From 1c8e11e117c28ef6b9591b489f2bbd38894ba811 Mon Sep 17 00:00:00 2001
From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Mon, 16 Jul 2012 12:31:28 +0300
Subject: iwlwifi: s/iwl_ucode_callback/iwl_req_fw_callback

This name emphasizes more the role of the function: the
callback called when the ASYNC call to request_firmware
completes.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/iwlwifi/iwl-drv.c | 9 +++++----
 drivers/net/wireless/iwlwifi/iwl-drv.h | 6 +++---
 2 files changed, 8 insertions(+), 7 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/iwlwifi/iwl-drv.c b/drivers/net/wireless/iwlwifi/iwl-drv.c
index cc41cfa..35a9d65 100644
--- a/drivers/net/wireless/iwlwifi/iwl-drv.c
+++ b/drivers/net/wireless/iwlwifi/iwl-drv.c
@@ -194,7 +194,8 @@ static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
 	return 0;
 }
 
-static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
+static void iwl_req_fw_callback(const struct firmware *ucode_raw,
+				void *context);
 
 #define UCODE_EXPERIMENTAL_INDEX	100
 #define UCODE_EXPERIMENTAL_TAG		"exp"
@@ -231,7 +232,7 @@ static int iwl_request_firmware(struct iwl_drv *drv, bool first)
 
 	return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
 				       drv->trans->dev,
-				       GFP_KERNEL, drv, iwl_ucode_callback);
+				       GFP_KERNEL, drv, iwl_req_fw_callback);
 }
 
 struct fw_img_parsing {
@@ -760,12 +761,12 @@ static int validate_sec_sizes(struct iwl_drv *drv,
 }
 
 /**
- * iwl_ucode_callback - callback when firmware was loaded
+ * iwl_req_fw_callback - callback when firmware was loaded
  *
  * If loaded successfully, copies the firmware into buffers
  * for the card to fetch (via DMA).
  */
-static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
+static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 {
 	struct iwl_drv *drv = context;
 	struct iwl_fw *fw = &drv->fw;
diff --git a/drivers/net/wireless/iwlwifi/iwl-drv.h b/drivers/net/wireless/iwlwifi/iwl-drv.h
index 2cbf137..285de5f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-drv.h
+++ b/drivers/net/wireless/iwlwifi/iwl-drv.h
@@ -90,9 +90,9 @@
  * 4) The bus specific component configures the bus
  * 5) The bus specific component calls to the drv bus agnostic part
  *    (iwl_drv_start)
- * 6) iwl_drv_start fetches the fw ASYNC, iwl_ucode_callback
- * 7) iwl_ucode_callback parses the fw file
- * 8) iwl_ucode_callback starts the wifi implementation to matches the fw
+ * 6) iwl_drv_start fetches the fw ASYNC, iwl_req_fw_callback
+ * 7) iwl_req_fw_callback parses the fw file
+ * 8) iwl_req_fw_callback starts the wifi implementation to matches the fw
  */
 
 struct iwl_drv;
-- 
cgit v1.1


From 273a5768211450a303c455ff111b77d7ae621973 Mon Sep 17 00:00:00 2001
From: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Date: Tue, 17 Jul 2012 13:05:03 -0700
Subject: iwlwifi: clean up properly when registration with mac80211 fails

If registration with mac80211 fails, stop the thermal
throttling and testmode work that were previously started.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/iwlwifi/dvm/main.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/wireless/iwlwifi/dvm/main.c b/drivers/net/wireless/iwlwifi/dvm/main.c
index 84d3db5..e8ffbe4 100644
--- a/drivers/net/wireless/iwlwifi/dvm/main.c
+++ b/drivers/net/wireless/iwlwifi/dvm/main.c
@@ -1473,6 +1473,9 @@ static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
 	return op_mode;
 
 out_destroy_workqueue:
+	iwl_tt_exit(priv);
+	iwl_testmode_free(priv);
+	iwl_cancel_deferred_work(priv);
 	destroy_workqueue(priv->workqueue);
 	priv->workqueue = NULL;
 	iwl_uninit_drv(priv);
-- 
cgit v1.1


From 9da987ac2b88b40c327ce08735b0d46057d180d7 Mon Sep 17 00:00:00 2001
From: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Date: Mon, 16 Jul 2012 18:43:56 -0700
Subject: iwlwifi: rework the iwlwifi debugfs structure

The generic part of the driver now creates all debugfs
directories. It creates a root directory directly in
the the root of the debugfs filesystem and within that
directories for each device, named after the device ID
of the devices iwlwifi is attached to.

In the cfg80211/mac80211 directory there's now a link
to the toplevel iwlwifi debugfs directory to make it
easier to find the debugfs files.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/iwlwifi/dvm/agn.h     |   9 +-
 drivers/net/wireless/iwlwifi/dvm/debugfs.c |  56 ++++++------
 drivers/net/wireless/iwlwifi/dvm/main.c    |  12 +--
 drivers/net/wireless/iwlwifi/iwl-drv.c     | 132 +++++++++++++++++++++++++----
 drivers/net/wireless/iwlwifi/iwl-op-mode.h |   3 +-
 drivers/net/wireless/iwlwifi/iwl-trans.h   |   2 +
 drivers/net/wireless/iwlwifi/pcie/drv.c    |   6 ++
 drivers/net/wireless/iwlwifi/pcie/trans.c  |   6 +-
 8 files changed, 166 insertions(+), 60 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/iwlwifi/dvm/agn.h b/drivers/net/wireless/iwlwifi/dvm/agn.h
index 9bb16bd..12762dc 100644
--- a/drivers/net/wireless/iwlwifi/dvm/agn.h
+++ b/drivers/net/wireless/iwlwifi/dvm/agn.h
@@ -485,16 +485,13 @@ static inline void iwl_dvm_set_pmi(struct iwl_priv *priv, bool state)
 }
 
 #ifdef CONFIG_IWLWIFI_DEBUGFS
-int iwl_dbgfs_register(struct iwl_priv *priv, const char *name);
-void iwl_dbgfs_unregister(struct iwl_priv *priv);
+int iwl_dbgfs_register(struct iwl_priv *priv, struct dentry *dbgfs_dir);
 #else
-static inline int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
+static inline int iwl_dbgfs_register(struct iwl_priv *priv,
+				     struct dentry *dbgfs_dir)
 {
 	return 0;
 }
-static inline void iwl_dbgfs_unregister(struct iwl_priv *priv)
-{
-}
 #endif /* CONFIG_IWLWIFI_DEBUGFS */
 
 #ifdef CONFIG_IWLWIFI_DEBUG
diff --git a/drivers/net/wireless/iwlwifi/dvm/debugfs.c b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
index 46782f1..ce826bc 100644
--- a/drivers/net/wireless/iwlwifi/dvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
@@ -2349,24 +2349,19 @@ DEBUGFS_READ_WRITE_FILE_OPS(calib_disabled);
  * Create the debugfs files and directories
  *
  */
-int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
+int iwl_dbgfs_register(struct iwl_priv *priv, struct dentry *dbgfs_dir)
 {
-	struct dentry *phyd = priv->hw->wiphy->debugfsdir;
-	struct dentry *dir_drv, *dir_data, *dir_rf, *dir_debug;
+	struct dentry *dir_data, *dir_rf, *dir_debug;
 
-	dir_drv = debugfs_create_dir(name, phyd);
-	if (!dir_drv)
-		return -ENOMEM;
-
-	priv->debugfs_dir = dir_drv;
+	priv->debugfs_dir = dbgfs_dir;
 
-	dir_data = debugfs_create_dir("data", dir_drv);
+	dir_data = debugfs_create_dir("data", dbgfs_dir);
 	if (!dir_data)
 		goto err;
-	dir_rf = debugfs_create_dir("rf", dir_drv);
+	dir_rf = debugfs_create_dir("rf", dbgfs_dir);
 	if (!dir_rf)
 		goto err;
-	dir_debug = debugfs_create_dir("debug", dir_drv);
+	dir_debug = debugfs_create_dir("debug", dbgfs_dir);
 	if (!dir_debug)
 		goto err;
 
@@ -2412,25 +2407,30 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
 	/* Calibrations disabled/enabled status*/
 	DEBUGFS_ADD_FILE(calib_disabled, dir_rf, S_IWUSR | S_IRUSR);
 
-	if (iwl_trans_dbgfs_register(priv->trans, dir_debug))
-		goto err;
+	/*
+	 * Create a symlink with mac80211. This is not very robust, as it does
+	 * not remove the symlink created. The implicit assumption is that
+	 * when the opmode exits, mac80211 will also exit, and will remove
+	 * this symlink as part of its cleanup.
+	 */
+	if (priv->mac80211_registered) {
+		char buf[100];
+		struct dentry *mac80211_dir, *dev_dir, *root_dir;
+
+		dev_dir = dbgfs_dir->d_parent;
+		root_dir = dev_dir->d_parent;
+		mac80211_dir = priv->hw->wiphy->debugfsdir;
+
+		snprintf(buf, 100, "../../%s/%s", root_dir->d_name.name,
+			 dev_dir->d_name.name);
+
+		if (!debugfs_create_symlink("iwlwifi", mac80211_dir, buf))
+			goto err;
+	}
+
 	return 0;
 
 err:
-	IWL_ERR(priv, "Can't create the debugfs directory\n");
-	iwl_dbgfs_unregister(priv);
+	IWL_ERR(priv, "failed to create the dvm debugfs entries\n");
 	return -ENOMEM;
 }
-
-/**
- * Remove the debugfs files and directories
- *
- */
-void iwl_dbgfs_unregister(struct iwl_priv *priv)
-{
-	if (!priv->debugfs_dir)
-		return;
-
-	debugfs_remove_recursive(priv->debugfs_dir);
-	priv->debugfs_dir = NULL;
-}
diff --git a/drivers/net/wireless/iwlwifi/dvm/main.c b/drivers/net/wireless/iwlwifi/dvm/main.c
index e8ffbe4..ab7b9ed 100644
--- a/drivers/net/wireless/iwlwifi/dvm/main.c
+++ b/drivers/net/wireless/iwlwifi/dvm/main.c
@@ -1222,7 +1222,8 @@ static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
 
 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
 						 const struct iwl_cfg *cfg,
-						 const struct iwl_fw *fw)
+						 const struct iwl_fw *fw,
+						 struct dentry *dbgfs_dir)
 {
 	struct iwl_priv *priv;
 	struct ieee80211_hw *hw;
@@ -1466,12 +1467,13 @@ static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
 	if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
 		goto out_destroy_workqueue;
 
-	if (iwl_dbgfs_register(priv, DRV_NAME))
-		IWL_ERR(priv,
-			"failed to create debugfs files. Ignoring error\n");
+	if (iwl_dbgfs_register(priv, dbgfs_dir))
+		goto out_mac80211_unregister;
 
 	return op_mode;
 
+out_mac80211_unregister:
+	iwlagn_mac_unregister(priv);
 out_destroy_workqueue:
 	iwl_tt_exit(priv);
 	iwl_testmode_free(priv);
@@ -1496,8 +1498,6 @@ static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
 
 	IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
 
-	iwl_dbgfs_unregister(priv);
-
 	iwl_testmode_free(priv);
 	iwlagn_mac_unregister(priv);
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-drv.c b/drivers/net/wireless/iwlwifi/iwl-drv.c
index 35a9d65..48d6d44 100644
--- a/drivers/net/wireless/iwlwifi/iwl-drv.c
+++ b/drivers/net/wireless/iwlwifi/iwl-drv.c
@@ -101,6 +101,10 @@ MODULE_VERSION(DRV_VERSION);
 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
 MODULE_LICENSE("GPL");
 
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+static struct dentry *iwl_dbgfs_root;
+#endif
+
 /**
  * struct iwl_drv - drv common data
  * @list: list of drv structures using this opmode
@@ -126,6 +130,12 @@ struct iwl_drv {
 	char firmware_name[25];         /* name of firmware file to load */
 
 	struct completion request_firmware_complete;
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	struct dentry *dbgfs_drv;
+	struct dentry *dbgfs_trans;
+	struct dentry *dbgfs_op_mode;
+#endif
 };
 
 #define DVM_OP_MODE	0
@@ -760,6 +770,50 @@ static int validate_sec_sizes(struct iwl_drv *drv,
 	return 0;
 }
 
+static struct iwl_op_mode *
+_iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
+{
+	const struct iwl_op_mode_ops *ops = op->ops;
+	struct dentry *dbgfs_dir = NULL;
+	struct iwl_op_mode *op_mode = NULL;
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	drv->dbgfs_op_mode = debugfs_create_dir(op->name,
+						drv->dbgfs_drv);
+	if (!drv->dbgfs_op_mode) {
+		IWL_ERR(drv,
+			"failed to create opmode debugfs directory\n");
+		return op_mode;
+	}
+	dbgfs_dir = drv->dbgfs_op_mode;
+#endif
+
+	op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	if (!op_mode) {
+		debugfs_remove_recursive(drv->dbgfs_op_mode);
+		drv->dbgfs_op_mode = NULL;
+	}
+#endif
+
+	return op_mode;
+}
+
+static void _iwl_op_mode_stop(struct iwl_drv *drv)
+{
+	/* op_mode can be NULL if its start failed */
+	if (drv->op_mode) {
+		iwl_op_mode_stop(drv->op_mode);
+		drv->op_mode = NULL;
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+		debugfs_remove_recursive(drv->dbgfs_op_mode);
+		drv->dbgfs_op_mode = NULL;
+#endif
+	}
+}
+
 /**
  * iwl_req_fw_callback - callback when firmware was loaded
  *
@@ -909,8 +963,7 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 	list_add_tail(&drv->list, &op->drv);
 
 	if (op->ops) {
-		const struct iwl_op_mode_ops *ops = op->ops;
-		drv->op_mode = ops->start(drv->trans, drv->cfg, &drv->fw);
+		drv->op_mode = _iwl_op_mode_start(drv, op);
 
 		if (!drv->op_mode) {
 			mutex_unlock(&iwlwifi_opmode_table_mtx);
@@ -970,24 +1023,51 @@ struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
 	init_completion(&drv->request_firmware_complete);
 	INIT_LIST_HEAD(&drv->list);
 
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	/* Create the device debugfs entries. */
+	drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
+					    iwl_dbgfs_root);
+
+	if (!drv->dbgfs_drv) {
+		IWL_ERR(drv, "failed to create debugfs directory\n");
+		goto err_free_drv;
+	}
+
+	/* Create transport layer debugfs dir */
+	drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
+
+	if (!drv->trans->dbgfs_dir) {
+		IWL_ERR(drv, "failed to create transport debugfs directory\n");
+		goto err_free_dbgfs;
+	}
+#endif
+
 	ret = iwl_request_firmware(drv, true);
 
 	if (ret) {
 		IWL_ERR(trans, "Couldn't request the fw\n");
-		kfree(drv);
-		drv = NULL;
+		goto err_fw;
 	}
 
 	return drv;
+
+err_fw:
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+err_free_dbgfs:
+	debugfs_remove_recursive(drv->dbgfs_drv);
+err_free_drv:
+#endif
+	kfree(drv);
+	drv = NULL;
+
+	return drv;
 }
 
 void iwl_drv_stop(struct iwl_drv *drv)
 {
 	wait_for_completion(&drv->request_firmware_complete);
 
-	/* op_mode can be NULL if its start failed */
-	if (drv->op_mode)
-		iwl_op_mode_stop(drv->op_mode);
+	_iwl_op_mode_stop(drv);
 
 	iwl_dealloc_ucode(drv);
 
@@ -1001,6 +1081,10 @@ void iwl_drv_stop(struct iwl_drv *drv)
 		list_del(&drv->list);
 	mutex_unlock(&iwlwifi_opmode_table_mtx);
 
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	debugfs_remove_recursive(drv->dbgfs_drv);
+#endif
+
 	kfree(drv);
 }
 
@@ -1023,15 +1107,18 @@ int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
 {
 	int i;
 	struct iwl_drv *drv;
+	struct iwlwifi_opmode_table *op;
 
 	mutex_lock(&iwlwifi_opmode_table_mtx);
 	for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
-		if (strcmp(iwlwifi_opmode_table[i].name, name))
+		op = &iwlwifi_opmode_table[i];
+		if (strcmp(op->name, name))
 			continue;
-		iwlwifi_opmode_table[i].ops = ops;
-		list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
-			drv->op_mode = ops->start(drv->trans, drv->cfg,
-						  &drv->fw);
+		op->ops = ops;
+		/* TODO: need to handle exceptional case */
+		list_for_each_entry(drv, &op->drv, list)
+			drv->op_mode = _iwl_op_mode_start(drv, op);
+
 		mutex_unlock(&iwlwifi_opmode_table_mtx);
 		return 0;
 	}
@@ -1052,12 +1139,9 @@ void iwl_opmode_deregister(const char *name)
 		iwlwifi_opmode_table[i].ops = NULL;
 
 		/* call the stop routine for all devices */
-		list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list) {
-			if (drv->op_mode) {
-				iwl_op_mode_stop(drv->op_mode);
-				drv->op_mode = NULL;
-			}
-		}
+		list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
+			_iwl_op_mode_stop(drv);
+
 		mutex_unlock(&iwlwifi_opmode_table_mtx);
 		return;
 	}
@@ -1077,6 +1161,14 @@ static int __init iwl_drv_init(void)
 	pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
 	pr_info(DRV_COPYRIGHT "\n");
 
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	/* Create the root of iwlwifi debugfs subsystem. */
+	iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
+
+	if (!iwl_dbgfs_root)
+		return -EFAULT;
+#endif
+
 	return iwl_pci_register_driver();
 }
 module_init(iwl_drv_init);
@@ -1084,6 +1176,10 @@ module_init(iwl_drv_init);
 static void __exit iwl_drv_exit(void)
 {
 	iwl_pci_unregister_driver();
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	debugfs_remove_recursive(iwl_dbgfs_root);
+#endif
 }
 module_exit(iwl_drv_exit);
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-op-mode.h b/drivers/net/wireless/iwlwifi/iwl-op-mode.h
index 64886f9..c8d9b95 100644
--- a/drivers/net/wireless/iwlwifi/iwl-op-mode.h
+++ b/drivers/net/wireless/iwlwifi/iwl-op-mode.h
@@ -134,7 +134,8 @@ struct iwl_cfg;
 struct iwl_op_mode_ops {
 	struct iwl_op_mode *(*start)(struct iwl_trans *trans,
 				     const struct iwl_cfg *cfg,
-				     const struct iwl_fw *fw);
+				     const struct iwl_fw *fw,
+				     struct dentry *dbgfs_dir);
 	void (*stop)(struct iwl_op_mode *op_mode);
 	int (*rx)(struct iwl_op_mode *op_mode, struct iwl_rx_cmd_buffer *rxb,
 		  struct iwl_device_cmd *cmd);
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index 92576a3..8ac72a6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -460,6 +460,8 @@ struct iwl_trans {
 	size_t dev_cmd_headroom;
 	char dev_cmd_pool_name[50];
 
+	struct dentry *dbgfs_dir;
+
 	/* pointer to trans specific struct */
 	/*Ensure that this pointer will always be aligned to sizeof pointer */
 	char trans_specific[0] __aligned(sizeof(void *));
diff --git a/drivers/net/wireless/iwlwifi/pcie/drv.c b/drivers/net/wireless/iwlwifi/pcie/drv.c
index f4c3500..89bfb43 100644
--- a/drivers/net/wireless/iwlwifi/pcie/drv.c
+++ b/drivers/net/wireless/iwlwifi/pcie/drv.c
@@ -282,8 +282,14 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (!trans_pcie->drv)
 		goto out_free_trans;
 
+	/* register transport layer debugfs here */
+	if (iwl_trans_dbgfs_register(iwl_trans, iwl_trans->dbgfs_dir))
+		goto out_free_drv;
+
 	return 0;
 
+out_free_drv:
+	iwl_drv_stop(trans_pcie->drv);
 out_free_trans:
 	iwl_trans_pcie_free(iwl_trans);
 	pci_set_drvdata(pdev, NULL);
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index 69bf615..0232628 100644
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -1769,7 +1769,7 @@ void iwl_dump_csr(struct iwl_trans *trans)
 #define DEBUGFS_ADD_FILE(name, parent, mode) do {			\
 	if (!debugfs_create_file(#name, mode, parent, trans,		\
 				 &iwl_dbgfs_##name##_ops))		\
-		return -ENOMEM;						\
+		goto err;						\
 } while (0)
 
 /* file operation */
@@ -2033,6 +2033,10 @@ static int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans,
 	DEBUGFS_ADD_FILE(fh_reg, dir, S_IRUSR);
 	DEBUGFS_ADD_FILE(fw_restart, dir, S_IWUSR);
 	return 0;
+
+err:
+	IWL_ERR(trans, "failed to create the trans debugfs entry\n");
+	return -ENOMEM;
 }
 #else
 static int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans,
-- 
cgit v1.1


From ebdfb7a144c53d0b8e771a738f058bc11f0e187f Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 18 Jul 2012 16:36:57 +0200
Subject: iwlwifi: fix aggregation check indentation

Align the code to inside the WARN_ON() as it should.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/iwlwifi/dvm/tx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/iwlwifi/dvm/tx.c b/drivers/net/wireless/iwlwifi/dvm/tx.c
index 5971a23..954ac34 100644
--- a/drivers/net/wireless/iwlwifi/dvm/tx.c
+++ b/drivers/net/wireless/iwlwifi/dvm/tx.c
@@ -431,7 +431,7 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 		 * only. Check this here.
 		 */
 		if (WARN_ONCE(tid_data->agg.state != IWL_AGG_ON &&
-		    tid_data->agg.state != IWL_AGG_OFF,
+			      tid_data->agg.state != IWL_AGG_OFF,
 		    "Tx while agg.state = %d", tid_data->agg.state))
 			goto drop_unlock_sta;
 
-- 
cgit v1.1


From 9679142291f51515bd1bf492535e8a12515558e9 Mon Sep 17 00:00:00 2001
From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Tue, 24 Jul 2012 01:58:32 +0300
Subject: iwlwifi: get the correct HCMD in the response handler

Until now, the response handler of a Host Command got the
exact same pointer that was also given to the DMA engine.
We almost never need to the Host Command that was sent while
handling its response, but when we do need it, we see that
the command has been modified.

This mystery has been elucidated. The FH (our DMA engine)
writes its meta data on the buffer in the DRAM. Of course it
copies the buffer to the NIC first. This was known to happen
for Tx command, but as a matter of fact, it happens to all
TFD brought by the FH which doesn't care much about what it
brings from DRAM to internal SRAM.

So copy the Host Command to yet another buffer so that we
can properly pass the buffer that was sent originally to the
fw. Do that only if it was request by the user since very
few flows need to get the HCMD sent in the response handler.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/iwlwifi/dvm/sta.c       |  2 +-
 drivers/net/wireless/iwlwifi/iwl-trans.h     | 10 ++++++++--
 drivers/net/wireless/iwlwifi/pcie/internal.h |  1 +
 drivers/net/wireless/iwlwifi/pcie/rx.c       | 16 +++++++++++++---
 drivers/net/wireless/iwlwifi/pcie/trans.c    |  5 +++--
 drivers/net/wireless/iwlwifi/pcie/tx.c       | 26 +++++++++++++++++++++-----
 6 files changed, 47 insertions(+), 13 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/iwlwifi/dvm/sta.c b/drivers/net/wireless/iwlwifi/dvm/sta.c
index b29b798..fe36a38 100644
--- a/drivers/net/wireless/iwlwifi/dvm/sta.c
+++ b/drivers/net/wireless/iwlwifi/dvm/sta.c
@@ -150,7 +150,7 @@ int iwl_send_add_sta(struct iwl_priv *priv,
 		       sta_id, sta->sta.addr, flags & CMD_ASYNC ?  "a" : "");
 
 	if (!(flags & CMD_ASYNC)) {
-		cmd.flags |= CMD_WANT_SKB;
+		cmd.flags |= CMD_WANT_SKB | CMD_WANT_HCMD;
 		might_sleep();
 	}
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index 8ac72a6..ff11542 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -184,14 +184,20 @@ struct iwl_rx_packet {
  * @CMD_SYNC: The caller will be stalled until the fw responds to the command
  * @CMD_ASYNC: Return right away and don't want for the response
  * @CMD_WANT_SKB: valid only with CMD_SYNC. The caller needs the buffer of the
- *	response.
+ *	response. The caller needs to call iwl_free_resp when done.
+ * @CMD_WANT_HCMD: The caller needs to get the HCMD that was sent in the
+ *	response handler. Chunks flagged by %IWL_HCMD_DFL_NOCOPY won't be
+ *	copied. The pointer passed to the response handler is in the transport
+ *	ownership and don't need to be freed by the op_mode. This also means
+ *	that the pointer is invalidated after the op_mode's handler returns.
  * @CMD_ON_DEMAND: This command is sent by the test mode pipe.
  */
 enum CMD_MODE {
 	CMD_SYNC = 0,
 	CMD_ASYNC = BIT(0),
 	CMD_WANT_SKB = BIT(1),
-	CMD_ON_DEMAND = BIT(2),
+	CMD_WANT_HCMD = BIT(2),
+	CMD_ON_DEMAND = BIT(3),
 };
 
 #define DEF_CMD_PAYLOAD_SIZE 320
diff --git a/drivers/net/wireless/iwlwifi/pcie/internal.h b/drivers/net/wireless/iwlwifi/pcie/internal.h
index d9694c5..3ef8d5a 100644
--- a/drivers/net/wireless/iwlwifi/pcie/internal.h
+++ b/drivers/net/wireless/iwlwifi/pcie/internal.h
@@ -184,6 +184,7 @@ struct iwl_queue {
 
 struct iwl_pcie_tx_queue_entry {
 	struct iwl_device_cmd *cmd;
+	struct iwl_device_cmd *copy_cmd;
 	struct sk_buff *skb;
 	struct iwl_cmd_meta meta;
 };
diff --git a/drivers/net/wireless/iwlwifi/pcie/rx.c b/drivers/net/wireless/iwlwifi/pcie/rx.c
index 39a6ca1..d80604a 100644
--- a/drivers/net/wireless/iwlwifi/pcie/rx.c
+++ b/drivers/net/wireless/iwlwifi/pcie/rx.c
@@ -421,13 +421,23 @@ static void iwl_rx_handle_rxbuf(struct iwl_trans *trans,
 		index = SEQ_TO_INDEX(sequence);
 		cmd_index = get_cmd_index(&txq->q, index);
 
-		if (reclaim)
-			cmd = txq->entries[cmd_index].cmd;
-		else
+		if (reclaim) {
+			struct iwl_pcie_tx_queue_entry *ent;
+			ent = &txq->entries[cmd_index];
+			cmd = ent->copy_cmd;
+			WARN_ON_ONCE(!cmd && ent->meta.flags & CMD_WANT_HCMD);
+		} else {
 			cmd = NULL;
+		}
 
 		err = iwl_op_mode_rx(trans->op_mode, &rxcb, cmd);
 
+		if (reclaim) {
+			/* The original command isn't needed any more */
+			kfree(txq->entries[cmd_index].copy_cmd);
+			txq->entries[cmd_index].copy_cmd = NULL;
+		}
+
 		/*
 		 * After here, we should always check rxcb._page_stolen,
 		 * if it is true then one of the handlers took the page.
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index 0232628..f981b73 100644
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -492,10 +492,11 @@ static void iwl_tx_queue_free(struct iwl_trans *trans, int txq_id)
 	iwl_tx_queue_unmap(trans, txq_id);
 
 	/* De-alloc array of command/tx buffers */
-
 	if (txq_id == trans_pcie->cmd_queue)
-		for (i = 0; i < txq->q.n_window; i++)
+		for (i = 0; i < txq->q.n_window; i++) {
 			kfree(txq->entries[i].cmd);
+			kfree(txq->entries[i].copy_cmd);
+		}
 
 	/* De-alloc circular buffer of TFDs */
 	if (txq->q.n_bd) {
diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c
index 6baf8de..392d2bc 100644
--- a/drivers/net/wireless/iwlwifi/pcie/tx.c
+++ b/drivers/net/wireless/iwlwifi/pcie/tx.c
@@ -521,7 +521,7 @@ static int iwl_enqueue_hcmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd)
 	u16 copy_size, cmd_size;
 	bool had_nocopy = false;
 	int i;
-	u8 *cmd_dest;
+	u32 cmd_pos;
 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
 	const void *trace_bufs[IWL_MAX_CMD_TFDS + 1] = {};
 	int trace_lens[IWL_MAX_CMD_TFDS + 1] = {};
@@ -584,15 +584,31 @@ static int iwl_enqueue_hcmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd)
 					 INDEX_TO_SEQ(q->write_ptr));
 
 	/* and copy the data that needs to be copied */
-
-	cmd_dest = out_cmd->payload;
+	cmd_pos = offsetof(struct iwl_device_cmd, payload);
 	for (i = 0; i < IWL_MAX_CMD_TFDS; i++) {
 		if (!cmd->len[i])
 			continue;
 		if (cmd->dataflags[i] & IWL_HCMD_DFL_NOCOPY)
 			break;
-		memcpy(cmd_dest, cmd->data[i], cmd->len[i]);
-		cmd_dest += cmd->len[i];
+		memcpy((u8 *)out_cmd + cmd_pos, cmd->data[i], cmd->len[i]);
+		cmd_pos += cmd->len[i];
+	}
+
+	WARN_ON_ONCE(txq->entries[idx].copy_cmd);
+
+	/*
+	 * since out_cmd will be the source address of the FH, it will write
+	 * the retry count there. So when the user needs to receivce the HCMD
+	 * that corresponds to the response in the response handler, it needs
+	 * to set CMD_WANT_HCMD.
+	 */
+	if (cmd->flags & CMD_WANT_HCMD) {
+		txq->entries[idx].copy_cmd =
+			kmemdup(out_cmd, cmd_pos, GFP_ATOMIC);
+		if (unlikely(!txq->entries[idx].copy_cmd)) {
+			idx = -ENOMEM;
+			goto out;
+		}
 	}
 
 	IWL_DEBUG_HC(trans,
-- 
cgit v1.1


From da0cabb8de68d9dba254810f65aa7146eb5f47b3 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 25 Jul 2012 17:06:47 +0200
Subject: iwlwifi: reduce max remain-on-channel duration

Due to the way the PAN parameters are set up, the
maximum duration isn't 1000 but much lower, set it
to 500 which is safe (somewhere around 550 might
be possible.)

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/iwlwifi/dvm/mac80211.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/iwlwifi/dvm/mac80211.c b/drivers/net/wireless/iwlwifi/dvm/mac80211.c
index a5f7bce..908ff253 100644
--- a/drivers/net/wireless/iwlwifi/dvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/dvm/mac80211.c
@@ -195,7 +195,7 @@ int iwlagn_mac_setup_register(struct iwl_priv *priv,
 			ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
 	}
 
-	hw->wiphy->max_remain_on_channel_duration = 1000;
+	hw->wiphy->max_remain_on_channel_duration = 500;
 
 	hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
 			    WIPHY_FLAG_DISABLE_BEACON_HINTS |
-- 
cgit v1.1


From 930e1915e73dd12c5e3a0e6a5a4349bdb9ab0ab7 Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Fri, 27 Jul 2012 10:11:32 +0300
Subject: wlcore: don't get the hlid from a queued skb

There was a bug hiding here since the hlid was sometimes inferred from
the sta, which might be invalid at this point.

Instead, propagate the hlid from the skb-queue where we got the skb
in the first place.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/ti/wlcore/tx.c | 46 +++++++++++++++++++++----------------
 1 file changed, 26 insertions(+), 20 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/ti/wlcore/tx.c b/drivers/net/wireless/ti/wlcore/tx.c
index f0081f7..6ec29df 100644
--- a/drivers/net/wireless/ti/wlcore/tx.c
+++ b/drivers/net/wireless/ti/wlcore/tx.c
@@ -344,13 +344,12 @@ static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 
 /* caller must hold wl->mutex */
 static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct wl12xx_vif *wlvif,
-				   struct sk_buff *skb, u32 buf_offset)
+				   struct sk_buff *skb, u32 buf_offset, u8 hlid)
 {
 	struct ieee80211_tx_info *info;
 	u32 extra = 0;
 	int ret = 0;
 	u32 total_len;
-	u8 hlid;
 	bool is_dummy;
 	bool is_gem = false;
 
@@ -359,9 +358,13 @@ static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 		return -EINVAL;
 	}
 
+	if (hlid == WL12XX_INVALID_LINK_ID) {
+		wl1271_error("invalid hlid. dropping skb 0x%p", skb);
+		return -EINVAL;
+	}
+
 	info = IEEE80211_SKB_CB(skb);
 
-	/* TODO: handle dummy packets on multi-vifs */
 	is_dummy = wl12xx_is_dummy_packet(wl, skb);
 
 	if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) &&
@@ -386,11 +389,6 @@ static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 
 		is_gem = (cipher == WL1271_CIPHER_SUITE_GEM);
 	}
-	hlid = wl12xx_tx_get_hlid(wl, wlvif, skb);
-	if (hlid == WL12XX_INVALID_LINK_ID) {
-		wl1271_error("invalid hlid. dropping skb 0x%p", skb);
-		return -EINVAL;
-	}
 
 	ret = wl1271_tx_allocate(wl, wlvif, skb, extra, buf_offset, hlid,
 				 is_gem);
@@ -517,7 +515,8 @@ static struct sk_buff *wl12xx_lnk_skb_dequeue(struct wl1271 *wl,
 }
 
 static struct sk_buff *wl12xx_vif_skb_dequeue(struct wl1271 *wl,
-					      struct wl12xx_vif *wlvif)
+					      struct wl12xx_vif *wlvif,
+					      u8 *hlid)
 {
 	struct sk_buff *skb = NULL;
 	int i, h, start_hlid;
@@ -544,10 +543,11 @@ static struct sk_buff *wl12xx_vif_skb_dequeue(struct wl1271 *wl,
 	if (!skb)
 		wlvif->last_tx_hlid = 0;
 
+	*hlid = wlvif->last_tx_hlid;
 	return skb;
 }
 
-static struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl)
+static struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl, u8 *hlid)
 {
 	unsigned long flags;
 	struct wl12xx_vif *wlvif = wl->last_wlvif;
@@ -556,7 +556,7 @@ static struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl)
 	/* continue from last wlvif (round robin) */
 	if (wlvif) {
 		wl12xx_for_each_wlvif_continue(wl, wlvif) {
-			skb = wl12xx_vif_skb_dequeue(wl, wlvif);
+			skb = wl12xx_vif_skb_dequeue(wl, wlvif, hlid);
 			if (skb) {
 				wl->last_wlvif = wlvif;
 				break;
@@ -565,13 +565,15 @@ static struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl)
 	}
 
 	/* dequeue from the system HLID before the restarting wlvif list */
-	if (!skb)
+	if (!skb) {
 		skb = wl12xx_lnk_skb_dequeue(wl, &wl->links[wl->system_hlid]);
+		*hlid = wl->system_hlid;
+	}
 
 	/* do a new pass over the wlvif list */
 	if (!skb) {
 		wl12xx_for_each_wlvif(wl, wlvif) {
-			skb = wl12xx_vif_skb_dequeue(wl, wlvif);
+			skb = wl12xx_vif_skb_dequeue(wl, wlvif, hlid);
 			if (skb) {
 				wl->last_wlvif = wlvif;
 				break;
@@ -591,6 +593,7 @@ static struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl)
 		int q;
 
 		skb = wl->dummy_packet;
+		*hlid = wl->system_hlid;
 		q = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
 		spin_lock_irqsave(&wl->wl_lock, flags);
 		WARN_ON_ONCE(wl->tx_queue_count[q] <= 0);
@@ -602,7 +605,7 @@ static struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl)
 }
 
 static void wl1271_skb_queue_head(struct wl1271 *wl, struct wl12xx_vif *wlvif,
-				  struct sk_buff *skb)
+				  struct sk_buff *skb, u8 hlid)
 {
 	unsigned long flags;
 	int q = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
@@ -610,7 +613,6 @@ static void wl1271_skb_queue_head(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 	if (wl12xx_is_dummy_packet(wl, skb)) {
 		set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
 	} else {
-		u8 hlid = wl12xx_tx_get_hlid(wl, wlvif, skb);
 		skb_queue_head(&wl->links[hlid].tx_queue[q], skb);
 
 		/* make sure we dequeue the same packet next time */
@@ -686,26 +688,30 @@ int wlcore_tx_work_locked(struct wl1271 *wl)
 	unsigned long active_hlids[BITS_TO_LONGS(WL12XX_MAX_LINKS)] = {0};
 	int ret = 0;
 	int bus_ret = 0;
+	u8 hlid;
 
 	if (unlikely(wl->state == WL1271_STATE_OFF))
 		return 0;
 
-	while ((skb = wl1271_skb_dequeue(wl))) {
+	while ((skb = wl1271_skb_dequeue(wl, &hlid))) {
 		struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 		bool has_data = false;
 
 		wlvif = NULL;
 		if (!wl12xx_is_dummy_packet(wl, skb) && info->control.vif)
 			wlvif = wl12xx_vif_to_data(info->control.vif);
+		else
+			hlid = wl->system_hlid;
 
 		has_data = wlvif && wl1271_tx_is_data_present(skb);
-		ret = wl1271_prepare_tx_frame(wl, wlvif, skb, buf_offset);
+		ret = wl1271_prepare_tx_frame(wl, wlvif, skb, buf_offset,
+					      hlid);
 		if (ret == -EAGAIN) {
 			/*
 			 * Aggregation buffer is full.
 			 * Flush buffer and try again.
 			 */
-			wl1271_skb_queue_head(wl, wlvif, skb);
+			wl1271_skb_queue_head(wl, wlvif, skb, hlid);
 
 			buf_offset = wlcore_hw_pre_pkt_send(wl, buf_offset,
 							    last_len);
@@ -722,7 +728,7 @@ int wlcore_tx_work_locked(struct wl1271 *wl)
 			 * Firmware buffer is full.
 			 * Queue back last skb, and stop aggregating.
 			 */
-			wl1271_skb_queue_head(wl, wlvif, skb);
+			wl1271_skb_queue_head(wl, wlvif, skb, hlid);
 			/* No work left, avoid scheduling redundant tx work */
 			set_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
 			goto out_ack;
@@ -732,7 +738,7 @@ int wlcore_tx_work_locked(struct wl1271 *wl)
 				 * fw still expects dummy packet,
 				 * so re-enqueue it
 				 */
-				wl1271_skb_queue_head(wl, wlvif, skb);
+				wl1271_skb_queue_head(wl, wlvif, skb, hlid);
 			else
 				ieee80211_free_txskb(wl->hw, skb);
 			goto out_ack;
-- 
cgit v1.1


From 2b2b64380785bdcaaa9a123e7e5829acc749c4ca Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Fri, 27 Jul 2012 10:11:33 +0300
Subject: wlcore: op_tx: pass sta explicitly when inferring frame hlid

avoid using the skb CB for getting the appropriate sta.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/ti/wlcore/main.c |  2 +-
 drivers/net/wireless/ti/wlcore/tx.c   | 15 ++++++---------
 drivers/net/wireless/ti/wlcore/tx.h   |  4 +---
 3 files changed, 8 insertions(+), 13 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 7254860..5efd591 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -1197,7 +1197,7 @@ static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 	mapping = skb_get_queue_mapping(skb);
 	q = wl1271_tx_get_queue(mapping);
 
-	hlid = wl12xx_tx_get_hlid(wl, wlvif, skb);
+	hlid = wl12xx_tx_get_hlid(wl, wlvif, skb, info->control.sta);
 
 	spin_lock_irqsave(&wl->wl_lock, flags);
 
diff --git a/drivers/net/wireless/ti/wlcore/tx.c b/drivers/net/wireless/ti/wlcore/tx.c
index 6ec29df..1a2f31c 100644
--- a/drivers/net/wireless/ti/wlcore/tx.c
+++ b/drivers/net/wireless/ti/wlcore/tx.c
@@ -130,16 +130,13 @@ bool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb)
 }
 EXPORT_SYMBOL(wl12xx_is_dummy_packet);
 
-u8 wl12xx_tx_get_hlid_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif,
-			 struct sk_buff *skb)
+static u8 wl12xx_tx_get_hlid_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif,
+				struct sk_buff *skb, struct ieee80211_sta *sta)
 {
-	struct ieee80211_tx_info *control = IEEE80211_SKB_CB(skb);
-
-	if (control->control.sta) {
+	if (sta) {
 		struct wl1271_station *wl_sta;
 
-		wl_sta = (struct wl1271_station *)
-				control->control.sta->drv_priv;
+		wl_sta = (struct wl1271_station *)sta->drv_priv;
 		return wl_sta->hlid;
 	} else {
 		struct ieee80211_hdr *hdr;
@@ -156,7 +153,7 @@ u8 wl12xx_tx_get_hlid_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 }
 
 u8 wl12xx_tx_get_hlid(struct wl1271 *wl, struct wl12xx_vif *wlvif,
-		      struct sk_buff *skb)
+		      struct sk_buff *skb, struct ieee80211_sta *sta)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 
@@ -164,7 +161,7 @@ u8 wl12xx_tx_get_hlid(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 		return wl->system_hlid;
 
 	if (wlvif->bss_type == BSS_TYPE_AP_BSS)
-		return wl12xx_tx_get_hlid_ap(wl, wlvif, skb);
+		return wl12xx_tx_get_hlid_ap(wl, wlvif, skb, sta);
 
 	if ((test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) ||
 	     test_bit(WLVIF_FLAG_IBSS_JOINED, &wlvif->flags)) &&
diff --git a/drivers/net/wireless/ti/wlcore/tx.h b/drivers/net/wireless/ti/wlcore/tx.h
index 1e939b0..349520d 100644
--- a/drivers/net/wireless/ti/wlcore/tx.h
+++ b/drivers/net/wireless/ti/wlcore/tx.h
@@ -243,10 +243,8 @@ u8 wlcore_rate_to_idx(struct wl1271 *wl, u8 rate, enum ieee80211_band band);
 u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set,
 				enum ieee80211_band rate_band);
 u32 wl1271_tx_min_rate_get(struct wl1271 *wl, u32 rate_set);
-u8 wl12xx_tx_get_hlid_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif,
-			 struct sk_buff *skb);
 u8 wl12xx_tx_get_hlid(struct wl1271 *wl, struct wl12xx_vif *wlvif,
-		      struct sk_buff *skb);
+		      struct sk_buff *skb, struct ieee80211_sta *sta);
 void wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid);
 void wl1271_handle_tx_low_watermark(struct wl1271 *wl);
 bool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb);
-- 
cgit v1.1


From 36323f817af0376c78612cfdab714b0feb05fea5 Mon Sep 17 00:00:00 2001
From: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Date: Mon, 23 Jul 2012 21:33:42 +0200
Subject: mac80211: move TX station pointer and restructure TX

Remove the control.sta pointer from ieee80211_tx_info to free up
sufficient space in the TX skb control buffer for the upcoming
Transmit Power Control (TPC).
Instead, the pointer is now on the stack in a new control struct
that is passed as a function parameter to the drivers' tx method.

Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: Alina Friedrichsen <x-alina@gmx.net>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[reworded commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/adm8211.c                     |  4 +++-
 drivers/net/wireless/at76c50x-usb.c                |  4 +++-
 drivers/net/wireless/ath/ath5k/mac80211-ops.c      |  3 ++-
 drivers/net/wireless/ath/ath9k/ath9k.h             |  1 +
 drivers/net/wireless/ath/ath9k/htc.h               |  1 +
 drivers/net/wireless/ath/ath9k/htc_drv_beacon.c    |  2 +-
 drivers/net/wireless/ath/ath9k/htc_drv_main.c      |  6 +++--
 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c      |  2 +-
 drivers/net/wireless/ath/ath9k/main.c              |  5 ++++-
 drivers/net/wireless/ath/ath9k/xmit.c              |  9 ++++----
 drivers/net/wireless/ath/carl9170/carl9170.h       |  4 +++-
 drivers/net/wireless/ath/carl9170/tx.c             | 16 ++++++-------
 drivers/net/wireless/b43/main.c                    |  3 ++-
 drivers/net/wireless/b43legacy/main.c              |  1 +
 .../net/wireless/brcm80211/brcmsmac/mac80211_if.c  |  6 +++--
 drivers/net/wireless/iwlegacy/3945-mac.c           | 12 ++++++----
 drivers/net/wireless/iwlegacy/4965-mac.c           | 26 +++++++++++++---------
 drivers/net/wireless/iwlegacy/4965.h               |  8 +++++--
 drivers/net/wireless/iwlwifi/dvm/agn.h             |  4 +++-
 drivers/net/wireless/iwlwifi/dvm/mac80211.c        |  6 +++--
 drivers/net/wireless/iwlwifi/dvm/tx.c              | 16 +++++++------
 drivers/net/wireless/libertas_tf/main.c            |  4 +++-
 drivers/net/wireless/mac80211_hwsim.c              |  8 ++++---
 drivers/net/wireless/mwl8k.c                       | 17 ++++++++------
 drivers/net/wireless/p54/lmac.h                    |  4 +++-
 drivers/net/wireless/p54/main.c                    |  2 +-
 drivers/net/wireless/p54/txrx.c                    | 15 ++++++++-----
 drivers/net/wireless/rt2x00/rt2x00.h               |  4 +++-
 drivers/net/wireless/rt2x00/rt2x00dev.c            |  2 +-
 drivers/net/wireless/rt2x00/rt2x00mac.c            |  4 +++-
 drivers/net/wireless/rt2x00/rt2x00queue.c          | 20 +++++++++--------
 drivers/net/wireless/rtl818x/rtl8180/dev.c         |  6 +++--
 drivers/net/wireless/rtl818x/rtl8187/dev.c         |  6 +++--
 drivers/net/wireless/rtlwifi/base.c                |  3 +--
 drivers/net/wireless/rtlwifi/core.c                |  8 ++++---
 drivers/net/wireless/rtlwifi/pci.c                 | 16 ++++++-------
 drivers/net/wireless/rtlwifi/rtl8192ce/trx.c       |  5 +++--
 drivers/net/wireless/rtlwifi/rtl8192ce/trx.h       |  1 +
 drivers/net/wireless/rtlwifi/rtl8192cu/trx.c       |  5 +++--
 drivers/net/wireless/rtlwifi/rtl8192cu/trx.h       |  4 +++-
 drivers/net/wireless/rtlwifi/rtl8192de/trx.c       |  5 +++--
 drivers/net/wireless/rtlwifi/rtl8192de/trx.h       |  1 +
 drivers/net/wireless/rtlwifi/rtl8192se/trx.c       |  5 +++--
 drivers/net/wireless/rtlwifi/rtl8192se/trx.h       |  1 +
 drivers/net/wireless/rtlwifi/usb.c                 | 15 ++++++++-----
 drivers/net/wireless/rtlwifi/wifi.h                | 13 +++++++----
 drivers/net/wireless/ti/wl1251/main.c              |  4 +++-
 drivers/net/wireless/ti/wlcore/main.c              |  6 +++--
 drivers/net/wireless/zd1211rw/zd_mac.c             |  6 +++--
 drivers/staging/winbond/wbusb.c                    |  4 +++-
 50 files changed, 210 insertions(+), 123 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/adm8211.c b/drivers/net/wireless/adm8211.c
index 689a71c..154a496 100644
--- a/drivers/net/wireless/adm8211.c
+++ b/drivers/net/wireless/adm8211.c
@@ -1661,7 +1661,9 @@ static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
 }
 
 /* Put adm8211_tx_hdr on skb and transmit */
-static void adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
+static void adm8211_tx(struct ieee80211_hw *dev,
+		       struct ieee80211_tx_control *control,
+		       struct sk_buff *skb)
 {
 	struct adm8211_tx_hdr *txhdr;
 	size_t payload_len, hdrlen;
diff --git a/drivers/net/wireless/at76c50x-usb.c b/drivers/net/wireless/at76c50x-usb.c
index efc162e..abb520d 100644
--- a/drivers/net/wireless/at76c50x-usb.c
+++ b/drivers/net/wireless/at76c50x-usb.c
@@ -1726,7 +1726,9 @@ static void at76_mac80211_tx_callback(struct urb *urb)
 	ieee80211_wake_queues(priv->hw);
 }
 
-static void at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void at76_mac80211_tx(struct ieee80211_hw *hw,
+			     struct ieee80211_tx_control *control,
+			     struct sk_buff *skb)
 {
 	struct at76_priv *priv = hw->priv;
 	struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
diff --git a/drivers/net/wireless/ath/ath5k/mac80211-ops.c b/drivers/net/wireless/ath/ath5k/mac80211-ops.c
index 260e7dc..934f04c 100644
--- a/drivers/net/wireless/ath/ath5k/mac80211-ops.c
+++ b/drivers/net/wireless/ath/ath5k/mac80211-ops.c
@@ -55,7 +55,8 @@
 \********************/
 
 static void
-ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+ath5k_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
+	 struct sk_buff *skb)
 {
 	struct ath5k_hw *ah = hw->priv;
 	u16 qnum = skb_get_queue_mapping(skb);
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index b09285c..7373e4b 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -280,6 +280,7 @@ struct ath_tx_control {
 	struct ath_txq *txq;
 	struct ath_node *an;
 	u8 paprd;
+	struct ieee80211_sta *sta;
 };
 
 #define ATH_TX_ERROR        0x01
diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
index 936e920..b30596f 100644
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -542,6 +542,7 @@ void ath9k_htc_stop_ani(struct ath9k_htc_priv *priv);
 
 int ath9k_tx_init(struct ath9k_htc_priv *priv);
 int ath9k_htc_tx_start(struct ath9k_htc_priv *priv,
+		       struct ieee80211_sta *sta,
 		       struct sk_buff *skb, u8 slot, bool is_cab);
 void ath9k_tx_cleanup(struct ath9k_htc_priv *priv);
 bool ath9k_htc_txq_setup(struct ath9k_htc_priv *priv, int subtype);
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
index 77d541f..f42d2eb 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
@@ -326,7 +326,7 @@ static void ath9k_htc_send_buffered(struct ath9k_htc_priv *priv,
 			goto next;
 		}
 
-		ret = ath9k_htc_tx_start(priv, skb, tx_slot, true);
+		ret = ath9k_htc_tx_start(priv, NULL, skb, tx_slot, true);
 		if (ret != 0) {
 			ath9k_htc_tx_clear_slot(priv, tx_slot);
 			dev_kfree_skb_any(skb);
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
index c785129..8a0ccf7 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -856,7 +856,9 @@ set_timer:
 /* mac80211 Callbacks */
 /**********************/
 
-static void ath9k_htc_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void ath9k_htc_tx(struct ieee80211_hw *hw,
+			 struct ieee80211_tx_control *control,
+			 struct sk_buff *skb)
 {
 	struct ieee80211_hdr *hdr;
 	struct ath9k_htc_priv *priv = hw->priv;
@@ -883,7 +885,7 @@ static void ath9k_htc_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 		goto fail_tx;
 	}
 
-	ret = ath9k_htc_tx_start(priv, skb, slot, false);
+	ret = ath9k_htc_tx_start(priv, control->sta, skb, slot, false);
 	if (ret != 0) {
 		ath_dbg(common, XMIT, "Tx failed\n");
 		goto clear_slot;
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
index 47e61d0..06cdcb7 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
@@ -333,12 +333,12 @@ static void ath9k_htc_tx_data(struct ath9k_htc_priv *priv,
 }
 
 int ath9k_htc_tx_start(struct ath9k_htc_priv *priv,
+		       struct ieee80211_sta *sta,
 		       struct sk_buff *skb,
 		       u8 slot, bool is_cab)
 {
 	struct ieee80211_hdr *hdr;
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
-	struct ieee80211_sta *sta = tx_info->control.sta;
 	struct ieee80211_vif *vif = tx_info->control.vif;
 	struct ath9k_htc_sta *ista;
 	struct ath9k_htc_vif *avp = NULL;
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 6049d8b..4d8dc9f 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -694,7 +694,9 @@ mutex_unlock:
 	return r;
 }
 
-static void ath9k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void ath9k_tx(struct ieee80211_hw *hw,
+		     struct ieee80211_tx_control *control,
+		     struct sk_buff *skb)
 {
 	struct ath_softc *sc = hw->priv;
 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
@@ -754,6 +756,7 @@ static void ath9k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 
 	memset(&txctl, 0, sizeof(struct ath_tx_control));
 	txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)];
+	txctl.sta = control->sta;
 
 	ath_dbg(common, XMIT, "transmitting packet, skb: %p\n", skb);
 
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 2c9da6b..ef91f6c 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1773,11 +1773,12 @@ static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq,
 	TX_STAT_INC(txq->axq_qnum, queued);
 }
 
-static void setup_frame_info(struct ieee80211_hw *hw, struct sk_buff *skb,
+static void setup_frame_info(struct ieee80211_hw *hw,
+			     struct ieee80211_sta *sta,
+			     struct sk_buff *skb,
 			     int framelen)
 {
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
-	struct ieee80211_sta *sta = tx_info->control.sta;
 	struct ieee80211_key_conf *hw_key = tx_info->control.hw_key;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 	const struct ieee80211_rate *rate;
@@ -1935,7 +1936,7 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-	struct ieee80211_sta *sta = info->control.sta;
+	struct ieee80211_sta *sta = txctl->sta;
 	struct ieee80211_vif *vif = info->control.vif;
 	struct ath_softc *sc = hw->priv;
 	struct ath_txq *txq = txctl->txq;
@@ -1979,7 +1980,7 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
 	    !ieee80211_is_data(hdr->frame_control))
 		info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
 
-	setup_frame_info(hw, skb, frmlen);
+	setup_frame_info(hw, sta, skb, frmlen);
 
 	/*
 	 * At this point, the vif, hw_key and sta pointers in the tx control
diff --git a/drivers/net/wireless/ath/carl9170/carl9170.h b/drivers/net/wireless/ath/carl9170/carl9170.h
index 376be11..8f0cbc3 100644
--- a/drivers/net/wireless/ath/carl9170/carl9170.h
+++ b/drivers/net/wireless/ath/carl9170/carl9170.h
@@ -577,7 +577,9 @@ void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
 void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
 
 /* TX */
-void carl9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
+void carl9170_op_tx(struct ieee80211_hw *hw,
+		    struct ieee80211_tx_control *control,
+		    struct sk_buff *skb);
 void carl9170_tx_janitor(struct work_struct *work);
 void carl9170_tx_process_status(struct ar9170 *ar,
 				const struct carl9170_rsp *cmd);
diff --git a/drivers/net/wireless/ath/carl9170/tx.c b/drivers/net/wireless/ath/carl9170/tx.c
index 6a86814..84377cf 100644
--- a/drivers/net/wireless/ath/carl9170/tx.c
+++ b/drivers/net/wireless/ath/carl9170/tx.c
@@ -867,14 +867,15 @@ static bool carl9170_tx_cts_check(struct ar9170 *ar,
 	return false;
 }
 
-static int carl9170_tx_prepare(struct ar9170 *ar, struct sk_buff *skb)
+static int carl9170_tx_prepare(struct ar9170 *ar,
+			       struct ieee80211_sta *sta,
+			       struct sk_buff *skb)
 {
 	struct ieee80211_hdr *hdr;
 	struct _carl9170_tx_superframe *txc;
 	struct carl9170_vif_info *cvif;
 	struct ieee80211_tx_info *info;
 	struct ieee80211_tx_rate *txrate;
-	struct ieee80211_sta *sta;
 	struct carl9170_tx_info *arinfo;
 	unsigned int hw_queue;
 	int i;
@@ -910,8 +911,6 @@ static int carl9170_tx_prepare(struct ar9170 *ar, struct sk_buff *skb)
 	else
 		cvif = NULL;
 
-	sta = info->control.sta;
-
 	txc = (void *)skb_push(skb, sizeof(*txc));
 	memset(txc, 0, sizeof(*txc));
 
@@ -1457,20 +1456,21 @@ err_unlock_rcu:
 	return false;
 }
 
-void carl9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+void carl9170_op_tx(struct ieee80211_hw *hw,
+		    struct ieee80211_tx_control *control,
+		    struct sk_buff *skb)
 {
 	struct ar9170 *ar = hw->priv;
 	struct ieee80211_tx_info *info;
-	struct ieee80211_sta *sta;
+	struct ieee80211_sta *sta = control->sta;
 	bool run;
 
 	if (unlikely(!IS_STARTED(ar)))
 		goto err_free;
 
 	info = IEEE80211_SKB_CB(skb);
-	sta = info->control.sta;
 
-	if (unlikely(carl9170_tx_prepare(ar, skb)))
+	if (unlikely(carl9170_tx_prepare(ar, sta, skb)))
 		goto err_free;
 
 	carl9170_tx_accounting(ar, skb);
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index b80352b..2ca4e88 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -3407,7 +3407,8 @@ static void b43_tx_work(struct work_struct *work)
 }
 
 static void b43_op_tx(struct ieee80211_hw *hw,
-		     struct sk_buff *skb)
+		      struct ieee80211_tx_control *control,
+		      struct sk_buff *skb)
 {
 	struct b43_wl *wl = hw_to_b43_wl(hw);
 
diff --git a/drivers/net/wireless/b43legacy/main.c b/drivers/net/wireless/b43legacy/main.c
index 8156135..74d4c20 100644
--- a/drivers/net/wireless/b43legacy/main.c
+++ b/drivers/net/wireless/b43legacy/main.c
@@ -2492,6 +2492,7 @@ static void b43legacy_tx_work(struct work_struct *work)
 }
 
 static void b43legacy_op_tx(struct ieee80211_hw *hw,
+			    struct ieee80211_tx_control *control,
 			    struct sk_buff *skb)
 {
 	struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
index 9e79d47..a7be68d 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
@@ -264,7 +264,9 @@ static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 	}
 }
 
-static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void brcms_ops_tx(struct ieee80211_hw *hw,
+			 struct ieee80211_tx_control *control,
+			 struct sk_buff *skb)
 {
 	struct brcms_info *wl = hw->priv;
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
@@ -276,7 +278,7 @@ static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 		goto done;
 	}
 	brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
-	tx_info->rate_driver_data[0] = tx_info->control.sta;
+	tx_info->rate_driver_data[0] = control->sta;
  done:
 	spin_unlock_bh(&wl->lock);
 }
diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c
index faec404..e252acb 100644
--- a/drivers/net/wireless/iwlegacy/3945-mac.c
+++ b/drivers/net/wireless/iwlegacy/3945-mac.c
@@ -460,7 +460,9 @@ il3945_build_tx_cmd_basic(struct il_priv *il, struct il_device_cmd *cmd,
  * start C_TX command process
  */
 static int
-il3945_tx_skb(struct il_priv *il, struct sk_buff *skb)
+il3945_tx_skb(struct il_priv *il,
+	      struct ieee80211_sta *sta,
+	      struct sk_buff *skb)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -512,7 +514,7 @@ il3945_tx_skb(struct il_priv *il, struct sk_buff *skb)
 	hdr_len = ieee80211_hdrlen(fc);
 
 	/* Find idx into station table for destination station */
-	sta_id = il_sta_id_or_broadcast(il, info->control.sta);
+	sta_id = il_sta_id_or_broadcast(il, sta);
 	if (sta_id == IL_INVALID_STATION) {
 		D_DROP("Dropping - INVALID STATION: %pM\n", hdr->addr1);
 		goto drop;
@@ -2859,7 +2861,9 @@ il3945_mac_stop(struct ieee80211_hw *hw)
 }
 
 static void
-il3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+il3945_mac_tx(struct ieee80211_hw *hw,
+	       struct ieee80211_tx_control *control,
+	       struct sk_buff *skb)
 {
 	struct il_priv *il = hw->priv;
 
@@ -2868,7 +2872,7 @@ il3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 	D_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
 	     ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
 
-	if (il3945_tx_skb(il, skb))
+	if (il3945_tx_skb(il, control->sta, skb))
 		dev_kfree_skb_any(skb);
 
 	D_MAC80211("leave\n");
diff --git a/drivers/net/wireless/iwlegacy/4965-mac.c b/drivers/net/wireless/iwlegacy/4965-mac.c
index 34f61a0..eac4dc8 100644
--- a/drivers/net/wireless/iwlegacy/4965-mac.c
+++ b/drivers/net/wireless/iwlegacy/4965-mac.c
@@ -1526,8 +1526,11 @@ il4965_tx_cmd_build_basic(struct il_priv *il, struct sk_buff *skb,
 }
 
 static void
-il4965_tx_cmd_build_rate(struct il_priv *il, struct il_tx_cmd *tx_cmd,
-			 struct ieee80211_tx_info *info, __le16 fc)
+il4965_tx_cmd_build_rate(struct il_priv *il,
+			 struct il_tx_cmd *tx_cmd,
+			 struct ieee80211_tx_info *info,
+			 struct ieee80211_sta *sta,
+			 __le16 fc)
 {
 	const u8 rts_retry_limit = 60;
 	u32 rate_flags;
@@ -1561,9 +1564,7 @@ il4965_tx_cmd_build_rate(struct il_priv *il, struct il_tx_cmd *tx_cmd,
 	rate_idx = info->control.rates[0].idx;
 	if ((info->control.rates[0].flags & IEEE80211_TX_RC_MCS) || rate_idx < 0
 	    || rate_idx > RATE_COUNT_LEGACY)
-		rate_idx =
-		    rate_lowest_index(&il->bands[info->band],
-				      info->control.sta);
+		rate_idx = rate_lowest_index(&il->bands[info->band], sta);
 	/* For 5 GHZ band, remap mac80211 rate indices into driver indices */
 	if (info->band == IEEE80211_BAND_5GHZ)
 		rate_idx += IL_FIRST_OFDM_RATE;
@@ -1630,11 +1631,12 @@ il4965_tx_cmd_build_hwcrypto(struct il_priv *il, struct ieee80211_tx_info *info,
  * start C_TX command process
  */
 int
-il4965_tx_skb(struct il_priv *il, struct sk_buff *skb)
+il4965_tx_skb(struct il_priv *il,
+	      struct ieee80211_sta *sta,
+	      struct sk_buff *skb)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-	struct ieee80211_sta *sta = info->control.sta;
 	struct il_station_priv *sta_priv = NULL;
 	struct il_tx_queue *txq;
 	struct il_queue *q;
@@ -1680,7 +1682,7 @@ il4965_tx_skb(struct il_priv *il, struct sk_buff *skb)
 		sta_id = il->hw_params.bcast_id;
 	else {
 		/* Find idx into station table for destination station */
-		sta_id = il_sta_id_or_broadcast(il, info->control.sta);
+		sta_id = il_sta_id_or_broadcast(il, sta);
 
 		if (sta_id == IL_INVALID_STATION) {
 			D_DROP("Dropping - INVALID STATION: %pM\n", hdr->addr1);
@@ -1786,7 +1788,7 @@ il4965_tx_skb(struct il_priv *il, struct sk_buff *skb)
 	/* TODO need this for burst mode later on */
 	il4965_tx_cmd_build_basic(il, skb, tx_cmd, info, hdr, sta_id);
 
-	il4965_tx_cmd_build_rate(il, tx_cmd, info, fc);
+	il4965_tx_cmd_build_rate(il, tx_cmd, info, sta, fc);
 
 	il_update_stats(il, true, fc, len);
 	/*
@@ -5828,7 +5830,9 @@ il4965_mac_stop(struct ieee80211_hw *hw)
 }
 
 void
-il4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+il4965_mac_tx(struct ieee80211_hw *hw,
+	      struct ieee80211_tx_control *control,
+	      struct sk_buff *skb)
 {
 	struct il_priv *il = hw->priv;
 
@@ -5837,7 +5841,7 @@ il4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 	D_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
 	     ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
 
-	if (il4965_tx_skb(il, skb))
+	if (il4965_tx_skb(il, control->sta, skb))
 		dev_kfree_skb_any(skb);
 
 	D_MACDUMP("leave\n");
diff --git a/drivers/net/wireless/iwlegacy/4965.h b/drivers/net/wireless/iwlegacy/4965.h
index 1db6776..2d092f3 100644
--- a/drivers/net/wireless/iwlegacy/4965.h
+++ b/drivers/net/wireless/iwlegacy/4965.h
@@ -78,7 +78,9 @@ int il4965_hw_txq_attach_buf_to_tfd(struct il_priv *il, struct il_tx_queue *txq,
 int il4965_hw_tx_queue_init(struct il_priv *il, struct il_tx_queue *txq);
 void il4965_hwrate_to_tx_control(struct il_priv *il, u32 rate_n_flags,
 				 struct ieee80211_tx_info *info);
-int il4965_tx_skb(struct il_priv *il, struct sk_buff *skb);
+int il4965_tx_skb(struct il_priv *il,
+		  struct ieee80211_sta *sta,
+		  struct sk_buff *skb);
 int il4965_tx_agg_start(struct il_priv *il, struct ieee80211_vif *vif,
 			struct ieee80211_sta *sta, u16 tid, u16 * ssn);
 int il4965_tx_agg_stop(struct il_priv *il, struct ieee80211_vif *vif,
@@ -163,7 +165,9 @@ void il4965_eeprom_release_semaphore(struct il_priv *il);
 int il4965_eeprom_check_version(struct il_priv *il);
 
 /* mac80211 handlers (for 4965) */
-void il4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
+void il4965_mac_tx(struct ieee80211_hw *hw,
+		   struct ieee80211_tx_control *control,
+		   struct sk_buff *skb);
 int il4965_mac_start(struct ieee80211_hw *hw);
 void il4965_mac_stop(struct ieee80211_hw *hw);
 void il4965_configure_filter(struct ieee80211_hw *hw,
diff --git a/drivers/net/wireless/iwlwifi/dvm/agn.h b/drivers/net/wireless/iwlwifi/dvm/agn.h
index 9bb16bd..f0b8c1f 100644
--- a/drivers/net/wireless/iwlwifi/dvm/agn.h
+++ b/drivers/net/wireless/iwlwifi/dvm/agn.h
@@ -201,7 +201,9 @@ void iwl_chswitch_done(struct iwl_priv *priv, bool is_success);
 
 
 /* tx */
-int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
+int iwlagn_tx_skb(struct iwl_priv *priv,
+		  struct ieee80211_sta *sta,
+		  struct sk_buff *skb);
 int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
 			struct ieee80211_sta *sta, u16 tid, u16 *ssn);
 int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif,
diff --git a/drivers/net/wireless/iwlwifi/dvm/mac80211.c b/drivers/net/wireless/iwlwifi/dvm/mac80211.c
index a5f7bce..e64af60 100644
--- a/drivers/net/wireless/iwlwifi/dvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/dvm/mac80211.c
@@ -511,14 +511,16 @@ static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled)
 }
 #endif
 
-static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void iwlagn_mac_tx(struct ieee80211_hw *hw,
+			  struct ieee80211_tx_control *control,
+			  struct sk_buff *skb)
 {
 	struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 
 	IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
 		     ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
 
-	if (iwlagn_tx_skb(priv, skb))
+	if (iwlagn_tx_skb(priv, control->sta, skb))
 		dev_kfree_skb_any(skb);
 }
 
diff --git a/drivers/net/wireless/iwlwifi/dvm/tx.c b/drivers/net/wireless/iwlwifi/dvm/tx.c
index 5971a23..d17799b 100644
--- a/drivers/net/wireless/iwlwifi/dvm/tx.c
+++ b/drivers/net/wireless/iwlwifi/dvm/tx.c
@@ -127,6 +127,7 @@ static void iwlagn_tx_cmd_build_basic(struct iwl_priv *priv,
 static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv,
 				     struct iwl_tx_cmd *tx_cmd,
 				     struct ieee80211_tx_info *info,
+				     struct ieee80211_sta *sta,
 				     __le16 fc)
 {
 	u32 rate_flags;
@@ -187,8 +188,7 @@ static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv,
 	if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS ||
 			(rate_idx < 0) || (rate_idx > IWL_RATE_COUNT_LEGACY))
 		rate_idx = rate_lowest_index(
-				&priv->eeprom_data->bands[info->band],
-				info->control.sta);
+				&priv->eeprom_data->bands[info->band], sta);
 	/* For 5 GHZ band, remap mac80211 rate indices into driver indices */
 	if (info->band == IEEE80211_BAND_5GHZ)
 		rate_idx += IWL_FIRST_OFDM_RATE;
@@ -291,7 +291,9 @@ static int iwl_sta_id_or_broadcast(struct iwl_rxon_context *context,
 /*
  * start REPLY_TX command process
  */
-int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
+int iwlagn_tx_skb(struct iwl_priv *priv,
+		  struct ieee80211_sta *sta,
+		  struct sk_buff *skb)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -345,7 +347,7 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 		sta_id = ctx->bcast_sta_id;
 	else {
 		/* Find index into station table for destination station */
-		sta_id = iwl_sta_id_or_broadcast(ctx, info->control.sta);
+		sta_id = iwl_sta_id_or_broadcast(ctx, sta);
 		if (sta_id == IWL_INVALID_STATION) {
 			IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
 				       hdr->addr1);
@@ -355,8 +357,8 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 
 	IWL_DEBUG_TX(priv, "station Id %d\n", sta_id);
 
-	if (info->control.sta)
-		sta_priv = (void *)info->control.sta->drv_priv;
+	if (sta)
+		sta_priv = (void *)sta->drv_priv;
 
 	if (sta_priv && sta_priv->asleep &&
 	    (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER)) {
@@ -397,7 +399,7 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	/* TODO need this for burst mode later on */
 	iwlagn_tx_cmd_build_basic(priv, skb, tx_cmd, info, hdr, sta_id);
 
-	iwlagn_tx_cmd_build_rate(priv, tx_cmd, info, fc);
+	iwlagn_tx_cmd_build_rate(priv, tx_cmd, info, sta, fc);
 
 	memset(&info->status, 0, sizeof(info->status));
 
diff --git a/drivers/net/wireless/libertas_tf/main.c b/drivers/net/wireless/libertas_tf/main.c
index a034572..70018562 100644
--- a/drivers/net/wireless/libertas_tf/main.c
+++ b/drivers/net/wireless/libertas_tf/main.c
@@ -227,7 +227,9 @@ static void lbtf_free_adapter(struct lbtf_private *priv)
 	lbtf_deb_leave(LBTF_DEB_MAIN);
 }
 
-static void lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void lbtf_op_tx(struct ieee80211_hw *hw,
+		       struct ieee80211_tx_control *control,
+		       struct sk_buff *skb)
 {
 	struct lbtf_private *priv = hw->priv;
 
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 643f968..ed1386a 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -709,7 +709,9 @@ static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 	return ack;
 }
 
-static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
+			      struct ieee80211_tx_control *control,
+			      struct sk_buff *skb)
 {
 	bool ack;
 	struct ieee80211_tx_info *txi;
@@ -741,8 +743,8 @@ static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 
 	if (txi->control.vif)
 		hwsim_check_magic(txi->control.vif);
-	if (txi->control.sta)
-		hwsim_check_sta_magic(txi->control.sta);
+	if (control->sta)
+		hwsim_check_sta_magic(control->sta);
 
 	ieee80211_tx_info_clear_status(txi);
 
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index 224e03a..5099e53 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -1830,12 +1830,14 @@ static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
 }
 
 static void
-mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
+mwl8k_txq_xmit(struct ieee80211_hw *hw,
+	       int index,
+	       struct ieee80211_sta *sta,
+	       struct sk_buff *skb)
 {
 	struct mwl8k_priv *priv = hw->priv;
 	struct ieee80211_tx_info *tx_info;
 	struct mwl8k_vif *mwl8k_vif;
-	struct ieee80211_sta *sta;
 	struct ieee80211_hdr *wh;
 	struct mwl8k_tx_queue *txq;
 	struct mwl8k_tx_desc *tx;
@@ -1867,7 +1869,6 @@ mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
 	wh = &((struct mwl8k_dma_data *)skb->data)->wh;
 
 	tx_info = IEEE80211_SKB_CB(skb);
-	sta = tx_info->control.sta;
 	mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
 
 	if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
@@ -2019,8 +2020,8 @@ mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
 	tx->pkt_phys_addr = cpu_to_le32(dma);
 	tx->pkt_len = cpu_to_le16(skb->len);
 	tx->rate_info = 0;
-	if (!priv->ap_fw && tx_info->control.sta != NULL)
-		tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
+	if (!priv->ap_fw && sta != NULL)
+		tx->peer_id = MWL8K_STA(sta)->peer_id;
 	else
 		tx->peer_id = 0;
 
@@ -4364,7 +4365,9 @@ static void mwl8k_rx_poll(unsigned long data)
 /*
  * Core driver operations.
  */
-static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void mwl8k_tx(struct ieee80211_hw *hw,
+		     struct ieee80211_tx_control *control,
+		     struct sk_buff *skb)
 {
 	struct mwl8k_priv *priv = hw->priv;
 	int index = skb_get_queue_mapping(skb);
@@ -4376,7 +4379,7 @@ static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 		return;
 	}
 
-	mwl8k_txq_xmit(hw, index, skb);
+	mwl8k_txq_xmit(hw, index, control->sta, skb);
 }
 
 static int mwl8k_start(struct ieee80211_hw *hw)
diff --git a/drivers/net/wireless/p54/lmac.h b/drivers/net/wireless/p54/lmac.h
index 3d8d622..de1d46b 100644
--- a/drivers/net/wireless/p54/lmac.h
+++ b/drivers/net/wireless/p54/lmac.h
@@ -526,7 +526,9 @@ int p54_init_leds(struct p54_common *priv);
 void p54_unregister_leds(struct p54_common *priv);
 
 /* xmit functions */
-void p54_tx_80211(struct ieee80211_hw *dev, struct sk_buff *skb);
+void p54_tx_80211(struct ieee80211_hw *dev,
+		  struct ieee80211_tx_control *control,
+		  struct sk_buff *skb);
 int p54_tx_cancel(struct p54_common *priv, __le32 req_id);
 void p54_tx(struct p54_common *priv, struct sk_buff *skb);
 
diff --git a/drivers/net/wireless/p54/main.c b/drivers/net/wireless/p54/main.c
index 7cffea7..5e91ad0 100644
--- a/drivers/net/wireless/p54/main.c
+++ b/drivers/net/wireless/p54/main.c
@@ -158,7 +158,7 @@ static int p54_beacon_update(struct p54_common *priv,
 	 * to cancel the old beacon template by hand, instead the firmware
 	 * will release the previous one through the feedback mechanism.
 	 */
-	p54_tx_80211(priv->hw, beacon);
+	p54_tx_80211(priv->hw, NULL, beacon);
 	priv->tsf_high32 = 0;
 	priv->tsf_low32 = 0;
 
diff --git a/drivers/net/wireless/p54/txrx.c b/drivers/net/wireless/p54/txrx.c
index f38786e..5861e13 100644
--- a/drivers/net/wireless/p54/txrx.c
+++ b/drivers/net/wireless/p54/txrx.c
@@ -676,8 +676,9 @@ int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
 EXPORT_SYMBOL_GPL(p54_rx);
 
 static void p54_tx_80211_header(struct p54_common *priv, struct sk_buff *skb,
-				struct ieee80211_tx_info *info, u8 *queue,
-				u32 *extra_len, u16 *flags, u16 *aid,
+				struct ieee80211_tx_info *info,
+				struct ieee80211_sta *sta,
+				u8 *queue, u32 *extra_len, u16 *flags, u16 *aid,
 				bool *burst_possible)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
@@ -746,8 +747,8 @@ static void p54_tx_80211_header(struct p54_common *priv, struct sk_buff *skb,
 			}
 		}
 
-		if (info->control.sta)
-			*aid = info->control.sta->aid;
+		if (sta)
+			*aid = sta->aid;
 		break;
 	}
 }
@@ -767,7 +768,9 @@ static u8 p54_convert_algo(u32 cipher)
 	}
 }
 
-void p54_tx_80211(struct ieee80211_hw *dev, struct sk_buff *skb)
+void p54_tx_80211(struct ieee80211_hw *dev,
+		  struct ieee80211_tx_control *control,
+		  struct sk_buff *skb)
 {
 	struct p54_common *priv = dev->priv;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -784,7 +787,7 @@ void p54_tx_80211(struct ieee80211_hw *dev, struct sk_buff *skb)
 	u8 nrates = 0, nremaining = 8;
 	bool burst_allowed = false;
 
-	p54_tx_80211_header(priv, skb, info, &queue, &extra_len,
+	p54_tx_80211_header(priv, skb, info, control->sta, &queue, &extra_len,
 			    &hdr_flags, &aid, &burst_allowed);
 
 	if (p54_tx_qos_accounting_alloc(priv, skb, queue)) {
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 8afb546..f991e8b 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -1287,7 +1287,9 @@ void rt2x00lib_rxdone(struct queue_entry *entry, gfp_t gfp);
 /*
  * mac80211 handlers.
  */
-void rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
+void rt2x00mac_tx(struct ieee80211_hw *hw,
+		  struct ieee80211_tx_control *control,
+		  struct sk_buff *skb);
 int rt2x00mac_start(struct ieee80211_hw *hw);
 void rt2x00mac_stop(struct ieee80211_hw *hw);
 int rt2x00mac_add_interface(struct ieee80211_hw *hw,
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index a6b88bd..a59048f 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -194,7 +194,7 @@ static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac,
 	 */
 	skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif);
 	while (skb) {
-		rt2x00mac_tx(rt2x00dev->hw, skb);
+		rt2x00mac_tx(rt2x00dev->hw, NULL, skb);
 		skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif);
 	}
 }
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index 4ff26c2..c3d0f2f 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -99,7 +99,9 @@ static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev,
 	return retval;
 }
 
-void rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+void rt2x00mac_tx(struct ieee80211_hw *hw,
+		  struct ieee80211_tx_control *control,
+		  struct sk_buff *skb)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index f7e74a0..e488b94 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -315,6 +315,7 @@ static void rt2x00queue_create_tx_descriptor_plcp(struct rt2x00_dev *rt2x00dev,
 static void rt2x00queue_create_tx_descriptor_ht(struct rt2x00_dev *rt2x00dev,
 						struct sk_buff *skb,
 						struct txentry_desc *txdesc,
+						struct ieee80211_sta *sta,
 						const struct rt2x00_rate *hwrate)
 {
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
@@ -322,11 +323,11 @@ static void rt2x00queue_create_tx_descriptor_ht(struct rt2x00_dev *rt2x00dev,
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 	struct rt2x00_sta *sta_priv = NULL;
 
-	if (tx_info->control.sta) {
+	if (sta) {
 		txdesc->u.ht.mpdu_density =
-		    tx_info->control.sta->ht_cap.ampdu_density;
+		    sta->ht_cap.ampdu_density;
 
-		sta_priv = sta_to_rt2x00_sta(tx_info->control.sta);
+		sta_priv = sta_to_rt2x00_sta(sta);
 		txdesc->u.ht.wcid = sta_priv->wcid;
 	}
 
@@ -341,8 +342,8 @@ static void rt2x00queue_create_tx_descriptor_ht(struct rt2x00_dev *rt2x00dev,
 		 * MIMO PS should be set to 1 for STA's using dynamic SM PS
 		 * when using more then one tx stream (>MCS7).
 		 */
-		if (tx_info->control.sta && txdesc->u.ht.mcs > 7 &&
-		    ((tx_info->control.sta->ht_cap.cap &
+		if (sta && txdesc->u.ht.mcs > 7 &&
+		    ((sta->ht_cap.cap &
 		      IEEE80211_HT_CAP_SM_PS) >>
 		     IEEE80211_HT_CAP_SM_PS_SHIFT) ==
 		    WLAN_HT_CAP_SM_PS_DYNAMIC)
@@ -409,7 +410,8 @@ static void rt2x00queue_create_tx_descriptor_ht(struct rt2x00_dev *rt2x00dev,
 
 static void rt2x00queue_create_tx_descriptor(struct rt2x00_dev *rt2x00dev,
 					     struct sk_buff *skb,
-					     struct txentry_desc *txdesc)
+					     struct txentry_desc *txdesc,
+					     struct ieee80211_sta *sta)
 {
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
@@ -503,7 +505,7 @@ static void rt2x00queue_create_tx_descriptor(struct rt2x00_dev *rt2x00dev,
 
 	if (test_bit(REQUIRE_HT_TX_DESC, &rt2x00dev->cap_flags))
 		rt2x00queue_create_tx_descriptor_ht(rt2x00dev, skb, txdesc,
-						    hwrate);
+						   sta, hwrate);
 	else
 		rt2x00queue_create_tx_descriptor_plcp(rt2x00dev, skb, txdesc,
 						      hwrate);
@@ -595,7 +597,7 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb,
 	 * after that we are free to use the skb->cb array
 	 * for our information.
 	 */
-	rt2x00queue_create_tx_descriptor(queue->rt2x00dev, skb, &txdesc);
+	rt2x00queue_create_tx_descriptor(queue->rt2x00dev, skb, &txdesc, NULL);
 
 	/*
 	 * All information is retrieved from the skb->cb array,
@@ -740,7 +742,7 @@ int rt2x00queue_update_beacon_locked(struct rt2x00_dev *rt2x00dev,
 	 * after that we are free to use the skb->cb array
 	 * for our information.
 	 */
-	rt2x00queue_create_tx_descriptor(rt2x00dev, intf->beacon->skb, &txdesc);
+	rt2x00queue_create_tx_descriptor(rt2x00dev, intf->beacon->skb, &txdesc, NULL);
 
 	/*
 	 * Fill in skb descriptor
diff --git a/drivers/net/wireless/rtl818x/rtl8180/dev.c b/drivers/net/wireless/rtl818x/rtl8180/dev.c
index aceaf68..021d83e 100644
--- a/drivers/net/wireless/rtl818x/rtl8180/dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8180/dev.c
@@ -244,7 +244,9 @@ static irqreturn_t rtl8180_interrupt(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static void rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
+static void rtl8180_tx(struct ieee80211_hw *dev,
+		       struct ieee80211_tx_control *control,
+		       struct sk_buff *skb)
 {
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
@@ -710,7 +712,7 @@ static void rtl8180_beacon_work(struct work_struct *work)
 	/* TODO: use actual beacon queue */
 	skb_set_queue_mapping(skb, 0);
 
-	rtl8180_tx(dev, skb);
+	rtl8180_tx(dev, NULL, skb);
 
 resched:
 	/*
diff --git a/drivers/net/wireless/rtl818x/rtl8187/dev.c b/drivers/net/wireless/rtl818x/rtl8187/dev.c
index 71a30b0..05d8ca0 100644
--- a/drivers/net/wireless/rtl818x/rtl8187/dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8187/dev.c
@@ -228,7 +228,9 @@ static void rtl8187_tx_cb(struct urb *urb)
 	}
 }
 
-static void rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
+static void rtl8187_tx(struct ieee80211_hw *dev,
+		       struct ieee80211_tx_control *control,
+		       struct sk_buff *skb)
 {
 	struct rtl8187_priv *priv = dev->priv;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -1076,7 +1078,7 @@ static void rtl8187_beacon_work(struct work_struct *work)
 	/* TODO: use actual beacon queue */
 	skb_set_queue_mapping(skb, 0);
 
-	rtl8187_tx(dev, skb);
+	rtl8187_tx(dev, NULL, skb);
 
 resched:
 	/*
diff --git a/drivers/net/wireless/rtlwifi/base.c b/drivers/net/wireless/rtlwifi/base.c
index 942e56b..59381fe 100644
--- a/drivers/net/wireless/rtlwifi/base.c
+++ b/drivers/net/wireless/rtlwifi/base.c
@@ -1341,9 +1341,8 @@ int rtl_send_smps_action(struct ieee80211_hw *hw,
 		rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
 
 		info->control.rates[0].idx = 0;
-		info->control.sta = sta;
 		info->band = hw->conf.channel->band;
-		rtlpriv->intf_ops->adapter_tx(hw, skb, &tcb_desc);
+		rtlpriv->intf_ops->adapter_tx(hw, sta, skb, &tcb_desc);
 	}
 err_free:
 	return 0;
diff --git a/drivers/net/wireless/rtlwifi/core.c b/drivers/net/wireless/rtlwifi/core.c
index a18ad2a..a7c0e52 100644
--- a/drivers/net/wireless/rtlwifi/core.c
+++ b/drivers/net/wireless/rtlwifi/core.c
@@ -124,7 +124,9 @@ static void rtl_op_stop(struct ieee80211_hw *hw)
 	mutex_unlock(&rtlpriv->locks.conf_mutex);
 }
 
-static void rtl_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void rtl_op_tx(struct ieee80211_hw *hw,
+		      struct ieee80211_tx_control *control,
+		      struct sk_buff *skb)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
@@ -138,8 +140,8 @@ static void rtl_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 	if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
 		goto err_free;
 
-	if (!rtlpriv->intf_ops->waitq_insert(hw, skb))
-		rtlpriv->intf_ops->adapter_tx(hw, skb, &tcb_desc);
+	if (!rtlpriv->intf_ops->waitq_insert(hw, control->sta, skb))
+		rtlpriv->intf_ops->adapter_tx(hw, control->sta, skb, &tcb_desc);
 
 	return;
 
diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
index 80f75d3..aad9d44 100644
--- a/drivers/net/wireless/rtlwifi/pci.c
+++ b/drivers/net/wireless/rtlwifi/pci.c
@@ -504,7 +504,7 @@ static void _rtl_pci_tx_chk_waitq(struct ieee80211_hw *hw)
 				_rtl_update_earlymode_info(hw, skb,
 							   &tcb_desc, tid);
 
-			rtlpriv->intf_ops->adapter_tx(hw, skb, &tcb_desc);
+			rtlpriv->intf_ops->adapter_tx(hw, NULL, skb, &tcb_desc);
 		}
 	}
 }
@@ -929,7 +929,7 @@ static void _rtl_pci_prepare_bcn_tasklet(struct ieee80211_hw *hw)
 	info = IEEE80211_SKB_CB(pskb);
 	pdesc = &ring->desc[0];
 	rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *) pdesc,
-		info, pskb, BEACON_QUEUE, &tcb_desc);
+		info, NULL, pskb, BEACON_QUEUE, &tcb_desc);
 
 	__skb_queue_tail(&ring->queue, pskb);
 
@@ -1305,11 +1305,10 @@ int rtl_pci_reset_trx_ring(struct ieee80211_hw *hw)
 }
 
 static bool rtl_pci_tx_chk_waitq_insert(struct ieee80211_hw *hw,
+					struct ieee80211_sta *sta,
 					struct sk_buff *skb)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
-	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-	struct ieee80211_sta *sta = info->control.sta;
 	struct rtl_sta_info *sta_entry = NULL;
 	u8 tid = rtl_get_tid(skb);
 
@@ -1337,13 +1336,14 @@ static bool rtl_pci_tx_chk_waitq_insert(struct ieee80211_hw *hw,
 	return true;
 }
 
-static int rtl_pci_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
-		struct rtl_tcb_desc *ptcb_desc)
+static int rtl_pci_tx(struct ieee80211_hw *hw,
+		      struct ieee80211_sta *sta,
+		      struct sk_buff *skb,
+		      struct rtl_tcb_desc *ptcb_desc)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_sta_info *sta_entry = NULL;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-	struct ieee80211_sta *sta = info->control.sta;
 	struct rtl8192_tx_ring *ring;
 	struct rtl_tx_desc *pdesc;
 	u8 idx;
@@ -1418,7 +1418,7 @@ static int rtl_pci_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
 		rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
 
 	rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc,
-			info, skb, hw_queue, ptcb_desc);
+			info, sta, skb, hw_queue, ptcb_desc);
 
 	__skb_queue_tail(&ring->queue, skb);
 
diff --git a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
index 52166640..390d6d4 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
@@ -596,7 +596,9 @@ bool rtl92ce_rx_query_desc(struct ieee80211_hw *hw,
 
 void rtl92ce_tx_fill_desc(struct ieee80211_hw *hw,
 			  struct ieee80211_hdr *hdr, u8 *pdesc_tx,
-			  struct ieee80211_tx_info *info, struct sk_buff *skb,
+			  struct ieee80211_tx_info *info,
+			  struct ieee80211_sta *sta,
+			  struct sk_buff *skb,
 			  u8 hw_queue, struct rtl_tcb_desc *tcb_desc)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
@@ -604,7 +606,6 @@ void rtl92ce_tx_fill_desc(struct ieee80211_hw *hw,
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 	bool defaultadapter = true;
-	struct ieee80211_sta *sta;
 	u8 *pdesc = pdesc_tx;
 	u16 seq_number;
 	__le16 fc = hdr->frame_control;
diff --git a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.h b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.h
index c4adb97..a7cdd51 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.h
+++ b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.h
@@ -713,6 +713,7 @@ struct rx_desc_92c {
 void rtl92ce_tx_fill_desc(struct ieee80211_hw *hw,
 			  struct ieee80211_hdr *hdr,
 			  u8 *pdesc, struct ieee80211_tx_info *info,
+			  struct ieee80211_sta *sta,
 			  struct sk_buff *skb, u8 hw_queue,
 			  struct rtl_tcb_desc *ptcb_desc);
 bool rtl92ce_rx_query_desc(struct ieee80211_hw *hw,
diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/trx.c b/drivers/net/wireless/rtlwifi/rtl8192cu/trx.c
index 2e6eb35..27863d7 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192cu/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192cu/trx.c
@@ -496,7 +496,9 @@ static void _rtl_tx_desc_checksum(u8 *txdesc)
 
 void rtl92cu_tx_fill_desc(struct ieee80211_hw *hw,
 			  struct ieee80211_hdr *hdr, u8 *pdesc_tx,
-			  struct ieee80211_tx_info *info, struct sk_buff *skb,
+			  struct ieee80211_tx_info *info,
+			  struct ieee80211_sta *sta,
+			  struct sk_buff *skb,
 			  u8 queue_index,
 			  struct rtl_tcb_desc *tcb_desc)
 {
@@ -504,7 +506,6 @@ void rtl92cu_tx_fill_desc(struct ieee80211_hw *hw,
 	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 	bool defaultadapter = true;
-	struct ieee80211_sta *sta = info->control.sta = info->control.sta;
 	u8 *qc = ieee80211_get_qos_ctl(hdr);
 	u8 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
 	u16 seq_number;
diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/trx.h b/drivers/net/wireless/rtlwifi/rtl8192cu/trx.h
index 332b06e..725c53a 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192cu/trx.h
+++ b/drivers/net/wireless/rtlwifi/rtl8192cu/trx.h
@@ -420,7 +420,9 @@ struct sk_buff *rtl8192c_tx_aggregate_hdl(struct ieee80211_hw *,
 					   struct sk_buff_head *);
 void rtl92cu_tx_fill_desc(struct ieee80211_hw *hw,
 			  struct ieee80211_hdr *hdr, u8 *pdesc_tx,
-			  struct ieee80211_tx_info *info, struct sk_buff *skb,
+			  struct ieee80211_tx_info *info,
+			  struct ieee80211_sta *sta,
+			  struct sk_buff *skb,
 			  u8 queue_index,
 			  struct rtl_tcb_desc *tcb_desc);
 void rtl92cu_fill_fake_txdesc(struct ieee80211_hw *hw, u8 * pDesc,
diff --git a/drivers/net/wireless/rtlwifi/rtl8192de/trx.c b/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
index f80690d..4686f34 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
@@ -551,7 +551,9 @@ static void _rtl92de_insert_emcontent(struct rtl_tcb_desc *ptcb_desc,
 
 void rtl92de_tx_fill_desc(struct ieee80211_hw *hw,
 			  struct ieee80211_hdr *hdr, u8 *pdesc_tx,
-			  struct ieee80211_tx_info *info, struct sk_buff *skb,
+			  struct ieee80211_tx_info *info,
+			  struct ieee80211_sta *sta,
+			  struct sk_buff *skb,
 			  u8 hw_queue, struct rtl_tcb_desc *ptcb_desc)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
@@ -559,7 +561,6 @@ void rtl92de_tx_fill_desc(struct ieee80211_hw *hw,
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
 	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
-	struct ieee80211_sta *sta = info->control.sta;
 	u8 *pdesc = pdesc_tx;
 	u16 seq_number;
 	__le16 fc = hdr->frame_control;
diff --git a/drivers/net/wireless/rtlwifi/rtl8192de/trx.h b/drivers/net/wireless/rtlwifi/rtl8192de/trx.h
index 057a524..c1b5dfb 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192de/trx.h
+++ b/drivers/net/wireless/rtlwifi/rtl8192de/trx.h
@@ -730,6 +730,7 @@ struct rx_desc_92d {
 void rtl92de_tx_fill_desc(struct ieee80211_hw *hw,
 			  struct ieee80211_hdr *hdr,
 			  u8 *pdesc, struct ieee80211_tx_info *info,
+			  struct ieee80211_sta *sta,
 			  struct sk_buff *skb, u8 hw_queue,
 			  struct rtl_tcb_desc *ptcb_desc);
 bool rtl92de_rx_query_desc(struct ieee80211_hw *hw,
diff --git a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
index 36d1cb3..28c53fb 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
@@ -591,14 +591,15 @@ bool rtl92se_rx_query_desc(struct ieee80211_hw *hw, struct rtl_stats *stats,
 
 void rtl92se_tx_fill_desc(struct ieee80211_hw *hw,
 		struct ieee80211_hdr *hdr, u8 *pdesc_tx,
-		struct ieee80211_tx_info *info, struct sk_buff *skb,
+		struct ieee80211_tx_info *info,
+		struct ieee80211_sta *sta,
+		struct sk_buff *skb,
 		u8 hw_queue, struct rtl_tcb_desc *ptcb_desc)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
-	struct ieee80211_sta *sta = info->control.sta;
 	u8 *pdesc = pdesc_tx;
 	u16 seq_number;
 	__le16 fc = hdr->frame_control;
diff --git a/drivers/net/wireless/rtlwifi/rtl8192se/trx.h b/drivers/net/wireless/rtlwifi/rtl8192se/trx.h
index 011e7b0..64dd66f 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192se/trx.h
+++ b/drivers/net/wireless/rtlwifi/rtl8192se/trx.h
@@ -31,6 +31,7 @@
 
 void rtl92se_tx_fill_desc(struct ieee80211_hw *hw, struct ieee80211_hdr *hdr,
 			  u8 *pdesc, struct ieee80211_tx_info *info,
+			  struct ieee80211_sta *sta,
 			  struct sk_buff *skb, u8 hw_queue,
 			  struct rtl_tcb_desc *ptcb_desc);
 void rtl92se_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc, bool firstseg,
diff --git a/drivers/net/wireless/rtlwifi/usb.c b/drivers/net/wireless/rtlwifi/usb.c
index aa970fc..9140469 100644
--- a/drivers/net/wireless/rtlwifi/usb.c
+++ b/drivers/net/wireless/rtlwifi/usb.c
@@ -848,8 +848,10 @@ static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
 	_rtl_submit_tx_urb(hw, _urb);
 }
 
-static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw, struct sk_buff *skb,
-			    u16 hw_queue)
+static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw,
+				   struct ieee80211_sta *sta,
+				   struct sk_buff *skb,
+				   u16 hw_queue)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
@@ -891,7 +893,7 @@ static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw, struct sk_buff *skb,
 		seq_number += 1;
 		seq_number <<= 4;
 	}
-	rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, info, skb,
+	rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, info, sta, skb,
 					hw_queue, &tcb_desc);
 	if (!ieee80211_has_morefrags(hdr->frame_control)) {
 		if (qc)
@@ -901,7 +903,9 @@ static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw, struct sk_buff *skb,
 		rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
 }
 
-static int rtl_usb_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
+static int rtl_usb_tx(struct ieee80211_hw *hw,
+		      struct ieee80211_sta *sta,
+		      struct sk_buff *skb,
 		      struct rtl_tcb_desc *dummy)
 {
 	struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
@@ -913,7 +917,7 @@ static int rtl_usb_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
 	if (unlikely(is_hal_stop(rtlhal)))
 		goto err_free;
 	hw_queue = rtlusb->usb_mq_to_hwq(fc, skb_get_queue_mapping(skb));
-	_rtl_usb_tx_preprocess(hw, skb, hw_queue);
+	_rtl_usb_tx_preprocess(hw, sta, skb, hw_queue);
 	_rtl_usb_transmit(hw, skb, hw_queue);
 	return NETDEV_TX_OK;
 
@@ -923,6 +927,7 @@ err_free:
 }
 
 static bool rtl_usb_tx_chk_waitq_insert(struct ieee80211_hw *hw,
+					struct ieee80211_sta *sta,
 					struct sk_buff *skb)
 {
 	return false;
diff --git a/drivers/net/wireless/rtlwifi/wifi.h b/drivers/net/wireless/rtlwifi/wifi.h
index cdaa21f..40153e7 100644
--- a/drivers/net/wireless/rtlwifi/wifi.h
+++ b/drivers/net/wireless/rtlwifi/wifi.h
@@ -122,7 +122,7 @@ enum rt_eeprom_type {
 	EEPROM_BOOT_EFUSE,
 };
 
-enum rtl_status {
+enum ttl_status {
 	RTL_STATUS_INTERFACE_START = 0,
 };
 
@@ -1418,6 +1418,7 @@ struct rtl_hal_ops {
 	void (*fill_tx_desc) (struct ieee80211_hw *hw,
 			      struct ieee80211_hdr *hdr, u8 *pdesc_tx,
 			      struct ieee80211_tx_info *info,
+			      struct ieee80211_sta *sta,
 			      struct sk_buff *skb, u8 hw_queue,
 			      struct rtl_tcb_desc *ptcb_desc);
 	void (*fill_fake_txdesc) (struct ieee80211_hw *hw, u8 *pDesc,
@@ -1475,11 +1476,15 @@ struct rtl_intf_ops {
 	int (*adapter_start) (struct ieee80211_hw *hw);
 	void (*adapter_stop) (struct ieee80211_hw *hw);
 
-	int (*adapter_tx) (struct ieee80211_hw *hw, struct sk_buff *skb,
-			struct rtl_tcb_desc *ptcb_desc);
+	int (*adapter_tx) (struct ieee80211_hw *hw,
+			   struct ieee80211_sta *sta,
+			   struct sk_buff *skb,
+			   struct rtl_tcb_desc *ptcb_desc);
 	void (*flush)(struct ieee80211_hw *hw, bool drop);
 	int (*reset_trx_ring) (struct ieee80211_hw *hw);
-	bool (*waitq_insert) (struct ieee80211_hw *hw, struct sk_buff *skb);
+	bool (*waitq_insert) (struct ieee80211_hw *hw,
+			      struct ieee80211_sta *sta,
+			      struct sk_buff *skb);
 
 	/*pci */
 	void (*disable_aspm) (struct ieee80211_hw *hw);
diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c
index 3118c42..441cbcc 100644
--- a/drivers/net/wireless/ti/wl1251/main.c
+++ b/drivers/net/wireless/ti/wl1251/main.c
@@ -354,7 +354,9 @@ out:
 	return ret;
 }
 
-static void wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void wl1251_op_tx(struct ieee80211_hw *hw,
+			 struct ieee80211_tx_control *control,
+			 struct sk_buff *skb)
 {
 	struct wl1251 *wl = hw->priv;
 	unsigned long flags;
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 5efd591..ff830cf 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -1181,7 +1181,9 @@ out:
 	return ret;
 }
 
-static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void wl1271_op_tx(struct ieee80211_hw *hw,
+			 struct ieee80211_tx_control *control,
+			 struct sk_buff *skb)
 {
 	struct wl1271 *wl = hw->priv;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -1197,7 +1199,7 @@ static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 	mapping = skb_get_queue_mapping(skb);
 	q = wl1271_tx_get_queue(mapping);
 
-	hlid = wl12xx_tx_get_hlid(wl, wlvif, skb, info->control.sta);
+	hlid = wl12xx_tx_get_hlid(wl, wlvif, skb, control->sta);
 
 	spin_lock_irqsave(&wl->wl_lock, flags);
 
diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
index c9e2660e..4598801 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -937,7 +937,9 @@ static int fill_ctrlset(struct zd_mac *mac,
  * control block of the skbuff will be initialized. If necessary the incoming
  * mac80211 queues will be stopped.
  */
-static void zd_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void zd_op_tx(struct ieee80211_hw *hw,
+		     struct ieee80211_tx_control *control,
+		     struct sk_buff *skb)
 {
 	struct zd_mac *mac = zd_hw_mac(hw);
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -1176,7 +1178,7 @@ static void zd_beacon_done(struct zd_mac *mac)
 		skb = ieee80211_get_buffered_bc(mac->hw, mac->vif);
 		if (!skb)
 			break;
-		zd_op_tx(mac->hw, skb);
+		zd_op_tx(mac->hw, NULL, skb);
 	}
 
 	/*
diff --git a/drivers/staging/winbond/wbusb.c b/drivers/staging/winbond/wbusb.c
index ef36054..b76d95e 100644
--- a/drivers/staging/winbond/wbusb.c
+++ b/drivers/staging/winbond/wbusb.c
@@ -119,7 +119,9 @@ static void wbsoft_configure_filter(struct ieee80211_hw *dev,
 	*total_flags = new_flags;
 }
 
-static void wbsoft_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
+static void wbsoft_tx(struct ieee80211_hw *dev,
+		      struct ieee80211_tx_control *control,
+		      struct sk_buff *skb)
 {
 	struct wbsoft_priv *priv = dev->priv;
 
-- 
cgit v1.1


From 1efa29cd414c68725e774d52b248c82d9be44767 Mon Sep 17 00:00:00 2001
From: "Eric W. Biederman" <ebiederm@xmission.com>
Date: Fri, 10 Feb 2012 14:01:03 -0800
Subject: userns: Make the airo wireless driver use kuids for proc uids and
 gids

Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: John W. Linville <linville@tuxdriver.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
 drivers/net/wireless/airo.c | 48 ++++++++++++++++++++++++++-------------------
 1 file changed, 28 insertions(+), 20 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
index f9f15bb..c586f78 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -232,8 +232,10 @@ static int adhoc;
 
 static int probe = 1;
 
+static kuid_t proc_kuid;
 static int proc_uid /* = 0 */;
 
+static kgid_t proc_kgid;
 static int proc_gid /* = 0 */;
 
 static int airo_perm = 0555;
@@ -4499,78 +4501,79 @@ struct proc_data {
 static int setup_proc_entry( struct net_device *dev,
 			     struct airo_info *apriv ) {
 	struct proc_dir_entry *entry;
+
 	/* First setup the device directory */
 	strcpy(apriv->proc_name,dev->name);
 	apriv->proc_entry = proc_mkdir_mode(apriv->proc_name, airo_perm,
 					    airo_entry);
 	if (!apriv->proc_entry)
 		goto fail;
-	apriv->proc_entry->uid = proc_uid;
-	apriv->proc_entry->gid = proc_gid;
+	apriv->proc_entry->uid = proc_kuid;
+	apriv->proc_entry->gid = proc_kgid;
 
 	/* Setup the StatsDelta */
 	entry = proc_create_data("StatsDelta", S_IRUGO & proc_perm,
 				 apriv->proc_entry, &proc_statsdelta_ops, dev);
 	if (!entry)
 		goto fail_stats_delta;
-	entry->uid = proc_uid;
-	entry->gid = proc_gid;
+	entry->uid = proc_kuid;
+	entry->gid = proc_kgid;
 
 	/* Setup the Stats */
 	entry = proc_create_data("Stats", S_IRUGO & proc_perm,
 				 apriv->proc_entry, &proc_stats_ops, dev);
 	if (!entry)
 		goto fail_stats;
-	entry->uid = proc_uid;
-	entry->gid = proc_gid;
+	entry->uid = proc_kuid;
+	entry->gid = proc_kgid;
 
 	/* Setup the Status */
 	entry = proc_create_data("Status", S_IRUGO & proc_perm,
 				 apriv->proc_entry, &proc_status_ops, dev);
 	if (!entry)
 		goto fail_status;
-	entry->uid = proc_uid;
-	entry->gid = proc_gid;
+	entry->uid = proc_kuid;
+	entry->gid = proc_kgid;
 
 	/* Setup the Config */
 	entry = proc_create_data("Config", proc_perm,
 				 apriv->proc_entry, &proc_config_ops, dev);
 	if (!entry)
 		goto fail_config;
-	entry->uid = proc_uid;
-	entry->gid = proc_gid;
+	entry->uid = proc_kuid;
+	entry->gid = proc_kgid;
 
 	/* Setup the SSID */
 	entry = proc_create_data("SSID", proc_perm,
 				 apriv->proc_entry, &proc_SSID_ops, dev);
 	if (!entry)
 		goto fail_ssid;
-	entry->uid = proc_uid;
-	entry->gid = proc_gid;
+	entry->uid = proc_kuid;
+	entry->gid = proc_kgid;
 
 	/* Setup the APList */
 	entry = proc_create_data("APList", proc_perm,
 				 apriv->proc_entry, &proc_APList_ops, dev);
 	if (!entry)
 		goto fail_aplist;
-	entry->uid = proc_uid;
-	entry->gid = proc_gid;
+	entry->uid = proc_kuid;
+	entry->gid = proc_kgid;
 
 	/* Setup the BSSList */
 	entry = proc_create_data("BSSList", proc_perm,
 				 apriv->proc_entry, &proc_BSSList_ops, dev);
 	if (!entry)
 		goto fail_bsslist;
-	entry->uid = proc_uid;
-	entry->gid = proc_gid;
+	entry->uid = proc_kuid;
+	entry->gid = proc_kgid;
 
 	/* Setup the WepKey */
 	entry = proc_create_data("WepKey", proc_perm,
 				 apriv->proc_entry, &proc_wepkey_ops, dev);
 	if (!entry)
 		goto fail_wepkey;
-	entry->uid = proc_uid;
-	entry->gid = proc_gid;
+	entry->uid = proc_kuid;
+	entry->gid = proc_kgid;
 
 	return 0;
 
@@ -5697,11 +5700,16 @@ static int __init airo_init_module( void )
 {
 	int i;
 
+	proc_kuid = make_kuid(&init_user_ns, proc_uid);
+	proc_kgid = make_kgid(&init_user_ns, proc_gid);
+	if (!uid_valid(proc_kuid) || !gid_valid(proc_kgid))
+		return -EINVAL;
+
 	airo_entry = proc_mkdir_mode("driver/aironet", airo_perm, NULL);
 
 	if (airo_entry) {
-		airo_entry->uid = proc_uid;
-		airo_entry->gid = proc_gid;
+		airo_entry->uid = proc_kuid;
+		airo_entry->gid = proc_kgid;
 	}
 
 	for (i = 0; i < 4 && io[i] && irq[i]; i++) {
-- 
cgit v1.1


From 0625c883bc4b3eba6f93f268cf67b5664244c0fe Mon Sep 17 00:00:00 2001
From: "Eric W. Biederman" <ebiederm@xmission.com>
Date: Tue, 7 Feb 2012 16:48:55 -0800
Subject: userns: Convert tun/tap to use kuid and kgid where appropriate

Cc: Maxim Krasnyansky <maxk@qualcomm.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
 drivers/net/tun.c | 46 ++++++++++++++++++++++++++++++++--------------
 1 file changed, 32 insertions(+), 14 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 926d4db..a9bd9f3 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -120,8 +120,8 @@ struct tun_sock;
 struct tun_struct {
 	struct tun_file		*tfile;
 	unsigned int 		flags;
-	uid_t			owner;
-	gid_t			group;
+	kuid_t			owner;
+	kgid_t			group;
 
 	struct net_device	*dev;
 	netdev_features_t	set_features;
@@ -1032,8 +1032,8 @@ static void tun_setup(struct net_device *dev)
 {
 	struct tun_struct *tun = netdev_priv(dev);
 
-	tun->owner = -1;
-	tun->group = -1;
+	tun->owner = INVALID_UID;
+	tun->group = INVALID_GID;
 
 	dev->ethtool_ops = &tun_ethtool_ops;
 	dev->destructor = tun_free_netdev;
@@ -1156,14 +1156,20 @@ static ssize_t tun_show_owner(struct device *dev, struct device_attribute *attr,
 			      char *buf)
 {
 	struct tun_struct *tun = netdev_priv(to_net_dev(dev));
-	return sprintf(buf, "%d\n", tun->owner);
+	return uid_valid(tun->owner)?
+		sprintf(buf, "%u\n",
+			from_kuid_munged(current_user_ns(), tun->owner)):
+		sprintf(buf, "-1\n");
 }
 
 static ssize_t tun_show_group(struct device *dev, struct device_attribute *attr,
 			      char *buf)
 {
 	struct tun_struct *tun = netdev_priv(to_net_dev(dev));
-	return sprintf(buf, "%d\n", tun->group);
+	return gid_valid(tun->group) ?
+		sprintf(buf, "%u\n",
+			from_kgid_munged(current_user_ns(), tun->group)):
+		sprintf(buf, "-1\n");
 }
 
 static DEVICE_ATTR(tun_flags, 0444, tun_show_flags, NULL);
@@ -1190,8 +1196,8 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
 		else
 			return -EINVAL;
 
-		if (((tun->owner != -1 && cred->euid != tun->owner) ||
-		     (tun->group != -1 && !in_egroup_p(tun->group))) &&
+		if (((uid_valid(tun->owner) && !uid_eq(cred->euid, tun->owner)) ||
+		     (gid_valid(tun->group) && !in_egroup_p(tun->group))) &&
 		    !capable(CAP_NET_ADMIN))
 			return -EPERM;
 		err = security_tun_dev_attach(tun->socket.sk);
@@ -1375,6 +1381,8 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
 	void __user* argp = (void __user*)arg;
 	struct sock_fprog fprog;
 	struct ifreq ifr;
+	kuid_t owner;
+	kgid_t group;
 	int sndbuf;
 	int vnet_hdr_sz;
 	int ret;
@@ -1448,16 +1456,26 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
 
 	case TUNSETOWNER:
 		/* Set owner of the device */
-		tun->owner = (uid_t) arg;
-
-		tun_debug(KERN_INFO, tun, "owner set to %d\n", tun->owner);
+		owner = make_kuid(current_user_ns(), arg);
+		if (!uid_valid(owner)) {
+			ret = -EINVAL;
+			break;
+		}
+		tun->owner = owner;
+		tun_debug(KERN_INFO, tun, "owner set to %d\n",
+			  from_kuid(&init_user_ns, tun->owner));
 		break;
 
 	case TUNSETGROUP:
 		/* Set group of the device */
-		tun->group= (gid_t) arg;
-
-		tun_debug(KERN_INFO, tun, "group set to %d\n", tun->group);
+		group = make_kgid(current_user_ns(), arg);
+		if (!gid_valid(group)) {
+			ret = -EINVAL;
+			break;
+		}
+		tun->group = group;
+		tun_debug(KERN_INFO, tun, "group set to %d\n",
+			  from_kgid(&init_user_ns, tun->group));
 		break;
 
 	case TUNSETLINK:
-- 
cgit v1.1


From f0e0e9bba5eed2086f6001be14f21566a49bed10 Mon Sep 17 00:00:00 2001
From: Fengguang Wu <fengguang.wu@intel.com>
Date: Mon, 30 Jul 2012 13:19:07 -0700
Subject: tcm_vhost: Fix incorrect IS_ERR() usage in vhost_scsi_map_iov_to_sgl

Fix up a new coccinelle warnings reported by Fengguang Wu + Intel
0-DAY kernel build testing backend:

drivers/vhost/tcm_vhost.c:537:23-29: ERROR: allocation function on line
533 returns NULL not ERR_PTR on failure

vim +537 drivers/vhost/tcm_vhost.c
   534          if (!sg)
   535                  return -ENOMEM;
   536          pr_debug("%s sg %p sgl_count %u is_err %ld\n", __func__,
 > 537                 sg, sgl_count, IS_ERR(sg));
   538          sg_init_table(sg, sgl_count);
   539
   540          tv_cmd->tvc_sgl = sg;

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
 drivers/vhost/tcm_vhost.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c
index fb36654..481af88 100644
--- a/drivers/vhost/tcm_vhost.c
+++ b/drivers/vhost/tcm_vhost.c
@@ -533,8 +533,8 @@ static int vhost_scsi_map_iov_to_sgl(struct tcm_vhost_cmd *tv_cmd,
 	sg = kmalloc(sizeof(tv_cmd->tvc_sgl[0]) * sgl_count, GFP_ATOMIC);
 	if (!sg)
 		return -ENOMEM;
-	pr_debug("%s sg %p sgl_count %u is_err %ld\n", __func__,
-	       sg, sgl_count, IS_ERR(sg));
+	pr_debug("%s sg %p sgl_count %u is_err %d\n", __func__,
+	       sg, sgl_count, !sg);
 	sg_init_table(sg, sgl_count);
 
 	tv_cmd->tvc_sgl = sg;
-- 
cgit v1.1


From 101998f6fcd680ed12d85633b81504feb1cb0667 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Mon, 30 Jul 2012 13:30:00 -0700
Subject: tcm_vhost: Post-merge review changes requested by MST

This patch contains the post RFC-v5 (post-merge) changes, this includes:

- Add locking comment
- Move vhost_scsi_complete_cmd ahead of TFO callbacks in order to
  drop forward declarations
- Drop extra '!= NULL' usage in vhost_scsi_complete_cmd_work()
- Change vhost_scsi_*_handle_kick() to use pr_debug
- Fix possible race in vhost_scsi_set_endpoint() for vs->vs_tpg checking
  + assignment.
- Convert tv_tpg->tpg_vhost_count + ->tv_tpg_port_count from atomic_t ->
  int, and make sure reference is protected by ->tv_tpg_mutex.
- Drop unnecessary vhost_scsi->vhost_ref_cnt
- Add 'err:' label for exception path in vhost_scsi_clear_endpoint()
- Add enum for VQ numbers, add usage in vhost_scsi_open()
- Add vhost_scsi_flush() + vhost_scsi_flush_vq() following
  drivers/vhost/net.c
- Add smp_wmb() + vhost_scsi_flush() call during vhost_scsi_set_features()
- Drop unnecessary copy_from_user() usage with GET_ABI_VERSION ioctl
- Add missing vhost_scsi_compat_ioctl() caller for vhost_scsi_fops
- Fix function parameter definition first line to follow existing
  vhost code style
- Change 'vHost' usage -> 'vhost' in handful of locations
- Change -EPERM -> -EBUSY usage for two failures in tcm_vhost_drop_nexus()
- Add comment for tcm_vhost_workqueue in tcm_vhost_init()
- Make GET_ABI_VERSION return 'int' + add comment in tcm_vhost.h

Reported-by: Michael S. Tsirkin <mst@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>
Cc: Zhi Yong Wu <wuzhy@cn.ibm.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
 drivers/vhost/tcm_vhost.c | 195 +++++++++++++++++++++++++---------------------
 drivers/vhost/tcm_vhost.h |   9 ++-
 2 files changed, 111 insertions(+), 93 deletions(-)

(limited to 'drivers')

diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c
index 481af88..74b2eda 100644
--- a/drivers/vhost/tcm_vhost.c
+++ b/drivers/vhost/tcm_vhost.c
@@ -53,9 +53,14 @@
 #include "vhost.h"
 #include "tcm_vhost.h"
 
+enum {
+	VHOST_SCSI_VQ_CTL = 0,
+	VHOST_SCSI_VQ_EVT = 1,
+	VHOST_SCSI_VQ_IO = 2,
+};
+
 struct vhost_scsi {
-	atomic_t vhost_ref_cnt;
-	struct tcm_vhost_tpg *vs_tpg;
+	struct tcm_vhost_tpg *vs_tpg;	/* Protected by vhost_scsi->dev.mutex */
 	struct vhost_dev dev;
 	struct vhost_virtqueue vqs[3];
 
@@ -131,8 +136,7 @@ static u32 tcm_vhost_get_default_depth(struct se_portal_group *se_tpg)
 	return 1;
 }
 
-static u32 tcm_vhost_get_pr_transport_id(
-	struct se_portal_group *se_tpg,
+static u32 tcm_vhost_get_pr_transport_id(struct se_portal_group *se_tpg,
 	struct se_node_acl *se_nacl,
 	struct t10_pr_registration *pr_reg,
 	int *format_code,
@@ -162,8 +166,7 @@ static u32 tcm_vhost_get_pr_transport_id(
 			format_code, buf);
 }
 
-static u32 tcm_vhost_get_pr_transport_id_len(
-	struct se_portal_group *se_tpg,
+static u32 tcm_vhost_get_pr_transport_id_len(struct se_portal_group *se_tpg,
 	struct se_node_acl *se_nacl,
 	struct t10_pr_registration *pr_reg,
 	int *format_code)
@@ -192,8 +195,7 @@ static u32 tcm_vhost_get_pr_transport_id_len(
 			format_code);
 }
 
-static char *tcm_vhost_parse_pr_out_transport_id(
-	struct se_portal_group *se_tpg,
+static char *tcm_vhost_parse_pr_out_transport_id(struct se_portal_group *se_tpg,
 	const char *buf,
 	u32 *out_tid_len,
 	char **port_nexus_ptr)
@@ -236,8 +238,7 @@ static struct se_node_acl *tcm_vhost_alloc_fabric_acl(
 	return &nacl->se_node_acl;
 }
 
-static void tcm_vhost_release_fabric_acl(
-	struct se_portal_group *se_tpg,
+static void tcm_vhost_release_fabric_acl(struct se_portal_group *se_tpg,
 	struct se_node_acl *se_nacl)
 {
 	struct tcm_vhost_nacl *nacl = container_of(se_nacl,
@@ -297,7 +298,16 @@ static int tcm_vhost_get_cmd_state(struct se_cmd *se_cmd)
 	return 0;
 }
 
-static void vhost_scsi_complete_cmd(struct tcm_vhost_cmd *);
+static void vhost_scsi_complete_cmd(struct tcm_vhost_cmd *tv_cmd)
+{
+	struct vhost_scsi *vs = tv_cmd->tvc_vhost;
+
+	spin_lock_bh(&vs->vs_completion_lock);
+	list_add_tail(&tv_cmd->tvc_completion_list, &vs->vs_completion_list);
+	spin_unlock_bh(&vs->vs_completion_lock);
+
+	vhost_work_queue(&vs->dev, &vs->vs_completion_work);
+}
 
 static int tcm_vhost_queue_data_in(struct se_cmd *se_cmd)
 {
@@ -381,7 +391,7 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)
 					vs_completion_work);
 	struct tcm_vhost_cmd *tv_cmd;
 
-	while ((tv_cmd = vhost_scsi_get_cmd_from_completion(vs)) != NULL) {
+	while ((tv_cmd = vhost_scsi_get_cmd_from_completion(vs))) {
 		struct virtio_scsi_cmd_resp v_rsp;
 		struct se_cmd *se_cmd = &tv_cmd->tvc_se_cmd;
 		int ret;
@@ -408,19 +418,6 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)
 	vhost_signal(&vs->dev, &vs->vqs[2]);
 }
 
-static void vhost_scsi_complete_cmd(struct tcm_vhost_cmd *tv_cmd)
-{
-	struct vhost_scsi *vs = tv_cmd->tvc_vhost;
-
-	pr_debug("%s tv_cmd %p\n", __func__, tv_cmd);
-
-	spin_lock_bh(&vs->vs_completion_lock);
-	list_add_tail(&tv_cmd->tvc_completion_list, &vs->vs_completion_list);
-	spin_unlock_bh(&vs->vs_completion_lock);
-
-	vhost_work_queue(&vs->dev, &vs->vs_completion_work);
-}
-
 static struct tcm_vhost_cmd *vhost_scsi_allocate_cmd(
 	struct tcm_vhost_tpg *tv_tpg,
 	struct virtio_scsi_cmd_req *v_req,
@@ -787,12 +784,12 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs)
 
 static void vhost_scsi_ctl_handle_kick(struct vhost_work *work)
 {
-	pr_err("%s: The handling func for control queue.\n", __func__);
+	pr_debug("%s: The handling func for control queue.\n", __func__);
 }
 
 static void vhost_scsi_evt_handle_kick(struct vhost_work *work)
 {
-	pr_err("%s: The handling func for event queue.\n", __func__);
+	pr_debug("%s: The handling func for event queue.\n", __func__);
 }
 
 static void vhost_scsi_handle_kick(struct vhost_work *work)
@@ -825,11 +822,6 @@ static int vhost_scsi_set_endpoint(
 			return -EFAULT;
 		}
 	}
-
-	if (vs->vs_tpg) {
-		mutex_unlock(&vs->dev.mutex);
-		return -EEXIST;
-	}
 	mutex_unlock(&vs->dev.mutex);
 
 	mutex_lock(&tcm_vhost_mutex);
@@ -839,7 +831,7 @@ static int vhost_scsi_set_endpoint(
 			mutex_unlock(&tv_tpg->tv_tpg_mutex);
 			continue;
 		}
-		if (atomic_read(&tv_tpg->tv_tpg_vhost_count)) {
+		if (tv_tpg->tv_tpg_vhost_count != 0) {
 			mutex_unlock(&tv_tpg->tv_tpg_mutex);
 			continue;
 		}
@@ -847,14 +839,20 @@ static int vhost_scsi_set_endpoint(
 
 		if (!strcmp(tv_tport->tport_name, t->vhost_wwpn) &&
 		    (tv_tpg->tport_tpgt == t->vhost_tpgt)) {
-			atomic_inc(&tv_tpg->tv_tpg_vhost_count);
-			smp_mb__after_atomic_inc();
+			tv_tpg->tv_tpg_vhost_count++;
 			mutex_unlock(&tv_tpg->tv_tpg_mutex);
 			mutex_unlock(&tcm_vhost_mutex);
 
 			mutex_lock(&vs->dev.mutex);
+			if (vs->vs_tpg) {
+				mutex_unlock(&vs->dev.mutex);
+				mutex_lock(&tv_tpg->tv_tpg_mutex);
+				tv_tpg->tv_tpg_vhost_count--;
+				mutex_unlock(&tv_tpg->tv_tpg_mutex);
+				return -EEXIST;
+			}
+
 			vs->vs_tpg = tv_tpg;
-			atomic_inc(&vs->vhost_ref_cnt);
 			smp_mb__after_atomic_inc();
 			mutex_unlock(&vs->dev.mutex);
 			return 0;
@@ -871,38 +869,42 @@ static int vhost_scsi_clear_endpoint(
 {
 	struct tcm_vhost_tport *tv_tport;
 	struct tcm_vhost_tpg *tv_tpg;
-	int index;
+	int index, ret;
 
 	mutex_lock(&vs->dev.mutex);
 	/* Verify that ring has been setup correctly. */
 	for (index = 0; index < vs->dev.nvqs; ++index) {
 		if (!vhost_vq_access_ok(&vs->vqs[index])) {
-			mutex_unlock(&vs->dev.mutex);
-			return -EFAULT;
+			ret = -EFAULT;
+			goto err;
 		}
 	}
 
 	if (!vs->vs_tpg) {
-		mutex_unlock(&vs->dev.mutex);
-		return -ENODEV;
+		ret = -ENODEV;
+		goto err;
 	}
 	tv_tpg = vs->vs_tpg;
 	tv_tport = tv_tpg->tport;
 
 	if (strcmp(tv_tport->tport_name, t->vhost_wwpn) ||
 	    (tv_tpg->tport_tpgt != t->vhost_tpgt)) {
-		mutex_unlock(&vs->dev.mutex);
 		pr_warn("tv_tport->tport_name: %s, tv_tpg->tport_tpgt: %hu"
 			" does not match t->vhost_wwpn: %s, t->vhost_tpgt: %hu\n",
 			tv_tport->tport_name, tv_tpg->tport_tpgt,
 			t->vhost_wwpn, t->vhost_tpgt);
-		return -EINVAL;
+		ret = -EINVAL;
+		goto err;
 	}
-	atomic_dec(&tv_tpg->tv_tpg_vhost_count);
+	tv_tpg->tv_tpg_vhost_count--;
 	vs->vs_tpg = NULL;
 	mutex_unlock(&vs->dev.mutex);
 
 	return 0;
+
+err:
+	mutex_unlock(&vs->dev.mutex);
+	return ret;
 }
 
 static int vhost_scsi_open(struct inode *inode, struct file *f)
@@ -918,9 +920,9 @@ static int vhost_scsi_open(struct inode *inode, struct file *f)
 	INIT_LIST_HEAD(&s->vs_completion_list);
 	spin_lock_init(&s->vs_completion_lock);
 
-	s->vqs[0].handle_kick = vhost_scsi_ctl_handle_kick;
-	s->vqs[1].handle_kick = vhost_scsi_evt_handle_kick;
-	s->vqs[2].handle_kick = vhost_scsi_handle_kick;
+	s->vqs[VHOST_SCSI_VQ_CTL].handle_kick = vhost_scsi_ctl_handle_kick;
+	s->vqs[VHOST_SCSI_VQ_EVT].handle_kick = vhost_scsi_evt_handle_kick;
+	s->vqs[VHOST_SCSI_VQ_IO].handle_kick = vhost_scsi_handle_kick;
 	r = vhost_dev_init(&s->dev, s->vqs, 3);
 	if (r < 0) {
 		kfree(s);
@@ -949,6 +951,18 @@ static int vhost_scsi_release(struct inode *inode, struct file *f)
 	return 0;
 }
 
+static void vhost_scsi_flush_vq(struct vhost_scsi *vs, int index)
+{
+	vhost_poll_flush(&vs->dev.vqs[index].poll);
+}
+
+static void vhost_scsi_flush(struct vhost_scsi *vs)
+{
+	vhost_scsi_flush_vq(vs, VHOST_SCSI_VQ_CTL);
+	vhost_scsi_flush_vq(vs, VHOST_SCSI_VQ_EVT);
+	vhost_scsi_flush_vq(vs, VHOST_SCSI_VQ_IO);
+}
+
 static int vhost_scsi_set_features(struct vhost_scsi *vs, u64 features)
 {
 	if (features & ~VHOST_FEATURES)
@@ -961,7 +975,8 @@ static int vhost_scsi_set_features(struct vhost_scsi *vs, u64 features)
 		return -EFAULT;
 	}
 	vs->dev.acked_features = features;
-	/* TODO possibly smp_wmb() and flush vqs */
+	smp_wmb();
+	vhost_scsi_flush(vs);
 	mutex_unlock(&vs->dev.mutex);
 	return 0;
 }
@@ -974,7 +989,7 @@ static long vhost_scsi_ioctl(struct file *f, unsigned int ioctl,
 	void __user *argp = (void __user *)arg;
 	u64 __user *featurep = argp;
 	u64 features;
-	int r;
+	int r, abi_version = VHOST_SCSI_ABI_VERSION;
 
 	switch (ioctl) {
 	case VHOST_SCSI_SET_ENDPOINT:
@@ -988,12 +1003,7 @@ static long vhost_scsi_ioctl(struct file *f, unsigned int ioctl,
 
 		return vhost_scsi_clear_endpoint(vs, &backend);
 	case VHOST_SCSI_GET_ABI_VERSION:
-		if (copy_from_user(&backend, argp, sizeof backend))
-			return -EFAULT;
-
-		backend.abi_version = VHOST_SCSI_ABI_VERSION;
-
-		if (copy_to_user(argp, &backend, sizeof backend))
+		if (copy_to_user(argp, &abi_version, sizeof abi_version))
 			return -EFAULT;
 		return 0;
 	case VHOST_GET_FEATURES:
@@ -1013,11 +1023,21 @@ static long vhost_scsi_ioctl(struct file *f, unsigned int ioctl,
 	}
 }
 
+#ifdef CONFIG_COMPAT
+static long vhost_scsi_compat_ioctl(struct file *f, unsigned int ioctl,
+				unsigned long arg)
+{
+	return vhost_scsi_ioctl(f, ioctl, (unsigned long)compat_ptr(arg));
+}
+#endif
+
 static const struct file_operations vhost_scsi_fops = {
 	.owner          = THIS_MODULE,
 	.release        = vhost_scsi_release,
 	.unlocked_ioctl = vhost_scsi_ioctl,
-	/* TODO compat ioctl? */
+#ifdef CONFIG_COMPAT
+	.compat_ioctl	= vhost_scsi_compat_ioctl,
+#endif
 	.open           = vhost_scsi_open,
 	.llseek		= noop_llseek,
 };
@@ -1054,28 +1074,28 @@ static char *tcm_vhost_dump_proto_id(struct tcm_vhost_tport *tport)
 	return "Unknown";
 }
 
-static int tcm_vhost_port_link(
-	struct se_portal_group *se_tpg,
+static int tcm_vhost_port_link(struct se_portal_group *se_tpg,
 	struct se_lun *lun)
 {
 	struct tcm_vhost_tpg *tv_tpg = container_of(se_tpg,
 				struct tcm_vhost_tpg, se_tpg);
 
-	atomic_inc(&tv_tpg->tv_tpg_port_count);
-	smp_mb__after_atomic_inc();
+	mutex_lock(&tv_tpg->tv_tpg_mutex);
+	tv_tpg->tv_tpg_port_count++;
+	mutex_unlock(&tv_tpg->tv_tpg_mutex);
 
 	return 0;
 }
 
-static void tcm_vhost_port_unlink(
-	struct se_portal_group *se_tpg,
+static void tcm_vhost_port_unlink(struct se_portal_group *se_tpg,
 	struct se_lun *se_lun)
 {
 	struct tcm_vhost_tpg *tv_tpg = container_of(se_tpg,
 				struct tcm_vhost_tpg, se_tpg);
 
-	atomic_dec(&tv_tpg->tv_tpg_port_count);
-	smp_mb__after_atomic_dec();
+	mutex_lock(&tv_tpg->tv_tpg_mutex);
+	tv_tpg->tv_tpg_port_count--;
+	mutex_unlock(&tv_tpg->tv_tpg_mutex);
 }
 
 static struct se_node_acl *tcm_vhost_make_nodeacl(
@@ -1122,8 +1142,7 @@ static void tcm_vhost_drop_nodeacl(struct se_node_acl *se_acl)
 	kfree(nacl);
 }
 
-static int tcm_vhost_make_nexus(
-	struct tcm_vhost_tpg *tv_tpg,
+static int tcm_vhost_make_nexus(struct tcm_vhost_tpg *tv_tpg,
 	const char *name)
 {
 	struct se_portal_group *se_tpg;
@@ -1168,7 +1187,7 @@ static int tcm_vhost_make_nexus(
 		return -ENOMEM;
 	}
 	/*
-	 * Now register the TCM vHost virtual I_T Nexus as active with the
+	 * Now register the TCM vhost virtual I_T Nexus as active with the
 	 * call to __transport_register_session()
 	 */
 	__transport_register_session(se_tpg, tv_nexus->tvn_se_sess->se_node_acl,
@@ -1179,8 +1198,7 @@ static int tcm_vhost_make_nexus(
 	return 0;
 }
 
-static int tcm_vhost_drop_nexus(
-	struct tcm_vhost_tpg *tpg)
+static int tcm_vhost_drop_nexus(struct tcm_vhost_tpg *tpg)
 {
 	struct se_session *se_sess;
 	struct tcm_vhost_nexus *tv_nexus;
@@ -1198,27 +1216,27 @@ static int tcm_vhost_drop_nexus(
 		return -ENODEV;
 	}
 
-	if (atomic_read(&tpg->tv_tpg_port_count)) {
+	if (tpg->tv_tpg_port_count != 0) {
 		mutex_unlock(&tpg->tv_tpg_mutex);
-		pr_err("Unable to remove TCM_vHost I_T Nexus with"
+		pr_err("Unable to remove TCM_vhost I_T Nexus with"
 			" active TPG port count: %d\n",
-			atomic_read(&tpg->tv_tpg_port_count));
-		return -EPERM;
+			tpg->tv_tpg_port_count);
+		return -EBUSY;
 	}
 
-	if (atomic_read(&tpg->tv_tpg_vhost_count)) {
+	if (tpg->tv_tpg_vhost_count != 0) {
 		mutex_unlock(&tpg->tv_tpg_mutex);
-		pr_err("Unable to remove TCM_vHost I_T Nexus with"
+		pr_err("Unable to remove TCM_vhost I_T Nexus with"
 			" active TPG vhost count: %d\n",
-			atomic_read(&tpg->tv_tpg_vhost_count));
-		return -EPERM;
+			tpg->tv_tpg_vhost_count);
+		return -EBUSY;
 	}
 
-	pr_debug("TCM_vHost_ConfigFS: Removing I_T Nexus to emulated"
+	pr_debug("TCM_vhost_ConfigFS: Removing I_T Nexus to emulated"
 		" %s Initiator Port: %s\n", tcm_vhost_dump_proto_id(tpg->tport),
 		tv_nexus->tvn_se_sess->se_node_acl->initiatorname);
 	/*
-	 * Release the SCSI I_T Nexus to the emulated vHost Target Port
+	 * Release the SCSI I_T Nexus to the emulated vhost Target Port
 	 */
 	transport_deregister_session(tv_nexus->tvn_se_sess);
 	tpg->tpg_nexus = NULL;
@@ -1228,8 +1246,7 @@ static int tcm_vhost_drop_nexus(
 	return 0;
 }
 
-static ssize_t tcm_vhost_tpg_show_nexus(
-	struct se_portal_group *se_tpg,
+static ssize_t tcm_vhost_tpg_show_nexus(struct se_portal_group *se_tpg,
 	char *page)
 {
 	struct tcm_vhost_tpg *tv_tpg = container_of(se_tpg,
@@ -1250,8 +1267,7 @@ static ssize_t tcm_vhost_tpg_show_nexus(
 	return ret;
 }
 
-static ssize_t tcm_vhost_tpg_store_nexus(
-	struct se_portal_group *se_tpg,
+static ssize_t tcm_vhost_tpg_store_nexus(struct se_portal_group *se_tpg,
 	const char *page,
 	size_t count)
 {
@@ -1336,8 +1352,7 @@ static struct configfs_attribute *tcm_vhost_tpg_attrs[] = {
 	NULL,
 };
 
-static struct se_portal_group *tcm_vhost_make_tpg(
-	struct se_wwn *wwn,
+static struct se_portal_group *tcm_vhost_make_tpg(struct se_wwn *wwn,
 	struct config_group *group,
 	const char *name)
 {
@@ -1385,7 +1400,7 @@ static void tcm_vhost_drop_tpg(struct se_portal_group *se_tpg)
 	list_del(&tpg->tv_tpg_list);
 	mutex_unlock(&tcm_vhost_mutex);
 	/*
-	 * Release the virtual I_T Nexus for this vHost TPG
+	 * Release the virtual I_T Nexus for this vhost TPG
 	 */
 	tcm_vhost_drop_nexus(tpg);
 	/*
@@ -1395,8 +1410,7 @@ static void tcm_vhost_drop_tpg(struct se_portal_group *se_tpg)
 	kfree(tpg);
 }
 
-static struct se_wwn *tcm_vhost_make_tport(
-	struct target_fabric_configfs *tf,
+static struct se_wwn *tcm_vhost_make_tport(struct target_fabric_configfs *tf,
 	struct config_group *group,
 	const char *name)
 {
@@ -1592,7 +1606,10 @@ static void tcm_vhost_deregister_configfs(void)
 static int __init tcm_vhost_init(void)
 {
 	int ret = -ENOMEM;
-
+	/*
+	 * Use our own dedicated workqueue for submitting I/O into
+	 * target core to avoid contention within system_wq.
+	 */
 	tcm_vhost_workqueue = alloc_workqueue("tcm_vhost", 0, 0);
 	if (!tcm_vhost_workqueue)
 		goto out;
diff --git a/drivers/vhost/tcm_vhost.h b/drivers/vhost/tcm_vhost.h
index c983ed2..eff42df 100644
--- a/drivers/vhost/tcm_vhost.h
+++ b/drivers/vhost/tcm_vhost.h
@@ -47,9 +47,9 @@ struct tcm_vhost_tpg {
 	/* Vhost port target portal group tag for TCM */
 	u16 tport_tpgt;
 	/* Used to track number of TPG Port/Lun Links wrt to explict I_T Nexus shutdown */
-	atomic_t tv_tpg_port_count;
-	/* Used for vhost_scsi device reference to tpg_nexus */
-	atomic_t tv_tpg_vhost_count;
+	int tv_tpg_port_count;
+	/* Used for vhost_scsi device reference to tpg_nexus, protected by tv_tpg_mutex */
+	int tv_tpg_vhost_count;
 	/* list for tcm_vhost_list */
 	struct list_head tv_tpg_list;
 	/* Used to protect access for tpg_nexus */
@@ -98,4 +98,5 @@ struct vhost_scsi_target {
 /* VHOST_SCSI specific defines */
 #define VHOST_SCSI_SET_ENDPOINT _IOW(VHOST_VIRTIO, 0x40, struct vhost_scsi_target)
 #define VHOST_SCSI_CLEAR_ENDPOINT _IOW(VHOST_VIRTIO, 0x41, struct vhost_scsi_target)
-#define VHOST_SCSI_GET_ABI_VERSION _IOW(VHOST_VIRTIO, 0x42, struct vhost_scsi_target)
+/* Changing this breaks userspace. */
+#define VHOST_SCSI_GET_ABI_VERSION _IOW(VHOST_VIRTIO, 0x42, int)
-- 
cgit v1.1


From 1fa8f4504130adc34a071a29170f570102136835 Mon Sep 17 00:00:00 2001
From: Mark Rustad <mark.d.rustad@intel.com>
Date: Wed, 1 Aug 2012 14:51:53 -0700
Subject: tcm_fc: Avoid debug overhead when not debugging

Stop doing a pile of work related to debugging messages when
the ft_debug_logging flag is not set. Use unlikely to add the
check in a way that the check can be inlined without inlining the
whole thing.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
 drivers/target/tcm_fc/tcm_fc.h  | 1 +
 drivers/target/tcm_fc/tfc_cmd.c | 8 +++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/target/tcm_fc/tcm_fc.h b/drivers/target/tcm_fc/tcm_fc.h
index c5eb3c3..eea6935 100644
--- a/drivers/target/tcm_fc/tcm_fc.h
+++ b/drivers/target/tcm_fc/tcm_fc.h
@@ -131,6 +131,7 @@ extern struct list_head ft_lport_list;
 extern struct mutex ft_lport_lock;
 extern struct fc4_prov ft_prov;
 extern struct target_fabric_configfs *ft_configfs;
+extern unsigned int ft_debug_logging;
 
 /*
  * Fabric methods.
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c
index b9cb500..823e692 100644
--- a/drivers/target/tcm_fc/tfc_cmd.c
+++ b/drivers/target/tcm_fc/tfc_cmd.c
@@ -48,7 +48,7 @@
 /*
  * Dump cmd state for debugging.
  */
-void ft_dump_cmd(struct ft_cmd *cmd, const char *caller)
+static void _ft_dump_cmd(struct ft_cmd *cmd, const char *caller)
 {
 	struct fc_exch *ep;
 	struct fc_seq *sp;
@@ -80,6 +80,12 @@ void ft_dump_cmd(struct ft_cmd *cmd, const char *caller)
 	}
 }
 
+void ft_dump_cmd(struct ft_cmd *cmd, const char *caller)
+{
+	if (unlikely(ft_debug_logging))
+		_ft_dump_cmd(cmd, caller);
+}
+
 static void ft_free_cmd(struct ft_cmd *cmd)
 {
 	struct fc_frame *fp;
-- 
cgit v1.1


From d0e27c88d795fb9647153063ec48051fd84e1731 Mon Sep 17 00:00:00 2001
From: Yi Zou <yi.zou@intel.com>
Date: Tue, 14 Aug 2012 16:06:43 -0700
Subject: target: fix NULL pointer dereference bug alloc_page() fails to get
 memory

I am hitting this bug when the target is low in memory that fails the
alloc_page() for the newly submitted command. This is a sort of off-by-one
bug causing NULL pointer dereference in __free_page() since 'i' here is
really the counter of total pages that have been successfully allocated here.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Cc: Andy Grover <agrover@redhat.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Cc: Open-FCoE.org <devel@open-fcoe.org>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
 drivers/target/target_core_transport.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 0eaae23..a7589cc 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2294,9 +2294,9 @@ transport_generic_get_mem(struct se_cmd *cmd)
 	return 0;
 
 out:
-	while (i >= 0) {
-		__free_page(sg_page(&cmd->t_data_sg[i]));
+	while (i > 0) {
 		i--;
+		__free_page(sg_page(&cmd->t_data_sg[i]));
 	}
 	kfree(cmd->t_data_sg);
 	cmd->t_data_sg = NULL;
-- 
cgit v1.1


From 5b7517f81449067caf3d402e4abc6cd92096fe62 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Thu, 16 Aug 2012 18:56:34 -0700
Subject: tcm_vhost: Change vhost_scsi_target->vhost_wwpn to char *

This patch changes the vhost_scsi_target->vhost_wwpn[] type used
by VHOST_SCSI_* ioctls to 'char *' as requested by Blue Swirl in
order to match the latest QEMU vhost-scsi RFC-v3 userspace code.

Queuing this up into target-pending/master for a -rc3 PULL.

Reported-by: Blue Swirl <blauwirbel@gmail.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
 drivers/vhost/tcm_vhost.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/vhost/tcm_vhost.h b/drivers/vhost/tcm_vhost.h
index eff42df..e9d5c02 100644
--- a/drivers/vhost/tcm_vhost.h
+++ b/drivers/vhost/tcm_vhost.h
@@ -91,7 +91,7 @@ struct tcm_vhost_tport {
 
 struct vhost_scsi_target {
 	int abi_version;
-	unsigned char vhost_wwpn[TRANSPORT_IQN_LEN];
+	char vhost_wwpn[TRANSPORT_IQN_LEN];
 	unsigned short vhost_tpgt;
 };
 
-- 
cgit v1.1


From 1d2a2cd95ee0137a2353d1b5635739c281f27cd4 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Wed, 8 Aug 2012 00:14:13 +0000
Subject: target/pscsi: Fix bug with REPORT_LUNs handling for SCSI passthrough

This patch fixes a regression bug in pscsi_transport_complete() callback
code where *pt was being NULL dereferenced during REPORT_LUNS handling,
that was introduced with the spc/sbc refactoring in:

commit 1fd032ee10d2816c947f5d5b9abda95e728f0a8f
Author: Christoph Hellwig <hch@infradead.org>
Date:   Sun May 20 11:59:15 2012 -0400

    target: move code for CDB emulation

As this is a special case for pscsi_parse_cdb() to call spc_parse_cdb() to
allow TCM to handle REPORT_LUN emulation, pscsi_plugin_task will have not
been allocated..

So now in pscsi_transport_complete() just check for existence of *pt and
return for this special case.

Reported-by: Alex Elsayed <eternaleye+usenet@gmail.com>
Cc: Alex Elsayed <eternaleye+usenet@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
 drivers/target/target_core_pscsi.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 6e32ff6..5552fa7 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -673,8 +673,15 @@ static int pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg)
 	struct scsi_device *sd = pdv->pdv_sd;
 	int result;
 	struct pscsi_plugin_task *pt = cmd->priv;
-	unsigned char *cdb = &pt->pscsi_cdb[0];
+	unsigned char *cdb;
+	/*
+	 * Special case for REPORT_LUNs handling where pscsi_plugin_task has
+	 * not been allocated because TCM is handling the emulation directly.
+	 */
+	if (!pt)
+		return 0;
 
+	cdb = &pt->pscsi_cdb[0];
 	result = pt->pscsi_result;
 	/*
 	 * Hack to make sure that Write-Protect modepage is set if R/O mode is
-- 
cgit v1.1


From 38ab8a2009e33ded06bf80d3a95da393d8d651d6 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Wed, 15 Aug 2012 12:32:36 +0300
Subject: drm/i915: fix EDID memory leak in SDVO

The EDID returned by drm_get_edid() was never freed.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/intel_sdvo.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index d172e98..d81bb0b 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1692,6 +1692,7 @@ static bool intel_sdvo_detect_hdmi_audio(struct drm_connector *connector)
 	edid = intel_sdvo_get_edid(connector);
 	if (edid != NULL && edid->input & DRM_EDID_INPUT_DIGITAL)
 		has_audio = drm_detect_monitor_audio(edid);
+	kfree(edid);
 
 	return has_audio;
 }
-- 
cgit v1.1


From b6c7488df68ae3660d81b149b61b55b97929da83 Mon Sep 17 00:00:00 2001
From: Ben Widawsky <ben@bwidawsk.net>
Date: Tue, 14 Aug 2012 14:35:14 -0700
Subject: drm/i915/contexts: fix list corruption

After reset we unconditionally reinitialize lists. If the context switch
hasn't yet completed before the suspend, the default context object will
end up on lists that are going to go away when we resume.

The patch forces the context switch to be synchronous before suspend
assuring that the active/inactive tracking is correct at the time of
resume.

References: https://bugs.freedesktop.org/show_bug.cgi?id=52429
Tested-by: Guang A Yang <guang.a.yang@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/i915_gem.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 5c4657a..489e2b1 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2365,6 +2365,10 @@ int i915_gpu_idle(struct drm_device *dev)
 
 	/* Flush everything onto the inactive list. */
 	for_each_ring(ring, dev_priv, i) {
+		ret = i915_switch_context(ring, NULL, DEFAULT_CONTEXT_ID);
+		if (ret)
+			return ret;
+
 		ret = i915_ring_idle(ring);
 		if (ret)
 			return ret;
@@ -2372,10 +2376,6 @@ int i915_gpu_idle(struct drm_device *dev)
 		/* Is the device fubar? */
 		if (WARN_ON(!list_empty(&ring->gpu_write_list)))
 			return -EBUSY;
-
-		ret = i915_switch_context(ring, NULL, DEFAULT_CONTEXT_ID);
-		if (ret)
-			return ret;
 	}
 
 	return 0;
-- 
cgit v1.1


From a843af186c3157cee58f1cf689385ab906e1f109 Mon Sep 17 00:00:00 2001
From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue, 14 Aug 2012 11:42:14 -0300
Subject: drm/i915: fix hsw uncached pte

They've changed it ... for no apparent reason. Meh.

V2: remove unused 'is_hsw' field.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/char/agp/intel-agp.h        |   1 +
 drivers/char/agp/intel-gtt.c        | 105 +++++++++++++++++++++++-------------
 drivers/gpu/drm/i915/i915_gem_gtt.c |   5 +-
 drivers/gpu/drm/i915/i915_reg.h     |   1 +
 4 files changed, 75 insertions(+), 37 deletions(-)

(limited to 'drivers')

diff --git a/drivers/char/agp/intel-agp.h b/drivers/char/agp/intel-agp.h
index 6f007b6..6ec0fff 100644
--- a/drivers/char/agp/intel-agp.h
+++ b/drivers/char/agp/intel-agp.h
@@ -64,6 +64,7 @@
 #define I830_PTE_SYSTEM_CACHED  0x00000006
 /* GT PTE cache control fields */
 #define GEN6_PTE_UNCACHED	0x00000002
+#define HSW_PTE_UNCACHED	0x00000000
 #define GEN6_PTE_LLC		0x00000004
 #define GEN6_PTE_LLC_MLC	0x00000006
 #define GEN6_PTE_GFDT		0x00000008
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 08fc5cb..58e32f7 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -1156,6 +1156,30 @@ static bool gen6_check_flags(unsigned int flags)
 	return true;
 }
 
+static void haswell_write_entry(dma_addr_t addr, unsigned int entry,
+				unsigned int flags)
+{
+	unsigned int type_mask = flags & ~AGP_USER_CACHED_MEMORY_GFDT;
+	unsigned int gfdt = flags & AGP_USER_CACHED_MEMORY_GFDT;
+	u32 pte_flags;
+
+	if (type_mask == AGP_USER_MEMORY)
+		pte_flags = HSW_PTE_UNCACHED | I810_PTE_VALID;
+	else if (type_mask == AGP_USER_CACHED_MEMORY_LLC_MLC) {
+		pte_flags = GEN6_PTE_LLC_MLC | I810_PTE_VALID;
+		if (gfdt)
+			pte_flags |= GEN6_PTE_GFDT;
+	} else { /* set 'normal'/'cached' to LLC by default */
+		pte_flags = GEN6_PTE_LLC | I810_PTE_VALID;
+		if (gfdt)
+			pte_flags |= GEN6_PTE_GFDT;
+	}
+
+	/* gen6 has bit11-4 for physical addr bit39-32 */
+	addr |= (addr >> 28) & 0xff0;
+	writel(addr | pte_flags, intel_private.gtt + entry);
+}
+
 static void gen6_write_entry(dma_addr_t addr, unsigned int entry,
 			     unsigned int flags)
 {
@@ -1382,6 +1406,15 @@ static const struct intel_gtt_driver sandybridge_gtt_driver = {
 	.check_flags = gen6_check_flags,
 	.chipset_flush = i9xx_chipset_flush,
 };
+static const struct intel_gtt_driver haswell_gtt_driver = {
+	.gen = 6,
+	.setup = i9xx_setup,
+	.cleanup = gen6_cleanup,
+	.write_entry = haswell_write_entry,
+	.dma_mask_size = 40,
+	.check_flags = gen6_check_flags,
+	.chipset_flush = i9xx_chipset_flush,
+};
 static const struct intel_gtt_driver valleyview_gtt_driver = {
 	.gen = 7,
 	.setup = i9xx_setup,
@@ -1499,77 +1532,77 @@ static const struct intel_gtt_driver_description {
 	{ PCI_DEVICE_ID_INTEL_VALLEYVIEW_IG,
 	    "ValleyView", &valleyview_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_D_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_D_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_D_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_M_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_M_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_M_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_S_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_S_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_S_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_SDV_D_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_SDV_D_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_SDV_D_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_SDV_M_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_SDV_M_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_SDV_M_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_SDV_S_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_SDV_S_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_SDV_S_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_ULT_D_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_ULT_D_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_ULT_D_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_ULT_M_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_ULT_M_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_ULT_M_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_ULT_S_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_ULT_S_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_ULT_S_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_CRW_D_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_CRW_D_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_CRW_D_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_CRW_M_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_CRW_M_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_CRW_M_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_CRW_S_GT1_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_CRW_S_GT2_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ PCI_DEVICE_ID_INTEL_HASWELL_CRW_S_GT2_PLUS_IG,
-	    "Haswell", &sandybridge_gtt_driver },
+	    "Haswell", &haswell_gtt_driver },
 	{ 0, NULL, NULL }
 };
 
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index ee9b68f..d9a5372 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -261,7 +261,10 @@ void i915_ppgtt_bind_object(struct i915_hw_ppgtt *ppgtt,
 		pte_flags |= GEN6_PTE_CACHE_LLC;
 		break;
 	case I915_CACHE_NONE:
-		pte_flags |= GEN6_PTE_UNCACHED;
+		if (IS_HASWELL(dev))
+			pte_flags |= HSW_PTE_UNCACHED;
+		else
+			pte_flags |= GEN6_PTE_UNCACHED;
 		break;
 	default:
 		BUG();
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index acc99b2..28725ce 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -115,6 +115,7 @@
 
 #define GEN6_PTE_VALID			(1 << 0)
 #define GEN6_PTE_UNCACHED		(1 << 1)
+#define HSW_PTE_UNCACHED		(0)
 #define GEN6_PTE_CACHE_LLC		(2 << 1)
 #define GEN6_PTE_CACHE_LLC_MLC		(3 << 1)
 #define GEN6_PTE_CACHE_BITS		(3 << 1)
-- 
cgit v1.1


From 4eab81366465aedcfd26de960c595bc03599c09f Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Mon, 13 Aug 2012 13:22:34 +0300
Subject: drm/i915: extract connector update from intel_ddc_get_modes() for
 reuse

Refactor the connector update part of intel_ddc_get_modes() into a separate
intel_connector_update_modes() function for reuse. No functional changes.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=45881
Tested-by: Alex Ferrando <alferpal@gmail.com>
Cc: stable@vger.kernel.org (for 3.4+3.5)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/intel_drv.h   |  2 ++
 drivers/gpu/drm/i915/intel_modes.c | 31 ++++++++++++++++++++++---------
 2 files changed, 24 insertions(+), 9 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 132ab51..cd54cf8 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -342,6 +342,8 @@ struct intel_fbc_work {
 	int interval;
 };
 
+int intel_connector_update_modes(struct drm_connector *connector,
+				struct edid *edid);
 int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
 
 extern void intel_attach_force_audio_property(struct drm_connector *connector);
diff --git a/drivers/gpu/drm/i915/intel_modes.c b/drivers/gpu/drm/i915/intel_modes.c
index 45848b9..29b7259 100644
--- a/drivers/gpu/drm/i915/intel_modes.c
+++ b/drivers/gpu/drm/i915/intel_modes.c
@@ -33,6 +33,25 @@
 #include "i915_drv.h"
 
 /**
+ * intel_connector_update_modes - update connector from edid
+ * @connector: DRM connector device to use
+ * @edid: previously read EDID information
+ */
+int intel_connector_update_modes(struct drm_connector *connector,
+				struct edid *edid)
+{
+	int ret;
+
+	drm_mode_connector_update_edid_property(connector, edid);
+	ret = drm_add_edid_modes(connector, edid);
+	drm_edid_to_eld(connector, edid);
+	connector->display_info.raw_edid = NULL;
+	kfree(edid);
+
+	return ret;
+}
+
+/**
  * intel_ddc_get_modes - get modelist from monitor
  * @connector: DRM connector device to use
  * @adapter: i2c adapter
@@ -43,18 +62,12 @@ int intel_ddc_get_modes(struct drm_connector *connector,
 			struct i2c_adapter *adapter)
 {
 	struct edid *edid;
-	int ret = 0;
 
 	edid = drm_get_edid(connector, adapter);
-	if (edid) {
-		drm_mode_connector_update_edid_property(connector, edid);
-		ret = drm_add_edid_modes(connector, edid);
-		drm_edid_to_eld(connector, edid);
-		connector->display_info.raw_edid = NULL;
-		kfree(edid);
-	}
+	if (!edid)
+		return 0;
 
-	return ret;
+	return intel_connector_update_modes(connector, edid);
 }
 
 static const struct drm_prop_enum_list force_audio_names[] = {
-- 
cgit v1.1


From f1a2f5b7c5f0941d23eef0a095c0b99bf8d051e6 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Mon, 13 Aug 2012 13:22:35 +0300
Subject: drm/i915: fall back to bit-banging if GMBUS fails in CRT EDID reads

GMBUS was enabled over bit-banging as the default in commits:

commit c3dfefa0a6d235bd465309e12f4c56ea16e71111
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Tue Feb 14 22:37:25 2012 +0100

    drm/i915: reenable gmbus on gen3+ again

and

commit 0fb3f969c8683505fb7323c06bf8a999a5a45a15
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Mar 2 19:38:30 2012 +0100

    drm/i915: enable gmbus on gen2

Unfortunately, GMBUS seems to fail on some CRT displays. Add a bit-banging
fallback to CRT EDID reads.

LKML-Reference: <201207251020.47637.maciej.rutecki@gmail.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=45881
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Alex Ferrando <alferpal@gmail.com>
Cc: stable@vger.kernel.org (for 3.4+3.5)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/intel_crt.c | 36 +++++++++++++++++++++++++++++++++---
 1 file changed, 33 insertions(+), 3 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 7ed4a41..23bdc8c 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -326,6 +326,36 @@ static bool intel_crt_detect_hotplug(struct drm_connector *connector)
 	return ret;
 }
 
+static struct edid *intel_crt_get_edid(struct drm_connector *connector,
+				struct i2c_adapter *i2c)
+{
+	struct edid *edid;
+
+	edid = drm_get_edid(connector, i2c);
+
+	if (!edid && !intel_gmbus_is_forced_bit(i2c)) {
+		DRM_DEBUG_KMS("CRT GMBUS EDID read failed, retry using GPIO bit-banging\n");
+		intel_gmbus_force_bit(i2c, true);
+		edid = drm_get_edid(connector, i2c);
+		intel_gmbus_force_bit(i2c, false);
+	}
+
+	return edid;
+}
+
+/* local version of intel_ddc_get_modes() to use intel_crt_get_edid() */
+static int intel_crt_ddc_get_modes(struct drm_connector *connector,
+				struct i2c_adapter *adapter)
+{
+	struct edid *edid;
+
+	edid = intel_crt_get_edid(connector, adapter);
+	if (!edid)
+		return 0;
+
+	return intel_connector_update_modes(connector, edid);
+}
+
 static bool intel_crt_detect_ddc(struct drm_connector *connector)
 {
 	struct intel_crt *crt = intel_attached_crt(connector);
@@ -336,7 +366,7 @@ static bool intel_crt_detect_ddc(struct drm_connector *connector)
 	BUG_ON(crt->base.type != INTEL_OUTPUT_ANALOG);
 
 	i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->crt_ddc_pin);
-	edid = drm_get_edid(connector, i2c);
+	edid = intel_crt_get_edid(connector, i2c);
 
 	if (edid) {
 		bool is_digital = edid->input & DRM_EDID_INPUT_DIGITAL;
@@ -544,13 +574,13 @@ static int intel_crt_get_modes(struct drm_connector *connector)
 	struct i2c_adapter *i2c;
 
 	i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->crt_ddc_pin);
-	ret = intel_ddc_get_modes(connector, i2c);
+	ret = intel_crt_ddc_get_modes(connector, i2c);
 	if (ret || !IS_G4X(dev))
 		return ret;
 
 	/* Try to probe digital port for output in DVI-I -> VGA mode. */
 	i2c = intel_gmbus_get_adapter(dev_priv, GMBUS_PORT_DPB);
-	return intel_ddc_get_modes(connector, i2c);
+	return intel_crt_ddc_get_modes(connector, i2c);
 }
 
 static int intel_crt_set_property(struct drm_connector *connector,
-- 
cgit v1.1


From dfeb86ecde7ae6ce15bd69a6a205b5e13aea8111 Mon Sep 17 00:00:00 2001
From: Sachin Kamat <sachin.kamat@linaro.org>
Date: Thu, 2 Aug 2012 12:32:42 +0530
Subject: pwm: Add missing static storage class specifiers in core.c file

Fixes the following sparse warnings:
drivers/pwm/core.c:152:6: warning:
symbol 'of_pwmchip_add' was not declared. Should it be static?
drivers/pwm/core.c:165:6: warning:
symbol 'of_pwmchip_remove' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
---
 drivers/pwm/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index ecb7690..4a8bdfa 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -149,7 +149,7 @@ static struct pwm_device *of_pwm_simple_xlate(struct pwm_chip *pc,
 	return pwm;
 }
 
-void of_pwmchip_add(struct pwm_chip *chip)
+static void of_pwmchip_add(struct pwm_chip *chip)
 {
 	if (!chip->dev || !chip->dev->of_node)
 		return;
@@ -162,7 +162,7 @@ void of_pwmchip_add(struct pwm_chip *chip)
 	of_node_get(chip->dev->of_node);
 }
 
-void of_pwmchip_remove(struct pwm_chip *chip)
+static void of_pwmchip_remove(struct pwm_chip *chip)
 {
 	if (chip->dev && chip->dev->of_node)
 		of_node_put(chip->dev->of_node);
-- 
cgit v1.1


From ecefeb79218064bf011c5d3ff25322ffa60c302c Mon Sep 17 00:00:00 2001
From: Jingoo Han <jg1.han@samsung.com>
Date: Thu, 2 Aug 2012 17:55:54 +0900
Subject: pwm: samsung: add missing device pointer to struct pwm_chip

This patch adds missing device pointer to struct pwm_chip. If the
device pointer is NULL, pwmchip_add() will return error.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
---
 drivers/pwm/pwm-samsung.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers')

diff --git a/drivers/pwm/pwm-samsung.c b/drivers/pwm/pwm-samsung.c
index d103865..e5187c0 100644
--- a/drivers/pwm/pwm-samsung.c
+++ b/drivers/pwm/pwm-samsung.c
@@ -225,6 +225,7 @@ static int s3c_pwm_probe(struct platform_device *pdev)
 
 	/* calculate base of control bits in TCON */
 	s3c->tcon_base = id == 0 ? 0 : (id * 4) + 4;
+	s3c->chip.dev = &pdev->dev;
 	s3c->chip.ops = &s3c_pwm_ops;
 	s3c->chip.base = -1;
 	s3c->chip.npwm = 1;
-- 
cgit v1.1


From 2ffdc9a64824a373d09f3417ae4377ec83cd9d16 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@gmail.com>
Date: Fri, 3 Aug 2012 21:43:54 +0800
Subject: pwm: Remove a redundant error message when devm_request_and_ioremap
 fails

The implementation in devm_request_and_ioremap() already shows error message,
so no need to show dev_err again if devm_request_and_ioremap() fails.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Philip, Avinash <avinashphilip@ti.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
---
 drivers/pwm/pwm-tegra.c    | 4 +---
 drivers/pwm/pwm-tiecap.c   | 4 +---
 drivers/pwm/pwm-tiehrpwm.c | 4 +---
 3 files changed, 3 insertions(+), 9 deletions(-)

(limited to 'drivers')

diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c
index 02ce18d..057465e 100644
--- a/drivers/pwm/pwm-tegra.c
+++ b/drivers/pwm/pwm-tegra.c
@@ -187,10 +187,8 @@ static int tegra_pwm_probe(struct platform_device *pdev)
 	}
 
 	pwm->mmio_base = devm_request_and_ioremap(&pdev->dev, r);
-	if (!pwm->mmio_base) {
-		dev_err(&pdev->dev, "failed to ioremap() region\n");
+	if (!pwm->mmio_base)
 		return -EADDRNOTAVAIL;
-	}
 
 	platform_set_drvdata(pdev, pwm);
 
diff --git a/drivers/pwm/pwm-tiecap.c b/drivers/pwm/pwm-tiecap.c
index 3c2ad28..0b66d0f 100644
--- a/drivers/pwm/pwm-tiecap.c
+++ b/drivers/pwm/pwm-tiecap.c
@@ -192,10 +192,8 @@ static int __devinit ecap_pwm_probe(struct platform_device *pdev)
 	}
 
 	pc->mmio_base = devm_request_and_ioremap(&pdev->dev, r);
-	if (!pc->mmio_base) {
-		dev_err(&pdev->dev, "failed to ioremap() registers\n");
+	if (!pc->mmio_base)
 		return -EADDRNOTAVAIL;
-	}
 
 	ret = pwmchip_add(&pc->chip);
 	if (ret < 0) {
diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c
index 010d232..c3756d1 100644
--- a/drivers/pwm/pwm-tiehrpwm.c
+++ b/drivers/pwm/pwm-tiehrpwm.c
@@ -371,10 +371,8 @@ static int __devinit ehrpwm_pwm_probe(struct platform_device *pdev)
 	}
 
 	pc->mmio_base = devm_request_and_ioremap(&pdev->dev, r);
-	if (!pc->mmio_base) {
-		dev_err(&pdev->dev, "failed to ioremap() registers\n");
+	if (!pc->mmio_base)
 		return  -EADDRNOTAVAIL;
-	}
 
 	ret = pwmchip_add(&pc->chip);
 	if (ret < 0) {
-- 
cgit v1.1


From eba7cbe5d8bbc3bc24f46973e44f1566f81d1f56 Mon Sep 17 00:00:00 2001
From: Sachin Kamat <sachin.kamat@linaro.org>
Date: Fri, 10 Aug 2012 10:12:09 +0530
Subject: pwm: vt8500: Fix coding style issue

Fixes the following:
WARNING: Prefer pr_warn(... to pr_warning(...
	pr_warning("Waiting for status bits 0x%x to clear timed out\n",

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
---
 drivers/pwm/pwm-vt8500.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/pwm/pwm-vt8500.c b/drivers/pwm/pwm-vt8500.c
index 5480214..ad14389 100644
--- a/drivers/pwm/pwm-vt8500.c
+++ b/drivers/pwm/pwm-vt8500.c
@@ -41,7 +41,7 @@ static inline void pwm_busy_wait(void __iomem *reg, u8 bitmask)
 		cpu_relax();
 
 	if (unlikely(!loops))
-		pr_warning("Waiting for status bits 0x%x to clear timed out\n",
+		pr_warn("Waiting for status bits 0x%x to clear timed out\n",
 			   bitmask);
 }
 
-- 
cgit v1.1


From e50d3523ff45646a48666ebbd3d8aeb0c75084ed Mon Sep 17 00:00:00 2001
From: Sachin Kamat <sachin.kamat@linaro.org>
Date: Fri, 10 Aug 2012 16:41:13 +0530
Subject: pwm: core: Fix coding style issues

Fixes the following:
WARNING: line over 80 characters
ERROR: spaces required around that ':' (ctx:VxW)
WARNING: Prefer pr_warn(... to pr_warning(...

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
---
 drivers/pwm/core.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'drivers')

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 4a8bdfa..c6e0507 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -129,8 +129,8 @@ static int pwm_device_request(struct pwm_device *pwm, const char *label)
 	return 0;
 }
 
-static struct pwm_device *of_pwm_simple_xlate(struct pwm_chip *pc,
-					      const struct of_phandle_args *args)
+static struct pwm_device *
+of_pwm_simple_xlate(struct pwm_chip *pc, const struct of_phandle_args *args)
 {
 	struct pwm_device *pwm;
 
@@ -527,7 +527,7 @@ void __init pwm_add_table(struct pwm_lookup *table, size_t num)
 struct pwm_device *pwm_get(struct device *dev, const char *con_id)
 {
 	struct pwm_device *pwm = ERR_PTR(-EPROBE_DEFER);
-	const char *dev_id = dev ? dev_name(dev): NULL;
+	const char *dev_id = dev ? dev_name(dev) : NULL;
 	struct pwm_chip *chip = NULL;
 	unsigned int index = 0;
 	unsigned int best = 0;
@@ -609,7 +609,7 @@ void pwm_put(struct pwm_device *pwm)
 	mutex_lock(&pwm_lock);
 
 	if (!test_and_clear_bit(PWMF_REQUESTED, &pwm->flags)) {
-		pr_warning("PWM device already freed\n");
+		pr_warn("PWM device already freed\n");
 		goto out;
 	}
 
-- 
cgit v1.1


From 74f4cf290918f05b6489aa732dfb08aa5606b9d6 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Thu, 16 Aug 2012 17:06:41 -0700
Subject: target: Fix regression bug with handling of zero-length data CDBs

This patch fixes a regression bug with the handling of zero-length
data CDBs within transport_generic_new_cmd() code.  The bug was introduced
with the following commit as part of the single task conversion work:

  commit 4101f0a89d4eb13f04cb0344d59a335b862ca5f9
  Author: Christoph Hellwig <hch@infradead.org>
  Date:   Tue Apr 24 00:25:03 2012 -0400

      target: always allocate a single task

where the zero-length check for SCF_SCSI_DATA_SG_IO_CDB was incorrectly
changed to SCF_SCSI_CONTROL_SG_IO_CDB because of the seperate comment
in transport_generic_new_cmd() wrt to control CDBs zero-length handling
introduced in:

  commit 91ec1d3535b2acf12c599045cc19ad9be3c6a47b
  Author: Nicholas Bellinger <nab@linux-iscsi.org>
  Date:   Fri Jan 13 12:01:34 2012 -0800

      target: Add workaround for zero-length control CDB handling

So go ahead and change transport_generic_new_cmd() to handle control+data
zero-length CDBs in the same manner for this special case.

Tested with iscsi-target + loopback fabric port LUNs on 3.6-rc0 code.

This patch will also need to be picked up for 3.5-stable.

(hch: Add proper comment in transport_generic_new_cmd)

Cc: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Andy Grover <agrover@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
 drivers/target/target_core_transport.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

(limited to 'drivers')

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index a7589cc..ea9a3d2 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2323,9 +2323,12 @@ int transport_generic_new_cmd(struct se_cmd *cmd)
 		if (ret < 0)
 			goto out_fail;
 	}
-
-	/* Workaround for handling zero-length control CDBs */
-	if (!(cmd->se_cmd_flags & SCF_SCSI_DATA_CDB) && !cmd->data_length) {
+	/*
+	 * If this command doesn't have any payload and we don't have to call
+	 * into the fabric for data transfers, go ahead and complete it right
+	 * away.
+	 */
+	if (!cmd->data_length) {
 		spin_lock_irq(&cmd->t_state_lock);
 		cmd->t_state = TRANSPORT_COMPLETE;
 		cmd->transport_state |= CMD_T_ACTIVE;
-- 
cgit v1.1


From b007a3ef958413736a9e2ba698ad6675a9d519ab Mon Sep 17 00:00:00 2001
From: Lee Jones <lee.jones@linaro.org>
Date: Tue, 7 Aug 2012 12:27:24 +0100
Subject: i2c: nomadik: Add default configuration into the Nomadik I2C driver

At this moment in time there is only one known configuration for the
Nomadik I2C driver. By not holding that configuration in the driver
adds some unnecessary overhead in platform code. The configuration
has already been removed from platform code, this patch checks for any
over-riding configurations. If there aren't any, the default is used.

[LinusW says: "Right now this is causing boot regressions so we need it
badly..."]

Acked-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
---
 drivers/i2c/busses/i2c-nomadik.c | 28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

(limited to 'drivers')

diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
index 5e6f1ee..61b00ed 100644
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c
@@ -350,10 +350,6 @@ static void setup_i2c_controller(struct nmk_i2c_dev *dev)
 
 	i2c_clk = clk_get_rate(dev->clk);
 
-	/* fallback to std. mode if machine has not provided it */
-	if (dev->cfg.clk_freq == 0)
-		dev->cfg.clk_freq = 100000;
-
 	/*
 	 * The spec says, in case of std. mode the divider is
 	 * 2 whereas it is 3 for fast and fastplus mode of
@@ -911,20 +907,32 @@ static const struct i2c_algorithm nmk_i2c_algo = {
 	.functionality	= nmk_i2c_functionality
 };
 
+static struct nmk_i2c_controller u8500_i2c = {
+	/*
+	 * Slave data setup time; 250ns, 100ns, and 10ns, which
+	 * is 14, 6 and 2 respectively for a 48Mhz i2c clock.
+	 */
+	.slsu           = 0xe,
+	.tft            = 1,      /* Tx FIFO threshold */
+	.rft            = 8,      /* Rx FIFO threshold */
+	.clk_freq       = 400000, /* fast mode operation */
+	.timeout        = 200,    /* Slave response timeout(ms) */
+	.sm             = I2C_FREQ_MODE_FAST,
+};
+
 static atomic_t adapter_id = ATOMIC_INIT(0);
 
 static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id)
 {
 	int ret = 0;
-	struct nmk_i2c_controller *pdata =
-			adev->dev.platform_data;
+	struct nmk_i2c_controller *pdata = adev->dev.platform_data;
 	struct nmk_i2c_dev	*dev;
 	struct i2c_adapter *adap;
 
-	if (!pdata) {
-		dev_warn(&adev->dev, "no platform data\n");
-		return -ENODEV;
-	}
+	if (!pdata)
+		/* No i2c configuration found, using the default. */
+		pdata = &u8500_i2c;
+
 	dev = kzalloc(sizeof(struct nmk_i2c_dev), GFP_KERNEL);
 	if (!dev) {
 		dev_err(&adev->dev, "cannot allocate memory\n");
-- 
cgit v1.1


From 33ec5e818b7b0d0d02864a9586050c6f9a6a8b98 Mon Sep 17 00:00:00 2001
From: Kevin Hilman <khilman@ti.com>
Date: Tue, 26 Jun 2012 18:45:32 -0700
Subject: I2C: OMAP: xfer: fix runtime PM get/put balance on error

In omap_i2c_xfer(), ensure pm_runtime_put() is called, even on
failure.

Without this, after a failed xfer, the runtime PM usecount will have
been incremented, but not decremented causing the usecount to never
reach zero after a failure.  This keeps the device always runtime PM
enabled which keeps the enclosing power domain active, and prevents
full-chip retention/off from happening during idle.

Signed-off-by: Kevin Hilman <khilman@ti.com>
Reviewed-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
---
 drivers/i2c/busses/i2c-omap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 6849635..5d19a49 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -584,7 +584,7 @@ omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
 
 	r = pm_runtime_get_sync(dev->dev);
 	if (IS_ERR_VALUE(r))
-		return r;
+		goto out;
 
 	r = omap_i2c_wait_for_bb(dev);
 	if (r < 0)
-- 
cgit v1.1


From ab5625c30a0a3c8a8491b641c939575c84bc0dbb Mon Sep 17 00:00:00 2001
From: Guenter Roeck <linux@roeck-us.net>
Date: Thu, 9 Aug 2012 08:47:20 -0700
Subject: i2c: diolan-u2c: Fix master_xfer return code

The master_xfer function returns 0 on success. It should return the number of
successful transactions.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
---
 drivers/i2c/busses/i2c-diolan-u2c.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers')

diff --git a/drivers/i2c/busses/i2c-diolan-u2c.c b/drivers/i2c/busses/i2c-diolan-u2c.c
index aedb94f..dae3ddfe 100644
--- a/drivers/i2c/busses/i2c-diolan-u2c.c
+++ b/drivers/i2c/busses/i2c-diolan-u2c.c
@@ -405,6 +405,7 @@ static int diolan_usb_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs,
 			}
 		}
 	}
+	ret = num;
 abort:
 	sret = diolan_i2c_stop(dev);
 	if (sret < 0 && ret >= 0)
-- 
cgit v1.1


From 371e67c9e1a82b5fd8110b9a25e36bbc3a99e8c7 Mon Sep 17 00:00:00 2001
From: Laxman Dewangan <ldewangan@nvidia.com>
Date: Sat, 18 Aug 2012 17:49:58 +0530
Subject: i2c: tegra: protect suspend/resume callbacks with CONFIG_PM_SLEEP

The CONFIG_PM doesn't actually enable any of the PM callbacks, it
only allows to enable CONFIG_PM_SLEEP and CONFIG_PM_RUNTIME.
This means if CONFIG_PM is used to protect system sleep callbacks
then it may end up unreferenced if only runtime PM is enabled.
Hence protecting sleep callbacks with CONFIG_PM_SLEEP.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
---
 drivers/i2c/busses/i2c-tegra.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 66eb53f..9a08c57 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -712,7 +712,7 @@ static int __devexit tegra_i2c_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int tegra_i2c_suspend(struct device *dev)
 {
 	struct tegra_i2c_dev *i2c_dev = dev_get_drvdata(dev);
-- 
cgit v1.1


From b817bf5c72774556345a9043c6b0c497cdcb7295 Mon Sep 17 00:00:00 2001
From: Thierry Reding <thierry.reding@avionic-design.de>
Date: Thu, 16 Aug 2012 08:01:21 +0200
Subject: pwm: Improve Kconfig help text

The Kconfig help text should help the user understand what functionality
is provided by an option. This is especially true for new subsystems. An
improved help text is provided by this commit in the hopes of clarifying
the usefulness of the PWM framework.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Borislav Petkov <bp@alien8.de>
---
 drivers/pwm/Kconfig | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)

(limited to 'drivers')

diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index 8fc3808..90c5c73 100644
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -1,12 +1,31 @@
 menuconfig PWM
-	bool "PWM Support"
+	bool "Pulse-Width Modulation (PWM) Support"
 	depends on !MACH_JZ4740 && !PUV3_PWM
 	help
-	  This enables PWM support through the generic PWM framework.
-	  You only need to enable this, if you also want to enable
-	  one or more of the PWM drivers below.
-
-	  If unsure, say N.
+	  Generic Pulse-Width Modulation (PWM) support.
+
+	  In Pulse-Width Modulation, a variation of the width of pulses
+	  in a rectangular pulse signal is used as a means to alter the
+	  average power of the signal. Applications include efficient
+	  power delivery and voltage regulation. In computer systems,
+	  PWMs are commonly used to control fans or the brightness of
+	  display backlights.
+
+	  This framework provides a generic interface to PWM devices
+	  within the Linux kernel. On the driver side it provides an API
+	  to register and unregister a PWM chip, an abstraction of a PWM
+	  controller, that supports one or more PWM devices. Client
+	  drivers can request PWM devices and use the generic framework
+	  to configure as well as enable and disable them.
+
+	  This generic framework replaces the legacy PWM framework which
+	  allows only a single driver implementing the required API. Not
+	  all legacy implementations have been ported to the framework
+	  yet. The framework provides an API that is backward compatible
+	  with the legacy framework so that existing client drivers
+	  continue to work as expected.
+
+	  If unsure, say no.
 
 if PWM
 
-- 
cgit v1.1


From 8b3d1cc213f96bfffb5b7808d859b9ad26149e82 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Tue, 19 Jun 2012 17:29:29 +0200
Subject: mac80211_hwsim: add support for P2P Device

Advertise support for P2P Device in hwsim
to be able to test it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/mac80211_hwsim.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index ed1386a..7bb032e 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -1734,6 +1734,7 @@ static const struct ieee80211_iface_limit hwsim_if_limits[] = {
 #endif
 				 BIT(NL80211_IFTYPE_AP) |
 				 BIT(NL80211_IFTYPE_P2P_GO) },
+	{ .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
 };
 
 static const struct ieee80211_iface_combination hwsim_if_comb = {
@@ -1820,7 +1821,8 @@ static int __init init_mac80211_hwsim(void)
 			BIT(NL80211_IFTYPE_P2P_CLIENT) |
 			BIT(NL80211_IFTYPE_P2P_GO) |
 			BIT(NL80211_IFTYPE_ADHOC) |
-			BIT(NL80211_IFTYPE_MESH_POINT);
+			BIT(NL80211_IFTYPE_MESH_POINT) |
+			BIT(NL80211_IFTYPE_P2P_DEVICE);
 
 		hw->flags = IEEE80211_HW_MFP_CAPABLE |
 			    IEEE80211_HW_SIGNAL_DBM |
-- 
cgit v1.1


From 5efcc76c13a745f98e7b6604d6aca49761be1970 Mon Sep 17 00:00:00 2001
From: Jerome Glisse <jglisse@redhat.com>
Date: Fri, 17 Aug 2012 14:40:04 -0400
Subject: drm/radeon: avoid turning off spread spectrum for used pll

If spread spectrum is enabled and in use for a given pll we
should not turn it off as it will lead to turning off display
for crtc that use the pll (this behavior was observed on chelsea
edp).

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Cc: stable@vger.kernel.org
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/radeon/atombios_crtc.c | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index c6fcb5b..cb18813 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -444,11 +444,28 @@ union atom_enable_ss {
 static void atombios_crtc_program_ss(struct radeon_device *rdev,
 				     int enable,
 				     int pll_id,
+				     int crtc_id,
 				     struct radeon_atom_ss *ss)
 {
+	unsigned i;
 	int index = GetIndexIntoMasterTable(COMMAND, EnableSpreadSpectrumOnPPLL);
 	union atom_enable_ss args;
 
+	if (!enable) {
+		for (i = 0; i < 6; i++) {
+			if (rdev->mode_info.crtcs[i] &&
+			    rdev->mode_info.crtcs[i]->enabled &&
+			    i != crtc_id &&
+			    pll_id == rdev->mode_info.crtcs[i]->pll_id) {
+				/* one other crtc is using this pll don't turn
+				 * off spread spectrum as it might turn off
+				 * display on active crtc
+				 */
+				return;
+			}
+		}
+	}
+
 	memset(&args, 0, sizeof(args));
 
 	if (ASIC_IS_DCE5(rdev)) {
@@ -1028,7 +1045,7 @@ static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode
 		radeon_compute_pll_legacy(pll, adjusted_clock, &pll_clock, &fb_div, &frac_fb_div,
 					  &ref_div, &post_div);
 
-	atombios_crtc_program_ss(rdev, ATOM_DISABLE, radeon_crtc->pll_id, &ss);
+	atombios_crtc_program_ss(rdev, ATOM_DISABLE, radeon_crtc->pll_id, radeon_crtc->crtc_id, &ss);
 
 	atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id,
 				  encoder_mode, radeon_encoder->encoder_id, mode->clock,
@@ -1051,7 +1068,7 @@ static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode
 			ss.step = step_size;
 		}
 
-		atombios_crtc_program_ss(rdev, ATOM_ENABLE, radeon_crtc->pll_id, &ss);
+		atombios_crtc_program_ss(rdev, ATOM_ENABLE, radeon_crtc->pll_id, radeon_crtc->crtc_id, &ss);
 	}
 }
 
@@ -1572,11 +1589,11 @@ void radeon_atom_disp_eng_pll_init(struct radeon_device *rdev)
 								   ASIC_INTERNAL_SS_ON_DCPLL,
 								   rdev->clock.default_dispclk);
 		if (ss_enabled)
-			atombios_crtc_program_ss(rdev, ATOM_DISABLE, ATOM_DCPLL, &ss);
+			atombios_crtc_program_ss(rdev, ATOM_DISABLE, ATOM_DCPLL, -1, &ss);
 		/* XXX: DCE5, make sure voltage, dispclk is high enough */
 		atombios_crtc_set_disp_eng_pll(rdev, rdev->clock.default_dispclk);
 		if (ss_enabled)
-			atombios_crtc_program_ss(rdev, ATOM_ENABLE, ATOM_DCPLL, &ss);
+			atombios_crtc_program_ss(rdev, ATOM_ENABLE, ATOM_DCPLL, -1, &ss);
 	}
 
 }
-- 
cgit v1.1


From 48c0ac9911839daf188e4a0b6b132ac31050a241 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <deathsimple@vodafone.de>
Date: Mon, 20 Aug 2012 15:38:47 +0200
Subject: drm/radeon: init lockup timeout on ring init
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Reset the lockup timeout on ring (re-)initialisation.

Otherwise we get error messages like this on gpu resets:
[ 1559.949177] radeon 0000:01:00.0: GPU lockup CP stall for more than 1482270msec

Signed-off-by: Christian König <deathsimple@vodafone.de>
cc: stable@vger.kernel.org
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
---
 drivers/gpu/drm/radeon/radeon_ring.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index ec79b37..43c431a 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -706,6 +706,7 @@ int radeon_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsig
 	if (radeon_debugfs_ring_init(rdev, ring)) {
 		DRM_ERROR("Failed to register debugfs file for rings !\n");
 	}
+	radeon_ring_lockup_update(ring);
 	return 0;
 }
 
-- 
cgit v1.1


From c116cc94969447f44fd7205a027084ceebe90d34 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= <maraeo@gmail.com>
Date: Sun, 19 Aug 2012 02:22:09 +0200
Subject: drm/radeon: allow CMASK and FMASK in the CS checker on r600-r700
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

MSAA is impossible without them.

Signed-off-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
---
 drivers/gpu/drm/radeon/r600_cs.c     | 94 +++++++++++++++++++++++++++++++-----
 drivers/gpu/drm/radeon/r600d.h       | 17 +++++++
 drivers/gpu/drm/radeon/radeon_drv.c  |  3 +-
 drivers/gpu/drm/radeon/reg_srcs/r600 |  8 ---
 4 files changed, 101 insertions(+), 21 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/radeon/r600_cs.c b/drivers/gpu/drm/radeon/r600_cs.c
index 3dab49c..1bec5b8 100644
--- a/drivers/gpu/drm/radeon/r600_cs.c
+++ b/drivers/gpu/drm/radeon/r600_cs.c
@@ -47,13 +47,17 @@ struct r600_cs_track {
 	u32			npipes;
 	/* value we track */
 	u32			sq_config;
+	u32			log_nsamples;
 	u32			nsamples;
 	u32			cb_color_base_last[8];
 	struct radeon_bo	*cb_color_bo[8];
 	u64			cb_color_bo_mc[8];
-	u32			cb_color_bo_offset[8];
-	struct radeon_bo	*cb_color_frag_bo[8]; /* unused */
-	struct radeon_bo	*cb_color_tile_bo[8]; /* unused */
+	u64			cb_color_bo_offset[8];
+	struct radeon_bo	*cb_color_frag_bo[8];
+	u64			cb_color_frag_offset[8];
+	struct radeon_bo	*cb_color_tile_bo[8];
+	u64			cb_color_tile_offset[8];
+	u32			cb_color_mask[8];
 	u32			cb_color_info[8];
 	u32			cb_color_view[8];
 	u32			cb_color_size_idx[8]; /* unused */
@@ -349,10 +353,6 @@ static int r600_cs_track_validate_cb(struct radeon_cs_parser *p, int i)
 	unsigned array_mode;
 	u32 format;
 
-	if (G_0280A0_TILE_MODE(track->cb_color_info[i])) {
-		dev_warn(p->dev, "FMASK or CMASK buffer are not supported by this kernel\n");
-		return -EINVAL;
-	}
 	size = radeon_bo_size(track->cb_color_bo[i]) - track->cb_color_bo_offset[i];
 	format = G_0280A0_FORMAT(track->cb_color_info[i]);
 	if (!r600_fmt_is_valid_color(format)) {
@@ -441,7 +441,7 @@ static int r600_cs_track_validate_cb(struct radeon_cs_parser *p, int i)
 			 * broken userspace.
 			 */
 		} else {
-			dev_warn(p->dev, "%s offset[%d] %d %d %d %lu too big (%d %d) (%d %d %d)\n",
+			dev_warn(p->dev, "%s offset[%d] %d %llu %d %lu too big (%d %d) (%d %d %d)\n",
 				 __func__, i, array_mode,
 				 track->cb_color_bo_offset[i], tmp,
 				 radeon_bo_size(track->cb_color_bo[i]),
@@ -458,6 +458,51 @@ static int r600_cs_track_validate_cb(struct radeon_cs_parser *p, int i)
 	tmp = S_028060_PITCH_TILE_MAX((pitch / 8) - 1) |
 		S_028060_SLICE_TILE_MAX(slice_tile_max - 1);
 	ib[track->cb_color_size_idx[i]] = tmp;
+
+	/* FMASK/CMASK */
+	switch (G_0280A0_TILE_MODE(track->cb_color_info[i])) {
+	case V_0280A0_TILE_DISABLE:
+		break;
+	case V_0280A0_FRAG_ENABLE:
+		if (track->nsamples > 1) {
+			uint32_t tile_max = G_028100_FMASK_TILE_MAX(track->cb_color_mask[i]);
+			/* the tile size is 8x8, but the size is in units of bits.
+			 * for bytes, do just * 8. */
+			uint32_t bytes = track->nsamples * track->log_nsamples * 8 * (tile_max + 1);
+
+			if (bytes + track->cb_color_frag_offset[i] >
+			    radeon_bo_size(track->cb_color_frag_bo[i])) {
+				dev_warn(p->dev, "%s FMASK_TILE_MAX too large "
+					 "(tile_max=%u, bytes=%u, offset=%llu, bo_size=%lu)\n",
+					 __func__, tile_max, bytes,
+					 track->cb_color_frag_offset[i],
+					 radeon_bo_size(track->cb_color_frag_bo[i]));
+				return -EINVAL;
+			}
+		}
+		/* fall through */
+	case V_0280A0_CLEAR_ENABLE:
+	{
+		uint32_t block_max = G_028100_CMASK_BLOCK_MAX(track->cb_color_mask[i]);
+		/* One block = 128x128 pixels, one 8x8 tile has 4 bits..
+		 * (128*128) / (8*8) / 2 = 128 bytes per block. */
+		uint32_t bytes = (block_max + 1) * 128;
+
+		if (bytes + track->cb_color_tile_offset[i] >
+		    radeon_bo_size(track->cb_color_tile_bo[i])) {
+			dev_warn(p->dev, "%s CMASK_BLOCK_MAX too large "
+				 "(block_max=%u, bytes=%u, offset=%llu, bo_size=%lu)\n",
+				 __func__, block_max, bytes,
+				 track->cb_color_tile_offset[i],
+				 radeon_bo_size(track->cb_color_tile_bo[i]));
+			return -EINVAL;
+		}
+		break;
+	}
+	default:
+		dev_warn(p->dev, "%s invalid tile mode\n", __func__);
+		return -EINVAL;
+	}
 	return 0;
 }
 
@@ -1231,6 +1276,7 @@ static int r600_cs_check_reg(struct radeon_cs_parser *p, u32 reg, u32 idx)
 		break;
 	case R_028C04_PA_SC_AA_CONFIG:
 		tmp = G_028C04_MSAA_NUM_SAMPLES(radeon_get_ib_value(p, idx));
+		track->log_nsamples = tmp;
 		track->nsamples = 1 << tmp;
 		track->cb_dirty = true;
 		break;
@@ -1312,16 +1358,21 @@ static int r600_cs_check_reg(struct radeon_cs_parser *p, u32 reg, u32 idx)
 				dev_err(p->dev, "Broken old userspace ? no cb_color0_base supplied before trying to write 0x%08X\n", reg);
 				return -EINVAL;
 			}
-			ib[idx] = track->cb_color_base_last[tmp];
 			track->cb_color_frag_bo[tmp] = track->cb_color_bo[tmp];
+			track->cb_color_frag_offset[tmp] = track->cb_color_bo_offset[tmp];
+			ib[idx] = track->cb_color_base_last[tmp];
 		} else {
 			r = r600_cs_packet_next_reloc(p, &reloc);
 			if (r) {
 				dev_err(p->dev, "bad SET_CONTEXT_REG 0x%04X\n", reg);
 				return -EINVAL;
 			}
-			ib[idx] += (u32)((reloc->lobj.gpu_offset >> 8) & 0xffffffff);
 			track->cb_color_frag_bo[tmp] = reloc->robj;
+			track->cb_color_frag_offset[tmp] = (u64)ib[idx] << 8;
+			ib[idx] += (u32)((reloc->lobj.gpu_offset >> 8) & 0xffffffff);
+		}
+		if (G_0280A0_TILE_MODE(track->cb_color_info[tmp])) {
+			track->cb_dirty = true;
 		}
 		break;
 	case R_0280C0_CB_COLOR0_TILE:
@@ -1338,16 +1389,35 @@ static int r600_cs_check_reg(struct radeon_cs_parser *p, u32 reg, u32 idx)
 				dev_err(p->dev, "Broken old userspace ? no cb_color0_base supplied before trying to write 0x%08X\n", reg);
 				return -EINVAL;
 			}
-			ib[idx] = track->cb_color_base_last[tmp];
 			track->cb_color_tile_bo[tmp] = track->cb_color_bo[tmp];
+			track->cb_color_tile_offset[tmp] = track->cb_color_bo_offset[tmp];
+			ib[idx] = track->cb_color_base_last[tmp];
 		} else {
 			r = r600_cs_packet_next_reloc(p, &reloc);
 			if (r) {
 				dev_err(p->dev, "bad SET_CONTEXT_REG 0x%04X\n", reg);
 				return -EINVAL;
 			}
-			ib[idx] += (u32)((reloc->lobj.gpu_offset >> 8) & 0xffffffff);
 			track->cb_color_tile_bo[tmp] = reloc->robj;
+			track->cb_color_tile_offset[tmp] = (u64)ib[idx] << 8;
+			ib[idx] += (u32)((reloc->lobj.gpu_offset >> 8) & 0xffffffff);
+		}
+		if (G_0280A0_TILE_MODE(track->cb_color_info[tmp])) {
+			track->cb_dirty = true;
+		}
+		break;
+	case R_028100_CB_COLOR0_MASK:
+	case R_028104_CB_COLOR1_MASK:
+	case R_028108_CB_COLOR2_MASK:
+	case R_02810C_CB_COLOR3_MASK:
+	case R_028110_CB_COLOR4_MASK:
+	case R_028114_CB_COLOR5_MASK:
+	case R_028118_CB_COLOR6_MASK:
+	case R_02811C_CB_COLOR7_MASK:
+		tmp = (reg - R_028100_CB_COLOR0_MASK) / 4;
+		track->cb_color_mask[tmp] = ib[idx];
+		if (G_0280A0_TILE_MODE(track->cb_color_info[tmp])) {
+			track->cb_dirty = true;
 		}
 		break;
 	case CB_COLOR0_BASE:
diff --git a/drivers/gpu/drm/radeon/r600d.h b/drivers/gpu/drm/radeon/r600d.h
index fd328f4..bdb69a6 100644
--- a/drivers/gpu/drm/radeon/r600d.h
+++ b/drivers/gpu/drm/radeon/r600d.h
@@ -92,6 +92,20 @@
 #define R_028094_CB_COLOR5_VIEW                      0x028094
 #define R_028098_CB_COLOR6_VIEW                      0x028098
 #define R_02809C_CB_COLOR7_VIEW                      0x02809C
+#define R_028100_CB_COLOR0_MASK                      0x028100
+#define   S_028100_CMASK_BLOCK_MAX(x)                  (((x) & 0xFFF) << 0)
+#define   G_028100_CMASK_BLOCK_MAX(x)                  (((x) >> 0) & 0xFFF)
+#define   C_028100_CMASK_BLOCK_MAX                     0xFFFFF000
+#define   S_028100_FMASK_TILE_MAX(x)                   (((x) & 0xFFFFF) << 12)
+#define   G_028100_FMASK_TILE_MAX(x)                   (((x) >> 12) & 0xFFFFF)
+#define   C_028100_FMASK_TILE_MAX                      0x00000FFF
+#define R_028104_CB_COLOR1_MASK                      0x028104
+#define R_028108_CB_COLOR2_MASK                      0x028108
+#define R_02810C_CB_COLOR3_MASK                      0x02810C
+#define R_028110_CB_COLOR4_MASK                      0x028110
+#define R_028114_CB_COLOR5_MASK                      0x028114
+#define R_028118_CB_COLOR6_MASK                      0x028118
+#define R_02811C_CB_COLOR7_MASK                      0x02811C
 #define CB_COLOR0_INFO                                  0x280a0
 #	define CB_FORMAT(x)				((x) << 2)
 #       define CB_ARRAY_MODE(x)                         ((x) << 8)
@@ -1400,6 +1414,9 @@
 #define   S_0280A0_TILE_MODE(x)                        (((x) & 0x3) << 18)
 #define   G_0280A0_TILE_MODE(x)                        (((x) >> 18) & 0x3)
 #define   C_0280A0_TILE_MODE                           0xFFF3FFFF
+#define     V_0280A0_TILE_DISABLE			0
+#define     V_0280A0_CLEAR_ENABLE			1
+#define     V_0280A0_FRAG_ENABLE			2
 #define   S_0280A0_BLEND_CLAMP(x)                      (((x) & 0x1) << 20)
 #define   G_0280A0_BLEND_CLAMP(x)                      (((x) >> 20) & 0x1)
 #define   C_0280A0_BLEND_CLAMP                         0xFFEFFFFF
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index d7269f4..27d22d7 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -62,9 +62,10 @@
  *   2.18.0 - r600-eg: allow "invalid" DB formats
  *   2.19.0 - r600-eg: MSAA textures
  *   2.20.0 - r600-si: RADEON_INFO_TIMESTAMP query
+ *   2.21.0 - r600-r700: FMASK and CMASK
  */
 #define KMS_DRIVER_MAJOR	2
-#define KMS_DRIVER_MINOR	20
+#define KMS_DRIVER_MINOR	21
 #define KMS_DRIVER_PATCHLEVEL	0
 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags);
 int radeon_driver_unload_kms(struct drm_device *dev);
diff --git a/drivers/gpu/drm/radeon/reg_srcs/r600 b/drivers/gpu/drm/radeon/reg_srcs/r600
index 5e659b0..f93e45d 100644
--- a/drivers/gpu/drm/radeon/reg_srcs/r600
+++ b/drivers/gpu/drm/radeon/reg_srcs/r600
@@ -744,14 +744,6 @@ r600 0x9400
 0x00028C38 CB_CLRCMP_DST
 0x00028C3C CB_CLRCMP_MSK
 0x00028C34 CB_CLRCMP_SRC
-0x00028100 CB_COLOR0_MASK
-0x00028104 CB_COLOR1_MASK
-0x00028108 CB_COLOR2_MASK
-0x0002810C CB_COLOR3_MASK
-0x00028110 CB_COLOR4_MASK
-0x00028114 CB_COLOR5_MASK
-0x00028118 CB_COLOR6_MASK
-0x0002811C CB_COLOR7_MASK
 0x00028808 CB_COLOR_CONTROL
 0x0002842C CB_FOG_BLUE
 0x00028428 CB_FOG_GREEN
-- 
cgit v1.1


From fcdeefe4df5c0fa457f2dc181ef4e3b2b26de781 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= <maraeo@gmail.com>
Date: Sun, 19 Aug 2012 21:23:26 +0200
Subject: drm/radeon: fix checking of MSAA renderbuffers on r600-r700
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The MSAA checking was mostly unimplemented on r600-r700. The userspace
submits GPU commands and the kernel driver computes how much memory
the GPU will access and checks if it's all within buffer bounds the
userspace allocated. This patch fixes the computations of the size of
MSAA surfaces in memory.

Signed-off-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/radeon/r600_cs.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/radeon/r600_cs.c b/drivers/gpu/drm/radeon/r600_cs.c
index 1bec5b8..ab74e6b 100644
--- a/drivers/gpu/drm/radeon/r600_cs.c
+++ b/drivers/gpu/drm/radeon/r600_cs.c
@@ -420,7 +420,8 @@ static int r600_cs_track_validate_cb(struct radeon_cs_parser *p, int i)
 	}
 
 	/* check offset */
-	tmp = r600_fmt_get_nblocksy(format, height) * r600_fmt_get_nblocksx(format, pitch) * r600_fmt_get_blocksize(format);
+	tmp = r600_fmt_get_nblocksy(format, height) * r600_fmt_get_nblocksx(format, pitch) *
+	      r600_fmt_get_blocksize(format) * track->nsamples;
 	switch (array_mode) {
 	default:
 	case V_0280A0_ARRAY_LINEAR_GENERAL:
@@ -611,7 +612,7 @@ static int r600_cs_track_validate_db(struct radeon_cs_parser *p)
 
 		ntiles = G_028000_SLICE_TILE_MAX(track->db_depth_size) + 1;
 		nviews = G_028004_SLICE_MAX(track->db_depth_view) + 1;
-		tmp = ntiles * bpe * 64 * nviews;
+		tmp = ntiles * bpe * 64 * nviews * track->nsamples;
 		if ((tmp + track->db_offset) > radeon_bo_size(track->db_bo)) {
 			dev_warn(p->dev, "z/stencil buffer (%d) too small (0x%08X %d %d %d -> %u have %lu)\n",
 					array_mode,
@@ -1562,7 +1563,7 @@ unsigned r600_mip_minify(unsigned size, unsigned level)
 }
 
 static void r600_texture_size(unsigned nfaces, unsigned blevel, unsigned llevel,
-			      unsigned w0, unsigned h0, unsigned d0, unsigned format,
+			      unsigned w0, unsigned h0, unsigned d0, unsigned nsamples, unsigned format,
 			      unsigned block_align, unsigned height_align, unsigned base_align,
 			      unsigned *l0_size, unsigned *mipmap_size)
 {
@@ -1590,7 +1591,7 @@ static void r600_texture_size(unsigned nfaces, unsigned blevel, unsigned llevel,
 
 		depth = r600_mip_minify(d0, i);
 
-		size = nbx * nby * blocksize;
+		size = nbx * nby * blocksize * nsamples;
 		if (nfaces)
 			size *= nfaces;
 		else
@@ -1742,7 +1743,7 @@ static int r600_check_texture_resource(struct radeon_cs_parser *p,  u32 idx,
 
 		nfaces = larray - barray + 1;
 	}
-	r600_texture_size(nfaces, blevel, llevel, w0, h0, d0, format,
+	r600_texture_size(nfaces, blevel, llevel, w0, h0, d0, array_check.nsamples, format,
 			  pitch_align, height_align, base_align,
 			  &l0_size, &mipmap_size);
 	/* using get ib will give us the offset into the texture bo */
-- 
cgit v1.1


From 52e9b39d9a89ae33662596bd30e62dd56bddbe73 Mon Sep 17 00:00:00 2001
From: Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk>
Date: Mon, 20 Aug 2012 15:16:04 +0100
Subject: drm/radeon/kms: extend the Fujitsu D3003-S2 board connector quirk to
 cover later silicon stepping

There is a more recent APU stepping with a new PCI ID
shipping in the same board by Fujitsu which needs the
same quirk to correctly mark the back plane connectors.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
 drivers/gpu/drm/radeon/radeon_atombios.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index f9c21f9..d67d4f3 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -452,7 +452,7 @@ static bool radeon_atom_apply_quirks(struct drm_device *dev,
 	}
 
 	/* Fujitsu D3003-S2 board lists DVI-I as DVI-D and VGA */
-	if ((dev->pdev->device == 0x9802) &&
+	if (((dev->pdev->device == 0x9802) || (dev->pdev->device == 0x9806)) &&
 	    (dev->pdev->subsystem_vendor == 0x1734) &&
 	    (dev->pdev->subsystem_device == 0x11bd)) {
 		if (*connector_type == DRM_MODE_CONNECTOR_VGA) {
-- 
cgit v1.1


From 268ba0a99f89a84dc5eb312470896113d0709c74 Mon Sep 17 00:00:00 2001
From: David Lamparter <equinox@diac24.net>
Date: Thu, 16 Aug 2012 15:45:20 -0400
Subject: drm/radeon: implement ACPI VFCT vbios fetch (v3)

This is required for pure UEFI systems.  The vbios is stored
in ACPI rather than at the legacy vga location.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=26891

V2: fix #ifdefs as per Greg's comments
V3: fix it harder

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Cc: stable@vger.kernel.org
---
 drivers/gpu/drm/radeon/radeon_bios.c | 60 ++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index 501f488..a32232f 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -32,6 +32,7 @@
 
 #include <linux/vga_switcheroo.h>
 #include <linux/slab.h>
+#include <linux/acpi.h>
 /*
  * BIOS.
  */
@@ -476,6 +477,63 @@ static bool radeon_read_disabled_bios(struct radeon_device *rdev)
 		return legacy_read_disabled_bios(rdev);
 }
 
+#ifdef CONFIG_ACPI
+static bool radeon_acpi_vfct_bios(struct radeon_device *rdev)
+{
+	bool ret = false;
+	struct acpi_table_header *hdr;
+	/* acpi_get_table_with_size is not exported :( */
+	acpi_size tbl_size = 0x7fffffff;
+	UEFI_ACPI_VFCT *vfct;
+	GOP_VBIOS_CONTENT *vbios;
+	VFCT_IMAGE_HEADER *vhdr;
+
+	if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr)))
+		return false;
+	if (tbl_size < sizeof(UEFI_ACPI_VFCT)) {
+		DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n");
+		goto out_unmap;
+	}
+
+	vfct = (UEFI_ACPI_VFCT *)hdr;
+	if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) > tbl_size) {
+		DRM_ERROR("ACPI VFCT table present but broken (too short #2)\n");
+		goto out_unmap;
+	}
+
+	vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + vfct->VBIOSImageOffset);
+	vhdr = &vbios->VbiosHeader;
+	DRM_INFO("ACPI VFCT contains a BIOS for %02x:%02x.%d %04x:%04x, size %d\n",
+			vhdr->PCIBus, vhdr->PCIDevice, vhdr->PCIFunction,
+			vhdr->VendorID, vhdr->DeviceID, vhdr->ImageLength);
+
+	if (vhdr->PCIBus != rdev->pdev->bus->number ||
+	    vhdr->PCIDevice != PCI_SLOT(rdev->pdev->devfn) ||
+	    vhdr->PCIFunction != PCI_FUNC(rdev->pdev->devfn) ||
+	    vhdr->VendorID != rdev->pdev->vendor ||
+	    vhdr->DeviceID != rdev->pdev->device) {
+		DRM_INFO("ACPI VFCT table is not for this card\n");
+		goto out_unmap;
+	};
+
+	if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) + vhdr->ImageLength > tbl_size) {
+		DRM_ERROR("ACPI VFCT image truncated\n");
+		goto out_unmap;
+	}
+
+	rdev->bios = kmemdup(&vbios->VbiosContent, vhdr->ImageLength, GFP_KERNEL);
+	ret = !!rdev->bios;
+
+out_unmap:
+	/* uh, no idea what to do here... */
+	return ret;
+}
+#else
+static inline bool radeon_acpi_vfct_bios(struct radeon_device *rdev)
+{
+	return false;
+}
+#endif
 
 bool radeon_get_bios(struct radeon_device *rdev)
 {
@@ -484,6 +542,8 @@ bool radeon_get_bios(struct radeon_device *rdev)
 
 	r = radeon_atrm_get_bios(rdev);
 	if (r == false)
+		r = radeon_acpi_vfct_bios(rdev);
+	if (r == false)
 		r = igp_read_bios_from_vram(rdev);
 	if (r == false)
 		r = radeon_read_bios(rdev);
-- 
cgit v1.1


From 4f81f986761a7663db7d24d24cd6ae68008f1fc2 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Mon, 20 Aug 2012 10:57:22 -0400
Subject: ACPI: export symbol acpi_get_table_with_size

We need it in the radeon drm module to fetch
and verify the vbios image on UEFI systems.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
 drivers/acpi/acpica/tbxface.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers')

diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
index ea4c6d5..29e51bc 100644
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -387,6 +387,7 @@ acpi_get_table_with_size(char *signature,
 
 	return (AE_NOT_FOUND);
 }
+ACPI_EXPORT_SYMBOL(acpi_get_table_with_size)
 
 acpi_status
 acpi_get_table(char *signature,
-- 
cgit v1.1


From 7c3906d04a4587dceaa78cc1ae6b14e6454ee02a Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Mon, 20 Aug 2012 11:06:21 -0400
Subject: drm/radeon: convert radeon vfct code to use acpi_get_table_with_size

Allows us to verify the table size.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
 drivers/gpu/drm/radeon/radeon_bios.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index a32232f..ab0b2f7 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -482,13 +482,12 @@ static bool radeon_acpi_vfct_bios(struct radeon_device *rdev)
 {
 	bool ret = false;
 	struct acpi_table_header *hdr;
-	/* acpi_get_table_with_size is not exported :( */
-	acpi_size tbl_size = 0x7fffffff;
+	acpi_size tbl_size;
 	UEFI_ACPI_VFCT *vfct;
 	GOP_VBIOS_CONTENT *vbios;
 	VFCT_IMAGE_HEADER *vhdr;
 
-	if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr)))
+	if (!ACPI_SUCCESS(acpi_get_table_with_size("VFCT", 1, &hdr, &tbl_size)))
 		return false;
 	if (tbl_size < sizeof(UEFI_ACPI_VFCT)) {
 		DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n");
@@ -525,7 +524,6 @@ static bool radeon_acpi_vfct_bios(struct radeon_device *rdev)
 	ret = !!rdev->bios;
 
 out_unmap:
-	/* uh, no idea what to do here... */
 	return ret;
 }
 #else
-- 
cgit v1.1


From c61e2775873f603148e8e998a938721b7d222d24 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 16 Aug 2012 15:39:09 -0400
Subject: drm/radeon: split ATRM support out from the ATPX handler (v3)

There are systems that use ATRM, but not ATPX.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=41265

V2: fix #ifdefs as per Greg's comments
V3: fix it harder

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
 drivers/gpu/drm/radeon/radeon.h              | 15 ------
 drivers/gpu/drm/radeon/radeon_atpx_handler.c | 56 +------------------
 drivers/gpu/drm/radeon/radeon_bios.c         | 80 ++++++++++++++++++++++++++--
 3 files changed, 77 insertions(+), 74 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 9930419..59a1531 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -142,21 +142,6 @@ struct radeon_device;
 /*
  * BIOS.
  */
-#define ATRM_BIOS_PAGE 4096
-
-#if defined(CONFIG_VGA_SWITCHEROO)
-bool radeon_atrm_supported(struct pci_dev *pdev);
-int radeon_atrm_get_bios_chunk(uint8_t *bios, int offset, int len);
-#else
-static inline bool radeon_atrm_supported(struct pci_dev *pdev)
-{
-	return false;
-}
-
-static inline int radeon_atrm_get_bios_chunk(uint8_t *bios, int offset, int len){
-	return -EINVAL;
-}
-#endif
 bool radeon_get_bios(struct radeon_device *rdev);
 
 /*
diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
index 98724fc..2a2cf0b 100644
--- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c
+++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
@@ -30,57 +30,8 @@ static struct radeon_atpx_priv {
 	/* handle for device - and atpx */
 	acpi_handle dhandle;
 	acpi_handle atpx_handle;
-	acpi_handle atrm_handle;
 } radeon_atpx_priv;
 
-/* retrieve the ROM in 4k blocks */
-static int radeon_atrm_call(acpi_handle atrm_handle, uint8_t *bios,
-			    int offset, int len)
-{
-	acpi_status status;
-	union acpi_object atrm_arg_elements[2], *obj;
-	struct acpi_object_list atrm_arg;
-	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
-
-	atrm_arg.count = 2;
-	atrm_arg.pointer = &atrm_arg_elements[0];
-
-	atrm_arg_elements[0].type = ACPI_TYPE_INTEGER;
-	atrm_arg_elements[0].integer.value = offset;
-
-	atrm_arg_elements[1].type = ACPI_TYPE_INTEGER;
-	atrm_arg_elements[1].integer.value = len;
-
-	status = acpi_evaluate_object(atrm_handle, NULL, &atrm_arg, &buffer);
-	if (ACPI_FAILURE(status)) {
-		printk("failed to evaluate ATRM got %s\n", acpi_format_exception(status));
-		return -ENODEV;
-	}
-
-	obj = (union acpi_object *)buffer.pointer;
-	memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length);
-	len = obj->buffer.length;
-	kfree(buffer.pointer);
-	return len;
-}
-
-bool radeon_atrm_supported(struct pci_dev *pdev)
-{
-	/* get the discrete ROM only via ATRM */
-	if (!radeon_atpx_priv.atpx_detected)
-		return false;
-
-	if (radeon_atpx_priv.dhandle == DEVICE_ACPI_HANDLE(&pdev->dev))
-		return false;
-	return true;
-}
-
-
-int radeon_atrm_get_bios_chunk(uint8_t *bios, int offset, int len)
-{
-	return radeon_atrm_call(radeon_atpx_priv.atrm_handle, bios, offset, len);
-}
-
 static int radeon_atpx_get_version(acpi_handle handle)
 {
 	acpi_status status;
@@ -198,7 +149,7 @@ static int radeon_atpx_power_state(enum vga_switcheroo_client_id id,
 
 static bool radeon_atpx_pci_probe_handle(struct pci_dev *pdev)
 {
-	acpi_handle dhandle, atpx_handle, atrm_handle;
+	acpi_handle dhandle, atpx_handle;
 	acpi_status status;
 
 	dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
@@ -209,13 +160,8 @@ static bool radeon_atpx_pci_probe_handle(struct pci_dev *pdev)
 	if (ACPI_FAILURE(status))
 		return false;
 
-	status = acpi_get_handle(dhandle, "ATRM", &atrm_handle);
-	if (ACPI_FAILURE(status))
-		return false;
-
 	radeon_atpx_priv.dhandle = dhandle;
 	radeon_atpx_priv.atpx_handle = atpx_handle;
-	radeon_atpx_priv.atrm_handle = atrm_handle;
 	return true;
 }
 
diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index ab0b2f7..d306cc8 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -99,16 +99,81 @@ static bool radeon_read_bios(struct radeon_device *rdev)
 	return true;
 }
 
+#ifdef CONFIG_ACPI
 /* ATRM is used to get the BIOS on the discrete cards in
  * dual-gpu systems.
  */
+/* retrieve the ROM in 4k blocks */
+#define ATRM_BIOS_PAGE 4096
+/**
+ * radeon_atrm_call - fetch a chunk of the vbios
+ *
+ * @atrm_handle: acpi ATRM handle
+ * @bios: vbios image pointer
+ * @offset: offset of vbios image data to fetch
+ * @len: length of vbios image data to fetch
+ *
+ * Executes ATRM to fetch a chunk of the discrete
+ * vbios image on PX systems (all asics).
+ * Returns the length of the buffer fetched.
+ */
+static int radeon_atrm_call(acpi_handle atrm_handle, uint8_t *bios,
+			    int offset, int len)
+{
+	acpi_status status;
+	union acpi_object atrm_arg_elements[2], *obj;
+	struct acpi_object_list atrm_arg;
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
+
+	atrm_arg.count = 2;
+	atrm_arg.pointer = &atrm_arg_elements[0];
+
+	atrm_arg_elements[0].type = ACPI_TYPE_INTEGER;
+	atrm_arg_elements[0].integer.value = offset;
+
+	atrm_arg_elements[1].type = ACPI_TYPE_INTEGER;
+	atrm_arg_elements[1].integer.value = len;
+
+	status = acpi_evaluate_object(atrm_handle, NULL, &atrm_arg, &buffer);
+	if (ACPI_FAILURE(status)) {
+		printk("failed to evaluate ATRM got %s\n", acpi_format_exception(status));
+		return -ENODEV;
+	}
+
+	obj = (union acpi_object *)buffer.pointer;
+	memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length);
+	len = obj->buffer.length;
+	kfree(buffer.pointer);
+	return len;
+}
+
 static bool radeon_atrm_get_bios(struct radeon_device *rdev)
 {
 	int ret;
 	int size = 256 * 1024;
 	int i;
+	struct pci_dev *pdev = NULL;
+	acpi_handle dhandle, atrm_handle;
+	acpi_status status;
+	bool found = false;
 
-	if (!radeon_atrm_supported(rdev->pdev))
+	/* ATRM is for the discrete card only */
+	if (rdev->flags & RADEON_IS_IGP)
+		return false;
+
+	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
+		dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
+		if (!dhandle)
+			continue;
+
+		status = acpi_get_handle(dhandle, "ATRM", &atrm_handle);
+		if (!ACPI_FAILURE(status)) {
+			found = true;
+			break;
+		}
+	}
+
+	if (!found)
 		return false;
 
 	rdev->bios = kmalloc(size, GFP_KERNEL);
@@ -118,9 +183,10 @@ static bool radeon_atrm_get_bios(struct radeon_device *rdev)
 	}
 
 	for (i = 0; i < size / ATRM_BIOS_PAGE; i++) {
-		ret = radeon_atrm_get_bios_chunk(rdev->bios,
-						 (i * ATRM_BIOS_PAGE),
-						 ATRM_BIOS_PAGE);
+		ret = radeon_atrm_call(atrm_handle,
+				       rdev->bios,
+				       (i * ATRM_BIOS_PAGE),
+				       ATRM_BIOS_PAGE);
 		if (ret < ATRM_BIOS_PAGE)
 			break;
 	}
@@ -131,6 +197,12 @@ static bool radeon_atrm_get_bios(struct radeon_device *rdev)
 	}
 	return true;
 }
+#else
+static inline bool radeon_atrm_get_bios(struct radeon_device *rdev)
+{
+	return false;
+}
+#endif
 
 static bool ni_read_disabled_bios(struct radeon_device *rdev)
 {
-- 
cgit v1.1


From 1ee9ae3244c4789f3184c5123f3b2d7e405b3f4c Mon Sep 17 00:00:00 2001
From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed, 15 Aug 2012 10:41:45 +0200
Subject: drm/i915: use hsw rps tuning values everywhere on gen6+

James Bottomley reported [1] a massive power regression, due to the
enabling of semaphores by default in 3.5. A workaround for him is to
again disable semaphores. And indeed, his system has a very hard time
to enter rc6 with semaphores enabled.

Ben Widawsky run around with a kill-a-watt a lot and noticed:
- There are indeed a few rare systems that seem to have a hard time
  entering rc6 when desktop-idle.
- One machine, The Indestructible Toshiba regressed in this behaviour
  between 3.5 and 3.6 in a merge commit! So rc6 behaviour with the
  current setting seems to be highly timing dependent and not robust
  at all.
- The behaviour James reported wrt semaphores seems to be a freak
  timing thing that only happens on his specific machine, confirming
  that enabling semaphores shouldn't reduce rc6 residency.

Now furthermore the Google ChromeOS guys reported [2] a while ago that
at least on some machines a simply a blinking cursor can keep the gpu
turbo at the highest frequency. This is because the current rps limits
used on snb/ivb are highly asymmetric.

On the theory that gpu turbo and rc6 tuning values are related, we've
tried whether the much saner looking (since much less asymmetric) rps
tuning values used for hsw would also help entering rc6 more robustly.

And it seems to mostly work, and we don't really have the resources to
through-roughly tune things in any better way: The values from the
ChromeOS ppl seem to fare a bit worse for James' machine, so I guess
we better stick with something vpg (the gpu hw/windows group)
provided, hoping that they've done their jobs.

Reference[1]: http://lists.freedesktop.org/archives/dri-devel/2012-July/025675.html
Reference[2]: http://lists.freedesktop.org/archives/intel-gfx/2012-July/018692.html
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=53393
Tested-by: Ben Widawsky <ben@bwidawsk.net>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/intel_pm.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 58c07cd..1881c8c 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2441,17 +2441,10 @@ static void gen6_enable_rps(struct drm_device *dev)
 		   dev_priv->max_delay << 24 |
 		   dev_priv->min_delay << 16);
 
-	if (IS_HASWELL(dev)) {
-		I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400);
-		I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000);
-		I915_WRITE(GEN6_RP_UP_EI, 66000);
-		I915_WRITE(GEN6_RP_DOWN_EI, 350000);
-	} else {
-		I915_WRITE(GEN6_RP_UP_THRESHOLD, 10000);
-		I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 1000000);
-		I915_WRITE(GEN6_RP_UP_EI, 100000);
-		I915_WRITE(GEN6_RP_DOWN_EI, 5000000);
-	}
+	I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400);
+	I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000);
+	I915_WRITE(GEN6_RP_UP_EI, 66000);
+	I915_WRITE(GEN6_RP_DOWN_EI, 350000);
 
 	I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
 	I915_WRITE(GEN6_RP_CONTROL,
-- 
cgit v1.1


From 6de7145ca3db231a84b7516a6cb25878da6ebb19 Mon Sep 17 00:00:00 2001
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: Sat, 18 Aug 2012 15:44:09 -0700
Subject: tcm_vhost: Fix vhost_scsi_target structure alignment

Here TRANSPORT_IQN_LEN is 224, which is a multiple of 4.
Since vhost_tpgt is 2 bytes and abi_version is 4, the total size would
be 230.  But gcc needs struct size be aligned to first field size, which
is 4 bytes, so it pads the structure by extra 2 bytes to the total of
232.

This padding is very undesirable in an ABI:
- it can not be initialized easily
- it can not be checked easily
- it can leak information between kernel and userspace

Simplest solution is probably just to make the padding
explicit.

(v2: Add check for zero'ed backend->reserved field for VHOST_SCSI_SET_ENDPOINT
     and VHOST_SCSI_CLEAR_ENDPOINT ops as requested by MST)

Reported-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
 drivers/vhost/tcm_vhost.c | 4 ++++
 drivers/vhost/tcm_vhost.h | 1 +
 2 files changed, 5 insertions(+)

(limited to 'drivers')

diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c
index 74b2eda..ed8e2e6 100644
--- a/drivers/vhost/tcm_vhost.c
+++ b/drivers/vhost/tcm_vhost.c
@@ -995,11 +995,15 @@ static long vhost_scsi_ioctl(struct file *f, unsigned int ioctl,
 	case VHOST_SCSI_SET_ENDPOINT:
 		if (copy_from_user(&backend, argp, sizeof backend))
 			return -EFAULT;
+		if (backend.reserved != 0)
+			return -EOPNOTSUPP;
 
 		return vhost_scsi_set_endpoint(vs, &backend);
 	case VHOST_SCSI_CLEAR_ENDPOINT:
 		if (copy_from_user(&backend, argp, sizeof backend))
 			return -EFAULT;
+		if (backend.reserved != 0)
+			return -EOPNOTSUPP;
 
 		return vhost_scsi_clear_endpoint(vs, &backend);
 	case VHOST_SCSI_GET_ABI_VERSION:
diff --git a/drivers/vhost/tcm_vhost.h b/drivers/vhost/tcm_vhost.h
index e9d5c02..d9e9355 100644
--- a/drivers/vhost/tcm_vhost.h
+++ b/drivers/vhost/tcm_vhost.h
@@ -93,6 +93,7 @@ struct vhost_scsi_target {
 	int abi_version;
 	char vhost_wwpn[TRANSPORT_IQN_LEN];
 	unsigned short vhost_tpgt;
+	unsigned short reserved;
 };
 
 /* VHOST_SCSI specific defines */
-- 
cgit v1.1


From 08a16208c8cb2ce1f79fea24f21dd7a8df4f12b6 Mon Sep 17 00:00:00 2001
From: Denis Efremov <yefremov.denis@gmail.com>
Date: Sat, 18 Aug 2012 16:10:31 +0400
Subject: tcm_fc: rcu_deref outside rcu lock/unlock section

Use rcu_dereference_protected in order to prevent lockdep
complaint. Sequel of the patch 863555be

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Denis Efremov <yefremov.denis@gmail.com>
Acked-by: Mark D. Rustad <mark.d.rustad@intel.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
 drivers/target/tcm_fc/tfc_sess.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/target/tcm_fc/tfc_sess.c b/drivers/target/tcm_fc/tfc_sess.c
index 87901fa..3c9e5b5 100644
--- a/drivers/target/tcm_fc/tfc_sess.c
+++ b/drivers/target/tcm_fc/tfc_sess.c
@@ -456,7 +456,9 @@ static void ft_prlo(struct fc_rport_priv *rdata)
 	struct ft_tport *tport;
 
 	mutex_lock(&ft_lport_lock);
-	tport = rcu_dereference(rdata->local_port->prov[FC_TYPE_FCP]);
+	tport = rcu_dereference_protected(rdata->local_port->prov[FC_TYPE_FCP],
+					  lockdep_is_held(&ft_lport_lock));
+
 	if (!tport) {
 		mutex_unlock(&ft_lport_lock);
 		return;
-- 
cgit v1.1


From 676bc2e1e4f9072f7a640d5b7c99ffdf9709a6e7 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Tue, 21 Aug 2012 09:55:01 -0400
Subject: Revert "drm/radeon: fix bo creation retry path"

This reverts commit d1c7871ddb1f588b8eb35affd9ee1a3d5e11cd0c.

ttm_bo_init() destroys the BO on failure. So this patch makes
the retry path work with freed memory.  This ends up causing
kernel panics when this path is hit.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
 drivers/gpu/drm/radeon/radeon_object.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 1cb014b..9024e72 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -132,6 +132,7 @@ int radeon_bo_create(struct radeon_device *rdev,
 	acc_size = ttm_bo_dma_acc_size(&rdev->mman.bdev, size,
 				       sizeof(struct radeon_bo));
 
+retry:
 	bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL);
 	if (bo == NULL)
 		return -ENOMEM;
@@ -145,8 +146,6 @@ int radeon_bo_create(struct radeon_device *rdev,
 	bo->surface_reg = -1;
 	INIT_LIST_HEAD(&bo->list);
 	INIT_LIST_HEAD(&bo->va);
-
-retry:
 	radeon_ttm_placement_from_domain(bo, domain);
 	/* Kernel allocation are uninterruptible */
 	down_read(&rdev->pm.mclk_lock);
-- 
cgit v1.1


From 289e5501c3141191dd830957f1d764d3dc14a54f Mon Sep 17 00:00:00 2001
From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Sun, 5 Aug 2012 16:55:06 +0300
Subject: iwlwifi: fix the preparation of the card

There is no need to check if the ownership has been
relinquished but we should rather try to get it in a
loop.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/iwlwifi/pcie/trans.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index f981b73..f76efac 100644
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -897,6 +897,7 @@ static int iwl_set_hw_ready(struct iwl_trans *trans)
 static int iwl_prepare_card_hw(struct iwl_trans *trans)
 {
 	int ret;
+	int t = 0;
 
 	IWL_DEBUG_INFO(trans, "iwl_trans_prepare_card_hw enter\n");
 
@@ -909,17 +910,15 @@ static int iwl_prepare_card_hw(struct iwl_trans *trans)
 	iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
 		    CSR_HW_IF_CONFIG_REG_PREPARE);
 
-	ret = iwl_poll_bit(trans, CSR_HW_IF_CONFIG_REG,
-			   ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
-			   CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
+	do {
+		ret = iwl_set_hw_ready(trans);
+		if (ret >= 0)
+			return 0;
 
-	if (ret < 0)
-		return ret;
+		usleep_range(200, 1000);
+		t += 200;
+	} while (t < 150000);
 
-	/* HW should be ready by now, check again. */
-	ret = iwl_set_hw_ready(trans);
-	if (ret >= 0)
-		return 0;
 	return ret;
 }
 
-- 
cgit v1.1


From 40503f7b48260a91ab65a4f8b00a2c6f004fa807 Mon Sep 17 00:00:00 2001
From: Amit Beka <amit.beka@intel.com>
Date: Mon, 6 Aug 2012 17:01:05 +0300
Subject: iwlwifi: fix FW restart on init FW

When unregistered with mac80211, we can't call its functionality
for FW restart, so avoid it and prevent automatic FW restart for
the init firmware.

Signed-off-by: Amit Beka <amit.beka@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/iwlwifi/dvm/main.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/iwlwifi/dvm/main.c b/drivers/net/wireless/iwlwifi/dvm/main.c
index ab7b9ed..7ff3f14 100644
--- a/drivers/net/wireless/iwlwifi/dvm/main.c
+++ b/drivers/net/wireless/iwlwifi/dvm/main.c
@@ -862,7 +862,8 @@ void iwl_down(struct iwl_priv *priv)
 	 * No race since we hold the mutex here and a new one
 	 * can't come in at this time.
 	 */
-	ieee80211_remain_on_channel_expired(priv->hw);
+	if (priv->ucode_loaded && priv->cur_ucode != IWL_UCODE_INIT)
+		ieee80211_remain_on_channel_expired(priv->hw);
 
 	exit_pending =
 		test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
@@ -994,7 +995,11 @@ static void iwl_bg_restart(struct work_struct *data)
 		iwlagn_prepare_restart(priv);
 		mutex_unlock(&priv->mutex);
 		iwl_cancel_deferred_work(priv);
-		ieee80211_restart_hw(priv->hw);
+		if (priv->mac80211_registered)
+			ieee80211_restart_hw(priv->hw);
+		else
+			IWL_ERR(priv,
+				"Cannot request restart before registrating with mac80211");
 	} else {
 		WARN_ON(1);
 	}
-- 
cgit v1.1


From 3a245cbef6a9e4398456bd733b0b4b7cb3f11994 Mon Sep 17 00:00:00 2001
From: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Date: Wed, 15 Aug 2012 22:48:35 +0200
Subject: ath5k: fix wrong max power per rate eeprom reads for 802.11a

This patch reduces the per rate target power eeprom reads for
AR5K_EEPROM_MODE_11A from 10 to 8, as there are only 8 valid
power curve entries on the eeprom. The former 10 reads lead to
equal max power limits per rate and this causes an increasing
distortion for all rates above 24 MBit and leads to a needless
poor performance in 802.11a mode.

Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/ath/ath5k/eeprom.c | 2 +-
 drivers/net/wireless/ath/ath5k/eeprom.h | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/ath/ath5k/eeprom.c b/drivers/net/wireless/ath/ath5k/eeprom.c
index 4026c90..b7e0258 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.c
+++ b/drivers/net/wireless/ath/ath5k/eeprom.c
@@ -1482,7 +1482,7 @@ ath5k_eeprom_read_target_rate_pwr_info(struct ath5k_hw *ah, unsigned int mode)
 	case AR5K_EEPROM_MODE_11A:
 		offset += AR5K_EEPROM_TARGET_PWR_OFF_11A(ee->ee_version);
 		rate_pcal_info = ee->ee_rate_tpwr_a;
-		ee->ee_rate_target_pwr_num[mode] = AR5K_EEPROM_N_5GHZ_CHAN;
+		ee->ee_rate_target_pwr_num[mode] = AR5K_EEPROM_N_5GHZ_RATE_CHAN;
 		break;
 	case AR5K_EEPROM_MODE_11B:
 		offset += AR5K_EEPROM_TARGET_PWR_OFF_11B(ee->ee_version);
diff --git a/drivers/net/wireless/ath/ath5k/eeprom.h b/drivers/net/wireless/ath/ath5k/eeprom.h
index dc2bcfe..94a9bbe 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.h
+++ b/drivers/net/wireless/ath/ath5k/eeprom.h
@@ -182,6 +182,7 @@
 #define AR5K_EEPROM_EEP_DELTA		10
 #define AR5K_EEPROM_N_MODES		3
 #define AR5K_EEPROM_N_5GHZ_CHAN		10
+#define AR5K_EEPROM_N_5GHZ_RATE_CHAN	8
 #define AR5K_EEPROM_N_2GHZ_CHAN		3
 #define AR5K_EEPROM_N_2GHZ_CHAN_2413	4
 #define	AR5K_EEPROM_N_2GHZ_CHAN_MAX	4
-- 
cgit v1.1


From 7b4e6cfbae304177b8edc0c12341b4896cab3f2d Mon Sep 17 00:00:00 2001
From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Sun, 19 Aug 2012 11:49:58 +0200
Subject: drivers/net/wireless/ipw2x00/ipw2100.c: introduce missing
 initialization

The result of one call to a function is tested, and then at the second call
to the same function, the previous result, and not the current result, is
tested again.

Also changed &bssid to bssid, at the suggestion of Stanislav Yakovlev.

The semantic match that finds the first problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression ret;
identifier f;
statement S1,S2;
@@

*ret = f(...);
if (\(ret != 0\|ret < 0\|ret == NULL\)) S1
... when any
*f(...);
if (\(ret != 0\|ret < 0\|ret == NULL\)) S2
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/ipw2x00/ipw2100.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/ipw2x00/ipw2100.c b/drivers/net/wireless/ipw2x00/ipw2100.c
index 95aa8e1..83324b3 100644
--- a/drivers/net/wireless/ipw2x00/ipw2100.c
+++ b/drivers/net/wireless/ipw2x00/ipw2100.c
@@ -2042,7 +2042,8 @@ static void isr_indicate_associated(struct ipw2100_priv *priv, u32 status)
 		return;
 	}
 	len = ETH_ALEN;
-	ipw2100_get_ordinal(priv, IPW_ORD_STAT_ASSN_AP_BSSID, &bssid, &len);
+	ret = ipw2100_get_ordinal(priv, IPW_ORD_STAT_ASSN_AP_BSSID, bssid,
+				  &len);
 	if (ret) {
 		IPW_DEBUG_INFO("failed querying ordinals at line %d\n",
 			       __LINE__);
-- 
cgit v1.1


From 94543a8d4fb302817014981489f15cb3b92ec3c2 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Tue, 21 Aug 2012 18:57:10 +0200
Subject: iwlwifi: fix flow handler debug code

iwl_dbgfs_fh_reg_read() can cause crashes and/or
BUG_ON in slub because the ifdefs are wrong, the
code in iwl_dump_fh() should use DEBUGFS, not
DEBUG to protect the buffer writing code.

Also, while at it, clean up the arguments to the
function, some code and make it generally safer.

Cc: stable@vger.kernel.org
Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/iwlwifi/pcie/internal.h |  2 +-
 drivers/net/wireless/iwlwifi/pcie/rx.c       |  2 +-
 drivers/net/wireless/iwlwifi/pcie/trans.c    | 30 +++++++++++++++-------------
 3 files changed, 18 insertions(+), 16 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/iwlwifi/pcie/internal.h b/drivers/net/wireless/iwlwifi/pcie/internal.h
index d9694c5..4ffc18d 100644
--- a/drivers/net/wireless/iwlwifi/pcie/internal.h
+++ b/drivers/net/wireless/iwlwifi/pcie/internal.h
@@ -350,7 +350,7 @@ int iwl_queue_space(const struct iwl_queue *q);
 /*****************************************************
 * Error handling
 ******************************************************/
-int iwl_dump_fh(struct iwl_trans *trans, char **buf, bool display);
+int iwl_dump_fh(struct iwl_trans *trans, char **buf);
 void iwl_dump_csr(struct iwl_trans *trans);
 
 /*****************************************************
diff --git a/drivers/net/wireless/iwlwifi/pcie/rx.c b/drivers/net/wireless/iwlwifi/pcie/rx.c
index 39a6ca1..d1a61ba 100644
--- a/drivers/net/wireless/iwlwifi/pcie/rx.c
+++ b/drivers/net/wireless/iwlwifi/pcie/rx.c
@@ -555,7 +555,7 @@ static void iwl_irq_handle_error(struct iwl_trans *trans)
 	}
 
 	iwl_dump_csr(trans);
-	iwl_dump_fh(trans, NULL, false);
+	iwl_dump_fh(trans, NULL);
 
 	iwl_op_mode_nic_error(trans->op_mode);
 }
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index 939c2f7..1e86ea2 100644
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -1649,13 +1649,9 @@ static const char *get_fh_string(int cmd)
 #undef IWL_CMD
 }
 
-int iwl_dump_fh(struct iwl_trans *trans, char **buf, bool display)
+int iwl_dump_fh(struct iwl_trans *trans, char **buf)
 {
 	int i;
-#ifdef CONFIG_IWLWIFI_DEBUG
-	int pos = 0;
-	size_t bufsz = 0;
-#endif
 	static const u32 fh_tbl[] = {
 		FH_RSCSR_CHNL0_STTS_WPTR_REG,
 		FH_RSCSR_CHNL0_RBDCB_BASE_REG,
@@ -1667,29 +1663,35 @@ int iwl_dump_fh(struct iwl_trans *trans, char **buf, bool display)
 		FH_TSSR_TX_STATUS_REG,
 		FH_TSSR_TX_ERROR_REG
 	};
-#ifdef CONFIG_IWLWIFI_DEBUG
-	if (display) {
-		bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	if (buf) {
+		int pos = 0;
+		size_t bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
+
 		*buf = kmalloc(bufsz, GFP_KERNEL);
 		if (!*buf)
 			return -ENOMEM;
+
 		pos += scnprintf(*buf + pos, bufsz - pos,
 				"FH register values:\n");
-		for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
+
+		for (i = 0; i < ARRAY_SIZE(fh_tbl); i++)
 			pos += scnprintf(*buf + pos, bufsz - pos,
 				"  %34s: 0X%08x\n",
 				get_fh_string(fh_tbl[i]),
 				iwl_read_direct32(trans, fh_tbl[i]));
-		}
+
 		return pos;
 	}
 #endif
+
 	IWL_ERR(trans, "FH register values:\n");
-	for (i = 0; i <  ARRAY_SIZE(fh_tbl); i++) {
+	for (i = 0; i <  ARRAY_SIZE(fh_tbl); i++)
 		IWL_ERR(trans, "  %34s: 0X%08x\n",
 			get_fh_string(fh_tbl[i]),
 			iwl_read_direct32(trans, fh_tbl[i]));
-	}
+
 	return 0;
 }
 
@@ -1982,11 +1984,11 @@ static ssize_t iwl_dbgfs_fh_reg_read(struct file *file,
 				     size_t count, loff_t *ppos)
 {
 	struct iwl_trans *trans = file->private_data;
-	char *buf;
+	char *buf = NULL;
 	int pos = 0;
 	ssize_t ret = -EFAULT;
 
-	ret = pos = iwl_dump_fh(trans, &buf, true);
+	ret = pos = iwl_dump_fh(trans, &buf);
 	if (buf) {
 		ret = simple_read_from_buffer(user_buf,
 					      count, ppos, buf, pos);
-- 
cgit v1.1


From 4fc79db178f0a0ede479b4713e00df2d106028b3 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Tue, 21 Aug 2012 18:57:11 +0200
Subject: iwlwifi: protect SRAM debugfs

If the device is not started, we can't read its
SRAM and attempting to do so will cause issues.
Protect the debugfs read.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/iwlwifi/dvm/debugfs.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/wireless/iwlwifi/dvm/debugfs.c b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
index 46782f1..a47b306 100644
--- a/drivers/net/wireless/iwlwifi/dvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
@@ -124,6 +124,9 @@ static ssize_t iwl_dbgfs_sram_read(struct file *file,
 	const struct fw_img *img;
 	size_t bufsz;
 
+	if (!iwl_is_ready_rf(priv))
+		return -EAGAIN;
+
 	/* default is to dump the entire data segment */
 	if (!priv->dbgfs_sram_offset && !priv->dbgfs_sram_len) {
 		priv->dbgfs_sram_offset = 0x800000;
-- 
cgit v1.1


From d57ef3a6a2eeb88df47e892c66692e3f59722ffe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Fri, 10 Aug 2012 21:23:53 +0200
Subject: bcma: detect and register serial flash device
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/bcma/Kconfig                    |   2 +-
 drivers/bcma/bcma_private.h             |   1 +
 drivers/bcma/driver_chipcommon_sflash.c | 123 +++++++++++++++++++++++++++++++-
 drivers/bcma/main.c                     |   9 +++
 4 files changed, 131 insertions(+), 4 deletions(-)

(limited to 'drivers')

diff --git a/drivers/bcma/Kconfig b/drivers/bcma/Kconfig
index 06b3207a..cf6e4dd 100644
--- a/drivers/bcma/Kconfig
+++ b/drivers/bcma/Kconfig
@@ -48,7 +48,7 @@ config BCMA_DRIVER_MIPS
 
 config BCMA_SFLASH
 	bool
-	depends on BCMA_DRIVER_MIPS && BROKEN
+	depends on BCMA_DRIVER_MIPS
 	default y
 
 config BCMA_NFLASH
diff --git a/drivers/bcma/bcma_private.h b/drivers/bcma/bcma_private.h
index 3cf9cc9..94bf07c 100644
--- a/drivers/bcma/bcma_private.h
+++ b/drivers/bcma/bcma_private.h
@@ -54,6 +54,7 @@ u32 bcma_pmu_get_clockcpu(struct bcma_drv_cc *cc);
 #ifdef CONFIG_BCMA_SFLASH
 /* driver_chipcommon_sflash.c */
 int bcma_sflash_init(struct bcma_drv_cc *cc);
+extern struct platform_device bcma_sflash_dev;
 #else
 static inline int bcma_sflash_init(struct bcma_drv_cc *cc)
 {
diff --git a/drivers/bcma/driver_chipcommon_sflash.c b/drivers/bcma/driver_chipcommon_sflash.c
index 6e157a5..2c4eec2 100644
--- a/drivers/bcma/driver_chipcommon_sflash.c
+++ b/drivers/bcma/driver_chipcommon_sflash.c
@@ -5,15 +5,132 @@
  * Licensed under the GNU/GPL. See COPYING for details.
  */
 
+#include <linux/platform_device.h>
 #include <linux/bcma/bcma.h>
-#include <linux/bcma/bcma_driver_chipcommon.h>
-#include <linux/delay.h>
 
 #include "bcma_private.h"
 
+static struct resource bcma_sflash_resource = {
+	.name	= "bcma_sflash",
+	.start	= BCMA_SFLASH,
+	.end	= 0,
+	.flags  = IORESOURCE_MEM | IORESOURCE_READONLY,
+};
+
+struct platform_device bcma_sflash_dev = {
+	.name		= "bcma_sflash",
+	.resource	= &bcma_sflash_resource,
+	.num_resources	= 1,
+};
+
+struct bcma_sflash_tbl_e {
+	char *name;
+	u32 id;
+	u32 blocksize;
+	u16 numblocks;
+};
+
+static struct bcma_sflash_tbl_e bcma_sflash_st_tbl[] = {
+	{ "", 0x14, 0x10000, 32, },
+	{ 0 },
+};
+
+static struct bcma_sflash_tbl_e bcma_sflash_sst_tbl[] = {
+	{ 0 },
+};
+
+static struct bcma_sflash_tbl_e bcma_sflash_at_tbl[] = {
+	{ 0 },
+};
+
+static void bcma_sflash_cmd(struct bcma_drv_cc *cc, u32 opcode)
+{
+	int i;
+	bcma_cc_write32(cc, BCMA_CC_FLASHCTL,
+			BCMA_CC_FLASHCTL_START | opcode);
+	for (i = 0; i < 1000; i++) {
+		if (!(bcma_cc_read32(cc, BCMA_CC_FLASHCTL) &
+		      BCMA_CC_FLASHCTL_BUSY))
+			return;
+		cpu_relax();
+	}
+	bcma_err(cc->core->bus, "SFLASH control command failed (timeout)!\n");
+}
+
 /* Initialize serial flash access */
 int bcma_sflash_init(struct bcma_drv_cc *cc)
 {
-	bcma_err(cc->core->bus, "Serial flash support is broken\n");
+	struct bcma_bus *bus = cc->core->bus;
+	struct bcma_sflash *sflash = &cc->sflash;
+	struct bcma_sflash_tbl_e *e;
+	u32 id, id2;
+
+	switch (cc->capabilities & BCMA_CC_CAP_FLASHT) {
+	case BCMA_CC_FLASHT_STSER:
+		bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_DP);
+
+		bcma_cc_write32(cc, BCMA_CC_FLASHADDR, 0);
+		bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_RES);
+		id = bcma_cc_read32(cc, BCMA_CC_FLASHDATA);
+
+		bcma_cc_write32(cc, BCMA_CC_FLASHADDR, 1);
+		bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_RES);
+		id2 = bcma_cc_read32(cc, BCMA_CC_FLASHDATA);
+
+		switch (id) {
+		case 0xbf:
+			for (e = bcma_sflash_sst_tbl; e->name; e++) {
+				if (e->id == id2)
+					break;
+			}
+			break;
+		default:
+			for (e = bcma_sflash_st_tbl; e->name; e++) {
+				if (e->id == id)
+					break;
+			}
+			break;
+		}
+		if (!e->name) {
+			bcma_err(bus, "Unsupported ST serial flash (id: 0x%X, id2: 0x%X)\n", id, id2);
+			return -ENOTSUPP;
+		}
+
+		break;
+	case BCMA_CC_FLASHT_ATSER:
+		bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_AT_STATUS);
+		id = bcma_cc_read32(cc, BCMA_CC_FLASHDATA) & 0x3c;
+
+		for (e = bcma_sflash_at_tbl; e->name; e++) {
+			if (e->id == id)
+				break;
+		}
+		if (!e->name) {
+			bcma_err(bus, "Unsupported Atmel serial flash (id: 0x%X)\n", id);
+			return -ENOTSUPP;
+		}
+
+		break;
+	default:
+		bcma_err(bus, "Unsupported flash type\n");
+		return -ENOTSUPP;
+	}
+
+	sflash->window = BCMA_SFLASH;
+	sflash->blocksize = e->blocksize;
+	sflash->numblocks = e->numblocks;
+	sflash->size = sflash->blocksize * sflash->numblocks;
+	sflash->present = true;
+
+	bcma_info(bus, "Found %s serial flash (size: %dKiB, blocksize: 0x%X, blocks: %d)\n",
+		  e->name, sflash->size / 1024, sflash->blocksize,
+		  sflash->numblocks);
+
+	/* Prepare platform device, but don't register it yet. It's too early,
+	 * malloc (required by device_private_init) is not available yet. */
+	bcma_sflash_dev.resource[0].end = bcma_sflash_dev.resource[0].start +
+					  sflash->size;
+	bcma_sflash_dev.dev.platform_data = sflash;
+
 	return 0;
 }
diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c
index 758af9c..a501d25 100644
--- a/drivers/bcma/main.c
+++ b/drivers/bcma/main.c
@@ -7,6 +7,7 @@
 
 #include "bcma_private.h"
 #include <linux/module.h>
+#include <linux/platform_device.h>
 #include <linux/bcma/bcma.h>
 #include <linux/slab.h>
 
@@ -136,6 +137,14 @@ static int bcma_register_cores(struct bcma_bus *bus)
 		dev_id++;
 	}
 
+#ifdef CONFIG_BCMA_SFLASH
+	if (bus->drv_cc.sflash.present) {
+		err = platform_device_register(&bcma_sflash_dev);
+		if (err)
+			bcma_err(bus, "Error registering serial flash\n");
+	}
+#endif
+
 	return 0;
 }
 
-- 
cgit v1.1


From 371a00448f95adaa612cf1a0b31a11e7093bc706 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Sun, 12 Aug 2012 13:08:05 +0200
Subject: bcma: detect and register NAND flash device
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/bcma/Kconfig                    |  2 +-
 drivers/bcma/bcma_private.h             |  1 +
 drivers/bcma/driver_chipcommon_nflash.c | 28 +++++++++++++++++++++++++---
 drivers/bcma/main.c                     |  8 ++++++++
 4 files changed, 35 insertions(+), 4 deletions(-)

(limited to 'drivers')

diff --git a/drivers/bcma/Kconfig b/drivers/bcma/Kconfig
index cf6e4dd..a533af2 100644
--- a/drivers/bcma/Kconfig
+++ b/drivers/bcma/Kconfig
@@ -53,7 +53,7 @@ config BCMA_SFLASH
 
 config BCMA_NFLASH
 	bool
-	depends on BCMA_DRIVER_MIPS && BROKEN
+	depends on BCMA_DRIVER_MIPS
 	default y
 
 config BCMA_DRIVER_GMAC_CMN
diff --git a/drivers/bcma/bcma_private.h b/drivers/bcma/bcma_private.h
index 94bf07c..169fc58 100644
--- a/drivers/bcma/bcma_private.h
+++ b/drivers/bcma/bcma_private.h
@@ -66,6 +66,7 @@ static inline int bcma_sflash_init(struct bcma_drv_cc *cc)
 #ifdef CONFIG_BCMA_NFLASH
 /* driver_chipcommon_nflash.c */
 int bcma_nflash_init(struct bcma_drv_cc *cc);
+extern struct platform_device bcma_nflash_dev;
 #else
 static inline int bcma_nflash_init(struct bcma_drv_cc *cc)
 {
diff --git a/drivers/bcma/driver_chipcommon_nflash.c b/drivers/bcma/driver_chipcommon_nflash.c
index 574d624..9042781 100644
--- a/drivers/bcma/driver_chipcommon_nflash.c
+++ b/drivers/bcma/driver_chipcommon_nflash.c
@@ -5,15 +5,37 @@
  * Licensed under the GNU/GPL. See COPYING for details.
  */
 
+#include <linux/platform_device.h>
 #include <linux/bcma/bcma.h>
-#include <linux/bcma/bcma_driver_chipcommon.h>
-#include <linux/delay.h>
 
 #include "bcma_private.h"
 
+struct platform_device bcma_nflash_dev = {
+	.name		= "bcma_nflash",
+	.num_resources	= 0,
+};
+
 /* Initialize NAND flash access */
 int bcma_nflash_init(struct bcma_drv_cc *cc)
 {
-	bcma_err(cc->core->bus, "NAND flash support is broken\n");
+	struct bcma_bus *bus = cc->core->bus;
+
+	if (bus->chipinfo.id != BCMA_CHIP_ID_BCM4706 &&
+	    cc->core->id.rev != 0x38) {
+		bcma_err(bus, "NAND flash on unsupported board!\n");
+		return -ENOTSUPP;
+	}
+
+	if (!(cc->capabilities & BCMA_CC_CAP_NFLASH)) {
+		bcma_err(bus, "NAND flash not present according to ChipCommon\n");
+		return -ENODEV;
+	}
+
+	cc->nflash.present = true;
+
+	/* Prepare platform device, but don't register it yet. It's too early,
+	 * malloc (required by device_private_init) is not available yet. */
+	bcma_nflash_dev.dev.platform_data = &cc->nflash;
+
 	return 0;
 }
diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c
index a501d25..a8f570d 100644
--- a/drivers/bcma/main.c
+++ b/drivers/bcma/main.c
@@ -145,6 +145,14 @@ static int bcma_register_cores(struct bcma_bus *bus)
 	}
 #endif
 
+#ifdef CONFIG_BCMA_NFLASH
+	if (bus->drv_cc.nflash.present) {
+		err = platform_device_register(&bcma_nflash_dev);
+		if (err)
+			bcma_err(bus, "Error registering NAND flash\n");
+	}
+#endif
+
 	return 0;
 }
 
-- 
cgit v1.1


From 6957802944ec8244cdcfbf50ffbfccf8eceaa413 Mon Sep 17 00:00:00 2001
From: Antonio Quartulli <ordex@autistici.org>
Date: Sun, 12 Aug 2012 19:36:41 +0200
Subject: ath9k_htc: implement sta_rc_update() mac80211 callback

In case of changes in the supported rates set for a given station, it is now
possible to use this callback to update the current internal state of the
station in the htc driver.

Reported-by: Gui Iribarren <gui@altermundi.net>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/ath/ath9k/htc_drv_main.c | 29 +++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
index 8a0ccf7..c32f6e3 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -1333,6 +1333,34 @@ static int ath9k_htc_sta_remove(struct ieee80211_hw *hw,
 	return ret;
 }
 
+static void ath9k_htc_sta_rc_update(struct ieee80211_hw *hw,
+				    struct ieee80211_vif *vif,
+				    struct ieee80211_sta *sta, u32 changed)
+{
+	struct ath9k_htc_priv *priv = hw->priv;
+	struct ath_common *common = ath9k_hw_common(priv->ah);
+	struct ath9k_htc_target_rate trate;
+
+	mutex_lock(&priv->mutex);
+	ath9k_htc_ps_wakeup(priv);
+
+	if (changed & IEEE80211_RC_SUPP_RATES_CHANGED) {
+		memset(&trate, 0, sizeof(struct ath9k_htc_target_rate));
+		ath9k_htc_setup_rate(priv, sta, &trate);
+		if (!ath9k_htc_send_rate_cmd(priv, &trate))
+			ath_dbg(common, CONFIG,
+				"Supported rates for sta: %pM updated, rate caps: 0x%X\n",
+				sta->addr, be32_to_cpu(trate.capflags));
+		else
+			ath_dbg(common, CONFIG,
+				"Unable to update supported rates for sta: %pM\n",
+				sta->addr);
+	}
+
+	ath9k_htc_ps_restore(priv);
+	mutex_unlock(&priv->mutex);
+}
+
 static int ath9k_htc_conf_tx(struct ieee80211_hw *hw,
 			     struct ieee80211_vif *vif, u16 queue,
 			     const struct ieee80211_tx_queue_params *params)
@@ -1760,6 +1788,7 @@ struct ieee80211_ops ath9k_htc_ops = {
 	.sta_add            = ath9k_htc_sta_add,
 	.sta_remove         = ath9k_htc_sta_remove,
 	.conf_tx            = ath9k_htc_conf_tx,
+	.sta_rc_update      = ath9k_htc_sta_rc_update,
 	.bss_info_changed   = ath9k_htc_bss_info_changed,
 	.set_key            = ath9k_htc_set_key,
 	.get_tsf            = ath9k_htc_get_tsf,
-- 
cgit v1.1


From 33dd7699cefd175c3a5d3d6077db9c8d8322c9a7 Mon Sep 17 00:00:00 2001
From: Christian Lamparter <chunkeey@googlemail.com>
Date: Tue, 31 Jul 2012 21:12:16 +0000
Subject: carl9170: report A-MPDU status

Because the hardware reports whenever an frame
was either at the start, in the middle or at
the end of a A-MPDU, we can easily report the
information for radiotap.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/ath/carl9170/carl9170.h |  1 +
 drivers/net/wireless/ath/carl9170/rx.c       | 15 +++++++++++----
 2 files changed, 12 insertions(+), 4 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/ath/carl9170/carl9170.h b/drivers/net/wireless/ath/carl9170/carl9170.h
index 8f0cbc3..2aa4a59 100644
--- a/drivers/net/wireless/ath/carl9170/carl9170.h
+++ b/drivers/net/wireless/ath/carl9170/carl9170.h
@@ -425,6 +425,7 @@ struct ar9170 {
 	bool rx_has_plcp;
 	struct sk_buff *rx_failover;
 	int rx_failover_missing;
+	u32 ampdu_ref;
 
 	/* FIFO for collecting outstanding BlockAckRequest */
 	struct list_head bar_list[__AR9170_NUM_TXQ];
diff --git a/drivers/net/wireless/ath/carl9170/rx.c b/drivers/net/wireless/ath/carl9170/rx.c
index b813f43..a0b7230 100644
--- a/drivers/net/wireless/ath/carl9170/rx.c
+++ b/drivers/net/wireless/ath/carl9170/rx.c
@@ -624,7 +624,8 @@ static void carl9170_ba_check(struct ar9170 *ar, void *data, unsigned int len)
 #undef TID_CHECK
 }
 
-static bool carl9170_ampdu_check(struct ar9170 *ar, u8 *buf, u8 ms)
+static bool carl9170_ampdu_check(struct ar9170 *ar, u8 *buf, u8 ms,
+				 struct ieee80211_rx_status *rx_status)
 {
 	__le16 fc;
 
@@ -637,6 +638,9 @@ static bool carl9170_ampdu_check(struct ar9170 *ar, u8 *buf, u8 ms)
 		return true;
 	}
 
+	rx_status->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN;
+	rx_status->ampdu_reference = ar->ampdu_ref;
+
 	/*
 	 * "802.11n - 7.4a.3 A-MPDU contents" describes in which contexts
 	 * certain frame types can be part of an aMPDU.
@@ -685,12 +689,15 @@ static void carl9170_handle_mpdu(struct ar9170 *ar, u8 *buf, int len)
 	if (unlikely(len < sizeof(*mac)))
 		goto drop;
 
+	memset(&status, 0, sizeof(status));
+
 	mpdu_len = len - sizeof(*mac);
 
 	mac = (void *)(buf + mpdu_len);
 	mac_status = mac->status;
 	switch (mac_status & AR9170_RX_STATUS_MPDU) {
 	case AR9170_RX_STATUS_MPDU_FIRST:
+		ar->ampdu_ref++;
 		/* Aggregated MPDUs start with an PLCP header */
 		if (likely(mpdu_len >= sizeof(struct ar9170_rx_head))) {
 			head = (void *) buf;
@@ -721,12 +728,13 @@ static void carl9170_handle_mpdu(struct ar9170 *ar, u8 *buf, int len)
 		break;
 
 	case AR9170_RX_STATUS_MPDU_LAST:
+		status.flag |= RX_FLAG_AMPDU_IS_LAST;
+
 		/*
 		 * The last frame of an A-MPDU has an extra tail
 		 * which does contain the phy status of the whole
 		 * aggregate.
 		 */
-
 		if (likely(mpdu_len >= sizeof(struct ar9170_rx_phystatus))) {
 			mpdu_len -= sizeof(struct ar9170_rx_phystatus);
 			phy = (void *)(buf + mpdu_len);
@@ -774,11 +782,10 @@ static void carl9170_handle_mpdu(struct ar9170 *ar, u8 *buf, int len)
 	if (unlikely(mpdu_len < (2 + 2 + ETH_ALEN + FCS_LEN)))
 		goto drop;
 
-	memset(&status, 0, sizeof(status));
 	if (unlikely(carl9170_rx_mac_status(ar, head, mac, &status)))
 		goto drop;
 
-	if (!carl9170_ampdu_check(ar, buf, mac_status))
+	if (!carl9170_ampdu_check(ar, buf, mac_status, &status))
 		goto drop;
 
 	if (phy)
-- 
cgit v1.1


From af74115eed22698f771fec1287a864975c9a6671 Mon Sep 17 00:00:00 2001
From: Roland Dreier <roland@purestorage.com>
Date: Wed, 15 Aug 2012 21:24:52 -0700
Subject: target: Remove unused se_cmd.cmd_spdtl

This was originally for helping fabrics to determine overflow/underflow
status, and has been superceeded by SCF_OVERFLOW_BIT + SCF_UNDERFLOW_BIT.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
 drivers/target/target_core_transport.c | 2 --
 1 file changed, 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index ea9a3d2..4de3186dc 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1165,8 +1165,6 @@ int target_cmd_size_check(struct se_cmd *cmd, unsigned int size)
 			" 0x%02x\n", cmd->se_tfo->get_fabric_name(),
 				cmd->data_length, size, cmd->t_task_cdb[0]);
 
-		cmd->cmd_spdtl = size;
-
 		if (cmd->data_direction == DMA_TO_DEVICE) {
 			pr_err("Rejecting underflow/overflow"
 					" WRITE data\n");
-- 
cgit v1.1


From 5317670692f61675394db2eb6713484b67383750 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Tue, 21 Aug 2012 18:52:56 -0400
Subject: drm/radeon/ss: use num_crtc rather than hardcoded 6

When checking if a pll is in use.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
 drivers/gpu/drm/radeon/atombios_crtc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index cb18813..f4d4505 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -452,7 +452,7 @@ static void atombios_crtc_program_ss(struct radeon_device *rdev,
 	union atom_enable_ss args;
 
 	if (!enable) {
-		for (i = 0; i < 6; i++) {
+		for (i = 0; i < rdev->num_crtc; i++) {
 			if (rdev->mode_info.crtcs[i] &&
 			    rdev->mode_info.crtcs[i]->enabled &&
 			    i != crtc_id &&
-- 
cgit v1.1


From f5869a8308f77e3dfdc2e3640842b285aa788ff8 Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@linux.intel.com>
Date: Mon, 20 Aug 2012 14:44:52 +0000
Subject: drm: stop vmgfx driver explosion

If you do a page flip with no flags set then event is NULL. If event is
NULL then the vmw_gfx driver likes to go digging into NULL and extracts
NULL->base.file_priv.

On a modern kernel with NULL mapping protection it's just another oops,
without it there are some "intriguing" possibilities.

What it should do is an open question but that for the driver owners to
sort out.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 6b0078f..c50724b 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -1688,15 +1688,19 @@ int vmw_du_page_flip(struct drm_crtc *crtc,
 	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 	struct drm_framebuffer *old_fb = crtc->fb;
 	struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(fb);
-	struct drm_file *file_priv = event->base.file_priv;
+	struct drm_file *file_priv ;
 	struct vmw_fence_obj *fence = NULL;
 	struct drm_clip_rect clips;
 	int ret;
 
+	if (event == NULL)
+		return -EINVAL;
+
 	/* require ScreenObject support for page flipping */
 	if (!dev_priv->sou_priv)
 		return -ENOSYS;
 
+	file_priv = event->base.file_priv;
 	if (!vmw_kms_screen_object_flippable(dev_priv, crtc))
 		return -EINVAL;
 
-- 
cgit v1.1


From 04ccfe77f132b973659f11954443214659014072 Mon Sep 17 00:00:00 2001
From: Damien Lespiau <damien.lespiau@intel.com>
Date: Fri, 17 Aug 2012 14:20:02 +0000
Subject: drm: Remove two unused fields from struct drm_display_mode

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
 drivers/gpu/drm/drm_modes.c | 3 ---
 1 file changed, 3 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index b7adb4a..28637c1 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -706,9 +706,6 @@ void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags)
 	p->crtc_vblank_end = max(p->crtc_vsync_end, p->crtc_vtotal);
 	p->crtc_hblank_start = min(p->crtc_hsync_start, p->crtc_hdisplay);
 	p->crtc_hblank_end = max(p->crtc_hsync_end, p->crtc_htotal);
-
-	p->crtc_hadjusted = false;
-	p->crtc_vadjusted = false;
 }
 EXPORT_SYMBOL(drm_mode_set_crtcinfo);
 
-- 
cgit v1.1


From d5c2c20e356ddcb597ee7099dc874bdac774884b Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Fri, 17 Aug 2012 02:55:48 +0000
Subject: drm/udl: dpms off the crtc when disabled.

This turns off the crtc when its been disabled,
fixes it not turning off properly the whole time.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/udl/udl_modeset.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/udl/udl_modeset.c b/drivers/gpu/drm/udl/udl_modeset.c
index f5dd89e..9159d48 100644
--- a/drivers/gpu/drm/udl/udl_modeset.c
+++ b/drivers/gpu/drm/udl/udl_modeset.c
@@ -354,8 +354,7 @@ static int udl_crtc_mode_set(struct drm_crtc *crtc,
 
 static void udl_crtc_disable(struct drm_crtc *crtc)
 {
-
-
+	udl_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
 }
 
 static void udl_crtc_destroy(struct drm_crtc *crtc)
-- 
cgit v1.1


From 27fc4f1c0be917b1e5cef934783f9b09e28e92ea Mon Sep 17 00:00:00 2001
From: Sachin Kamat <sachin.kamat@linaro.org>
Date: Wed, 1 Aug 2012 17:15:30 +0530
Subject: drm: Add missing static storage class specifiers in drm_proc.c file

Fixes the following sparse warning:
drivers/gpu/drm/drm_proc.c:92:5:
warning: symbol 'drm_proc_create_files' was not declared. Should it be static?
drivers/gpu/drm/drm_proc.c:175:5:
warning: symbol 'drm_proc_remove_files' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
 drivers/gpu/drm/drm_proc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/gpu/drm/drm_proc.c b/drivers/gpu/drm/drm_proc.c
index 371c695..da457b1 100644
--- a/drivers/gpu/drm/drm_proc.c
+++ b/drivers/gpu/drm/drm_proc.c
@@ -89,7 +89,7 @@ static const struct file_operations drm_proc_fops = {
  * Create a given set of proc files represented by an array of
  * gdm_proc_lists in the given root directory.
  */
-int drm_proc_create_files(struct drm_info_list *files, int count,
+static int drm_proc_create_files(struct drm_info_list *files, int count,
 			  struct proc_dir_entry *root, struct drm_minor *minor)
 {
 	struct drm_device *dev = minor->dev;
@@ -172,7 +172,7 @@ int drm_proc_init(struct drm_minor *minor, int minor_id,
 	return 0;
 }
 
-int drm_proc_remove_files(struct drm_info_list *files, int count,
+static int drm_proc_remove_files(struct drm_info_list *files, int count,
 			  struct drm_minor *minor)
 {
 	struct list_head *pos, *q;
-- 
cgit v1.1


From d8636a2717bb3da2a7ce2154bf08de90bb8c87b0 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Tue, 21 Aug 2012 16:29:47 +1000
Subject: fbcon: fix race condition between console lock and cursor timer
 (v1.1)

So we've had a fair few reports of fbcon handover breakage between
efi/vesafb and i915 surface recently, so I dedicated a couple of
days to finding the problem.

Essentially the last thing we saw was the conflicting framebuffer
message and that was all.

So after much tracing with direct netconsole writes (printks
under console_lock not so useful), I think I found the race.

Thread A (driver load)    Thread B (timer thread)
  unbind_con_driver ->              |
  bind_con_driver ->                |
  vc->vc_sw->con_deinit ->          |
  fbcon_deinit ->                   |
  console_lock()                    |
      |                             |
      |                       fbcon_flashcursor timer fires
      |                       console_lock() <- blocked for A
      |
      |
fbcon_del_cursor_timer ->
  del_timer_sync
  (BOOM)

Of course because all of this is under the console lock,
we never see anything, also since we also just unbound the active
console guess what we never see anything.

Hopefully this fixes the problem for anyone seeing vesafb->kms
driver handoff.

v1.1: add comment suggestion from Alan.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
 drivers/video/console/fbcon.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 2e471c2..88e9204 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -372,8 +372,15 @@ static void fb_flashcursor(struct work_struct *work)
 	struct vc_data *vc = NULL;
 	int c;
 	int mode;
+	int ret;
+
+	/* FIXME: we should sort out the unbind locking instead */
+	/* instead we just fail to flash the cursor if we can't get
+	 * the lock instead of blocking fbcon deinit */
+	ret = console_trylock();
+	if (ret == 0)
+		return;
 
-	console_lock();
 	if (ops && ops->currcon != -1)
 		vc = vc_cons[ops->currcon].d;
 
-- 
cgit v1.1


From 934ad4c235f87dcb9206abdfa22922358999afab Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 17 Aug 2012 19:49:09 -0400
Subject: vfio: don't dereference after kfree...

Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 drivers/vfio/vfio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 9591e2b..0b025d5 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -416,8 +416,9 @@ static void vfio_device_release(struct kref *kref)
 /* Device reference always implies a group reference */
 static void vfio_device_put(struct vfio_device *device)
 {
+	struct vfio_group *group = device->group;
 	kref_put(&device->kref, vfio_device_release);
-	vfio_group_put(device->group);
+	vfio_group_put(group);
 }
 
 static void vfio_device_get(struct vfio_device *device)
-- 
cgit v1.1


From 6d2cd3ce815b302e885b44ca1bdbe3c7db321c7a Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 17 Aug 2012 21:27:32 -0400
Subject: vfio: get rid of open-coding kref_put_mutex

Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 drivers/vfio/vfio.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

(limited to 'drivers')

diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 0b025d5..92b85676 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -264,6 +264,7 @@ static struct vfio_group *vfio_create_group(struct iommu_group *iommu_group)
 	return group;
 }
 
+/* called with vfio.group_lock held */
 static void vfio_group_release(struct kref *kref)
 {
 	struct vfio_group *group = container_of(kref, struct vfio_group, kref);
@@ -287,13 +288,7 @@ static void vfio_group_release(struct kref *kref)
 
 static void vfio_group_put(struct vfio_group *group)
 {
-	mutex_lock(&vfio.group_lock);
-	/*
-	 * Release needs to unlock to unregister the notifier, so only
-	 * unlock if not released.
-	 */
-	if (!kref_put(&group->kref, vfio_group_release))
-		mutex_unlock(&vfio.group_lock);
+	kref_put_mutex(&group->kref, vfio_group_release, &vfio.group_lock);
 }
 
 /* Assume group_lock or group reference is held */
-- 
cgit v1.1


From 90b1253e4139776e8257914ae9e2292d0de2fecc Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 17 Aug 2012 21:29:06 -0400
Subject: vfio: get rid of vfio_device_put()/vfio_group_get_device* races

we really need to make sure that dropping the last reference happens
under the group->device_lock; otherwise a loop (under device_lock)
might find vfio_device instance that is being freed right now, has
already dropped the last reference and waits on device_lock to exclude
the sucker from the list.

Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 drivers/vfio/vfio.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 92b85676..887ae43 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -396,7 +396,6 @@ static void vfio_device_release(struct kref *kref)
 						  struct vfio_device, kref);
 	struct vfio_group *group = device->group;
 
-	mutex_lock(&group->device_lock);
 	list_del(&device->group_next);
 	mutex_unlock(&group->device_lock);
 
@@ -412,7 +411,7 @@ static void vfio_device_release(struct kref *kref)
 static void vfio_device_put(struct vfio_device *device)
 {
 	struct vfio_group *group = device->group;
-	kref_put(&device->kref, vfio_device_release);
+	kref_put_mutex(&device->kref, vfio_device_release, &group->device_lock);
 	vfio_group_put(group);
 }
 
-- 
cgit v1.1


From 31605debdf5459cc8aacabf192a911a803a81c26 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 17 Aug 2012 21:32:56 -0400
Subject: vfio: grab vfio_device reference *before* exposing the sucker via
 fd_install()

It's not critical (anymore) since another thread closing the file will block
on ->device_lock before it gets to dropping the final reference, but it's
definitely cleaner that way...

Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 drivers/vfio/vfio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 887ae43..17830c9 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -1111,10 +1111,10 @@ static int vfio_group_get_device_fd(struct vfio_group *group, char *buf)
 		 */
 		filep->f_mode |= (FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE);
 
-		fd_install(ret, filep);
-
 		vfio_device_get(device);
 		atomic_inc(&group->container_users);
+
+		fd_install(ret, filep);
 		break;
 	}
 	mutex_unlock(&group->device_lock);
-- 
cgit v1.1


From ea2d218308e5710c70d76eb3c2876988c88119cc Mon Sep 17 00:00:00 2001
From: Vladimir Zapolskiy <vz@mleia.com>
Date: Sun, 5 Aug 2012 00:29:07 +0300
Subject: brcm80211: smac: set interface down on reset

This change marks interface as down on reset, otherwise the driver can't
reinitialize itself properly.

Without the change a transient problem turns out to be critical and leads
to inavailability to reset the driver without brcmsmac module unload/load
cycle:

    ieee80211 phy0: wl0: PSM microcode watchdog fired at 5993 (seconds). Resetting.
    brcms_c_dpc : PSM Watchdog, chipid 0xa8d9, chiprev 0x1
    ieee80211 phy0: wl0: fatal error, reinitializing
    ieee80211 phy0: Hardware restart was requested
    ieee80211 phy0: brcms_ops_start: brcms_up() returned -19

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Cc: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
index 192ad5c..a5edebe 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
@@ -1233,6 +1233,9 @@ uint brcms_reset(struct brcms_info *wl)
 	/* dpc will not be rescheduled */
 	wl->resched = false;
 
+	/* inform publicly that interface is down */
+	wl->pub->up = false;
+
 	return 0;
 }
 
-- 
cgit v1.1


From 5f42f7bc9638a0bc69dcb8b8b6da542b72113fc2 Mon Sep 17 00:00:00 2001
From: Giuseppe CAVALLARO <peppe.cavallaro@st.com>
Date: Wed, 22 Aug 2012 00:26:15 +0000
Subject: stmmac: fix GMAC syn ID

Erroneously the DWMAC_CORE_3_40 was set to 34 instead of 0x34.
This can generate problems when run on old chips because
the driver assumes that there are the extra 16 regs available
for perfect filtering.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Gianni Antoniazzi <gianni.antoniazzi-ext@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac1000.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
index f90fcb5..b4c44a5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
@@ -229,6 +229,6 @@ enum rtc_control {
 #define GMAC_MMC_RX_CSUM_OFFLOAD   0x208
 
 /* Synopsys Core versions */
-#define	DWMAC_CORE_3_40	34
+#define	DWMAC_CORE_3_40	0x34
 
 extern const struct stmmac_dma_ops dwmac1000_dma_ops;
-- 
cgit v1.1


From a6b9650108003e994770209fb8efedf6e214dcf7 Mon Sep 17 00:00:00 2001
From: Giuseppe CAVALLARO <peppe.cavallaro@st.com>
Date: Wed, 22 Aug 2012 00:26:16 +0000
Subject: stmmac: fix a typo in the macro used to mask the mmc irq

This patch fixes the name of the macro used to mask the
mmc interrupt: erroneously it was used: MMC_DEFAUL_MASK.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/stmicro/stmmac/mmc_core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
index c07cfe9..0c74a70 100644
--- a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
@@ -33,7 +33,7 @@
 #define MMC_TX_INTR		0x00000108	/* MMC TX Interrupt */
 #define MMC_RX_INTR_MASK	0x0000010c	/* MMC Interrupt Mask */
 #define MMC_TX_INTR_MASK	0x00000110	/* MMC Interrupt Mask */
-#define MMC_DEFAUL_MASK		0xffffffff
+#define MMC_DEFAULT_MASK		0xffffffff
 
 /* MMC TX counter registers */
 
@@ -147,8 +147,8 @@ void dwmac_mmc_ctrl(void __iomem *ioaddr, unsigned int mode)
 /* To mask all all interrupts.*/
 void dwmac_mmc_intr_all_mask(void __iomem *ioaddr)
 {
-	writel(MMC_DEFAUL_MASK, ioaddr + MMC_RX_INTR_MASK);
-	writel(MMC_DEFAUL_MASK, ioaddr + MMC_TX_INTR_MASK);
+	writel(MMC_DEFAULT_MASK, ioaddr + MMC_RX_INTR_MASK);
+	writel(MMC_DEFAULT_MASK, ioaddr + MMC_TX_INTR_MASK);
 }
 
 /* This reads the MAC core counters (if actaully supported).
-- 
cgit v1.1


From ac70b2e9a13423b5efa0178e081936ce6979aea5 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Wed, 15 Aug 2012 18:09:15 +0100
Subject: sfc: Fix reporting of IPv4 full filters through ethtool

ETHTOOL_GRXCLSRULE returns filters for a TCP/IPv4 or UDP/IPv4 4-tuple
with source and destination swapped.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/ethtool.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c
index 8cba2df..5faedd8 100644
--- a/drivers/net/ethernet/sfc/ethtool.c
+++ b/drivers/net/ethernet/sfc/ethtool.c
@@ -863,8 +863,8 @@ static int efx_ethtool_get_class_rule(struct efx_nic *efx,
 				       &ip_entry->ip4dst, &ip_entry->pdst);
 	if (rc != 0) {
 		rc = efx_filter_get_ipv4_full(
-			&spec, &proto, &ip_entry->ip4src, &ip_entry->psrc,
-			&ip_entry->ip4dst, &ip_entry->pdst);
+			&spec, &proto, &ip_entry->ip4dst, &ip_entry->pdst,
+			&ip_entry->ip4src, &ip_entry->psrc);
 		EFX_WARN_ON_PARANOID(rc);
 		ip_mask->ip4src = ~0;
 		ip_mask->psrc = ~0;
-- 
cgit v1.1


From ef813c412c0cf254ddce7d922289e2d6a69960f0 Mon Sep 17 00:00:00 2001
From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Wed, 8 Aug 2012 19:15:01 +0400
Subject: can: softing: Fix potential memory leak in softing_load_fw()

Do not leak memory by updating pointer with potentially NULL realloc return value.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 drivers/net/can/softing/softing_fw.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/can/softing/softing_fw.c b/drivers/net/can/softing/softing_fw.c
index 3105961..b595d34 100644
--- a/drivers/net/can/softing/softing_fw.c
+++ b/drivers/net/can/softing/softing_fw.c
@@ -150,7 +150,7 @@ int softing_load_fw(const char *file, struct softing *card,
 	const uint8_t *mem, *end, *dat;
 	uint16_t type, len;
 	uint32_t addr;
-	uint8_t *buf = NULL;
+	uint8_t *buf = NULL, *new_buf;
 	int buflen = 0;
 	int8_t type_end = 0;
 
@@ -199,11 +199,12 @@ int softing_load_fw(const char *file, struct softing *card,
 		if (len > buflen) {
 			/* align buflen */
 			buflen = (len + (1024-1)) & ~(1024-1);
-			buf = krealloc(buf, buflen, GFP_KERNEL);
-			if (!buf) {
+			new_buf = krealloc(buf, buflen, GFP_KERNEL);
+			if (!new_buf) {
 				ret = -ENOMEM;
 				goto failed;
 			}
+			buf = new_buf;
 		}
 		/* verify record data */
 		memcpy_fromio(buf, &dpram[addr + offset], len);
-- 
cgit v1.1


From da3d50ef308d53f216f1f92f4971f245c13e9f65 Mon Sep 17 00:00:00 2001
From: Sven Schmitt <sven.schmitt@volkswagen.de>
Date: Thu, 9 Aug 2012 14:46:34 +0200
Subject: can: sja1000_platform: fix wrong flag IRQF_SHARED for interrupt
 sharing

The sja1000 platform driver wrongly assumes that a shared IRQ is indicated
with the IRQF_SHARED flag in irq resource flags. This patch changes the
driver to handle the correct flag IORESOURCE_IRQ_SHAREABLE instead.

There are no mainline users of the platform driver which wrongly make use
of IRQF_SHARED.

Signed-off-by: Sven Schmitt <sven.schmitt@volkswagen.de>
Acked-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 drivers/net/can/sja1000/sja1000_platform.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/can/sja1000/sja1000_platform.c b/drivers/net/can/sja1000/sja1000_platform.c
index 4f50145..662c5f7 100644
--- a/drivers/net/can/sja1000/sja1000_platform.c
+++ b/drivers/net/can/sja1000/sja1000_platform.c
@@ -109,7 +109,9 @@ static int sp_probe(struct platform_device *pdev)
 	priv = netdev_priv(dev);
 
 	dev->irq = res_irq->start;
-	priv->irq_flags = res_irq->flags & (IRQF_TRIGGER_MASK | IRQF_SHARED);
+	priv->irq_flags = res_irq->flags & IRQF_TRIGGER_MASK;
+	if (res_irq->flags & IORESOURCE_IRQ_SHAREABLE)
+		priv->irq_flags |= IRQF_SHARED;
 	priv->reg_base = addr;
 	/* The CAN clock frequency is half the oscillator clock frequency */
 	priv->can.clock.freq = pdata->osc_freq / 2;
-- 
cgit v1.1


From 9f35a7342cff0be72e3c038ea972e07662ca1ce8 Mon Sep 17 00:00:00 2001
From: Timur Tabi <timur@freescale.com>
Date: Mon, 20 Aug 2012 09:26:39 +0000
Subject: net/fsl: introduce Freescale 10G MDIO driver

Similar to fsl_pq_mdio.c, this driver is for the 10G MDIO controller on
Freescale Frame Manager Ethernet controllers.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/freescale/Kconfig      |   7 +
 drivers/net/ethernet/freescale/Makefile     |   1 +
 drivers/net/ethernet/freescale/xgmac_mdio.c | 274 ++++++++++++++++++++++++++++
 3 files changed, 282 insertions(+)
 create mode 100644 drivers/net/ethernet/freescale/xgmac_mdio.c

(limited to 'drivers')

diff --git a/drivers/net/ethernet/freescale/Kconfig b/drivers/net/ethernet/freescale/Kconfig
index 3574e14..feff516 100644
--- a/drivers/net/ethernet/freescale/Kconfig
+++ b/drivers/net/ethernet/freescale/Kconfig
@@ -62,6 +62,13 @@ config FSL_PQ_MDIO
 	---help---
 	  This driver supports the MDIO bus used by the gianfar and UCC drivers.
 
+config FSL_XGMAC_MDIO
+	tristate "Freescale XGMAC MDIO"
+	depends on FSL_SOC
+	select PHYLIB
+	---help---
+	  This driver supports the MDIO bus on the Fman 10G Ethernet MACs.
+
 config UCC_GETH
 	tristate "Freescale QE Gigabit Ethernet"
 	depends on QUICC_ENGINE
diff --git a/drivers/net/ethernet/freescale/Makefile b/drivers/net/ethernet/freescale/Makefile
index 1752488..3d1839a 100644
--- a/drivers/net/ethernet/freescale/Makefile
+++ b/drivers/net/ethernet/freescale/Makefile
@@ -9,6 +9,7 @@ ifeq ($(CONFIG_FEC_MPC52xx_MDIO),y)
 endif
 obj-$(CONFIG_FS_ENET) += fs_enet/
 obj-$(CONFIG_FSL_PQ_MDIO) += fsl_pq_mdio.o
+obj-$(CONFIG_FSL_XGMAC_MDIO) += xgmac_mdio.o
 obj-$(CONFIG_GIANFAR) += gianfar_driver.o
 obj-$(CONFIG_PTP_1588_CLOCK_GIANFAR) += gianfar_ptp.o
 gianfar_driver-objs := gianfar.o \
diff --git a/drivers/net/ethernet/freescale/xgmac_mdio.c b/drivers/net/ethernet/freescale/xgmac_mdio.c
new file mode 100644
index 0000000..1afb5ea
--- /dev/null
+++ b/drivers/net/ethernet/freescale/xgmac_mdio.c
@@ -0,0 +1,274 @@
+/*
+ * QorIQ 10G MDIO Controller
+ *
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * Authors: Andy Fleming <afleming@freescale.com>
+ *          Timur Tabi <timur@freescale.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/phy.h>
+#include <linux/mdio.h>
+#include <linux/of_platform.h>
+#include <linux/of_mdio.h>
+
+/* Number of microseconds to wait for a register to respond */
+#define TIMEOUT	1000
+
+struct tgec_mdio_controller {
+	__be32	reserved[12];
+	__be32	mdio_stat;	/* MDIO configuration and status */
+	__be32	mdio_ctl;	/* MDIO control */
+	__be32	mdio_data;	/* MDIO data */
+	__be32	mdio_addr;	/* MDIO address */
+} __packed;
+
+#define MDIO_STAT_CLKDIV(x)	(((x>>1) & 0xff) << 8)
+#define MDIO_STAT_BSY		(1 << 0)
+#define MDIO_STAT_RD_ER		(1 << 1)
+#define MDIO_CTL_DEV_ADDR(x) 	(x & 0x1f)
+#define MDIO_CTL_PORT_ADDR(x)	((x & 0x1f) << 5)
+#define MDIO_CTL_PRE_DIS	(1 << 10)
+#define MDIO_CTL_SCAN_EN	(1 << 11)
+#define MDIO_CTL_POST_INC	(1 << 14)
+#define MDIO_CTL_READ		(1 << 15)
+
+#define MDIO_DATA(x)		(x & 0xffff)
+#define MDIO_DATA_BSY		(1 << 31)
+
+/*
+ * Wait untill the MDIO bus is free
+ */
+static int xgmac_wait_until_free(struct device *dev,
+				 struct tgec_mdio_controller __iomem *regs)
+{
+	uint32_t status;
+
+	/* Wait till the bus is free */
+	status = spin_event_timeout(
+		!((in_be32(&regs->mdio_stat)) & MDIO_STAT_BSY), TIMEOUT, 0);
+	if (!status) {
+		dev_err(dev, "timeout waiting for bus to be free\n");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+/*
+ * Wait till the MDIO read or write operation is complete
+ */
+static int xgmac_wait_until_done(struct device *dev,
+				 struct tgec_mdio_controller __iomem *regs)
+{
+	uint32_t status;
+
+	/* Wait till the MDIO write is complete */
+	status = spin_event_timeout(
+		!((in_be32(&regs->mdio_data)) & MDIO_DATA_BSY), TIMEOUT, 0);
+	if (!status) {
+		dev_err(dev, "timeout waiting for operation to complete\n");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+/*
+ * Write value to the PHY for this device to the register at regnum,waiting
+ * until the write is done before it returns.  All PHY configuration has to be
+ * done through the TSEC1 MIIM regs.
+ */
+static int xgmac_mdio_write(struct mii_bus *bus, int phy_id, int regnum, u16 value)
+{
+	struct tgec_mdio_controller __iomem *regs = bus->priv;
+	uint16_t dev_addr = regnum >> 16;
+	int ret;
+
+	/* Setup the MII Mgmt clock speed */
+	out_be32(&regs->mdio_stat, MDIO_STAT_CLKDIV(100));
+
+	ret = xgmac_wait_until_free(&bus->dev, regs);
+	if (ret)
+		return ret;
+
+	/* Set the port and dev addr */
+	out_be32(&regs->mdio_ctl,
+		 MDIO_CTL_PORT_ADDR(phy_id) | MDIO_CTL_DEV_ADDR(dev_addr));
+
+	/* Set the register address */
+	out_be32(&regs->mdio_addr, regnum & 0xffff);
+
+	ret = xgmac_wait_until_free(&bus->dev, regs);
+	if (ret)
+		return ret;
+
+	/* Write the value to the register */
+	out_be32(&regs->mdio_data, MDIO_DATA(value));
+
+	ret = xgmac_wait_until_done(&bus->dev, regs);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+/*
+ * Reads from register regnum in the PHY for device dev, returning the value.
+ * Clears miimcom first.  All PHY configuration has to be done through the
+ * TSEC1 MIIM regs.
+ */
+static int xgmac_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
+{
+	struct tgec_mdio_controller __iomem *regs = bus->priv;
+	uint16_t dev_addr = regnum >> 16;
+	uint32_t mdio_ctl;
+	uint16_t value;
+	int ret;
+
+	/* Setup the MII Mgmt clock speed */
+	out_be32(&regs->mdio_stat, MDIO_STAT_CLKDIV(100));
+
+	ret = xgmac_wait_until_free(&bus->dev, regs);
+	if (ret)
+		return ret;
+
+	/* Set the Port and Device Addrs */
+	mdio_ctl = MDIO_CTL_PORT_ADDR(phy_id) | MDIO_CTL_DEV_ADDR(dev_addr);
+	out_be32(&regs->mdio_ctl, mdio_ctl);
+
+	/* Set the register address */
+	out_be32(&regs->mdio_addr, regnum & 0xffff);
+
+	ret = xgmac_wait_until_free(&bus->dev, regs);
+	if (ret)
+		return ret;
+
+	/* Initiate the read */
+	out_be32(&regs->mdio_ctl, mdio_ctl | MDIO_CTL_READ);
+
+	ret = xgmac_wait_until_done(&bus->dev, regs);
+	if (ret)
+		return ret;
+
+	/* Return all Fs if nothing was there */
+	if (in_be32(&regs->mdio_stat) & MDIO_STAT_RD_ER) {
+		dev_err(&bus->dev, "MDIO read error\n");
+		return 0xffff;
+	}
+
+	value = in_be32(&regs->mdio_data) & 0xffff;
+	dev_dbg(&bus->dev, "read %04x\n", value);
+
+	return value;
+}
+
+/* Reset the MIIM registers, and wait for the bus to free */
+static int xgmac_mdio_reset(struct mii_bus *bus)
+{
+	struct tgec_mdio_controller __iomem *regs = bus->priv;
+	int ret;
+
+	mutex_lock(&bus->mdio_lock);
+
+	/* Setup the MII Mgmt clock speed */
+	out_be32(&regs->mdio_stat, MDIO_STAT_CLKDIV(100));
+
+	ret = xgmac_wait_until_free(&bus->dev, regs);
+
+	mutex_unlock(&bus->mdio_lock);
+
+	return ret;
+}
+
+static int __devinit xgmac_mdio_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct mii_bus *bus;
+	struct resource res;
+	int ret;
+
+	ret = of_address_to_resource(np, 0, &res);
+	if (ret) {
+		dev_err(&pdev->dev, "could not obtain address\n");
+		return ret;
+	}
+
+	bus = mdiobus_alloc_size(PHY_MAX_ADDR * sizeof(int));
+	if (!bus)
+		return -ENOMEM;
+
+	bus->name = "Freescale XGMAC MDIO Bus";
+	bus->read = xgmac_mdio_read;
+	bus->write = xgmac_mdio_write;
+	bus->reset = xgmac_mdio_reset;
+	bus->irq = bus->priv;
+	bus->parent = &pdev->dev;
+	snprintf(bus->id, MII_BUS_ID_SIZE, "%llx", (unsigned long long)res.start);
+
+	/* Set the PHY base address */
+	bus->priv = of_iomap(np, 0);
+	if (!bus->priv) {
+		ret = -ENOMEM;
+		goto err_ioremap;
+	}
+
+	ret = of_mdiobus_register(bus, np);
+	if (ret) {
+		dev_err(&pdev->dev, "cannot register MDIO bus\n");
+		goto err_registration;
+	}
+
+	dev_set_drvdata(&pdev->dev, bus);
+
+	return 0;
+
+err_registration:
+	iounmap(bus->priv);
+
+err_ioremap:
+	mdiobus_free(bus);
+
+	return ret;
+}
+
+static int __devexit xgmac_mdio_remove(struct platform_device *pdev)
+{
+	struct mii_bus *bus = dev_get_drvdata(&pdev->dev);
+
+	mdiobus_unregister(bus);
+	iounmap(bus->priv);
+	mdiobus_free(bus);
+
+	return 0;
+}
+
+static struct of_device_id xgmac_mdio_match[] = {
+	{
+		.compatible = "fsl,fman-xmdio",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, xgmac_mdio_match);
+
+static struct platform_driver xgmac_mdio_driver = {
+	.driver = {
+		.name = "fsl-fman_xmdio",
+		.of_match_table = xgmac_mdio_match,
+	},
+	.probe = xgmac_mdio_probe,
+	.remove = xgmac_mdio_remove,
+};
+
+module_platform_driver(xgmac_mdio_driver);
+
+MODULE_DESCRIPTION("Freescale QorIQ 10G MDIO Controller");
+MODULE_LICENSE("GPL v2");
-- 
cgit v1.1


From bd4242dfe85470b9caecbd049310518f9b9e3f14 Mon Sep 17 00:00:00 2001
From: Rayagond Kokatanur <rayagond@vayavyalabs.com>
Date: Wed, 22 Aug 2012 21:28:18 +0000
Subject: stmmac: add header inclusion protection

This patch adds "#ifndef __<header>_H" for protecting header from double
inclusion.

Signed-off-by: Rayagond Kokatanur <rayagond@vayavyalabs.com>
Hacked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/stmicro/stmmac/common.h       | 5 +++++
 drivers/net/ethernet/stmicro/stmmac/descs.h        | 6 ++++++
 drivers/net/ethernet/stmicro/stmmac/descs_com.h    | 5 +++++
 drivers/net/ethernet/stmicro/stmmac/dwmac100.h     | 5 +++++
 drivers/net/ethernet/stmicro/stmmac/dwmac1000.h    | 3 +++
 drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h    | 5 +++++
 drivers/net/ethernet/stmicro/stmmac/mmc.h          | 5 +++++
 drivers/net/ethernet/stmicro/stmmac/stmmac.h       | 5 +++++
 drivers/net/ethernet/stmicro/stmmac/stmmac_timer.h | 4 ++++
 9 files changed, 43 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index e2d0832..719be39 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -22,6 +22,9 @@
   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
 *******************************************************************************/
 
+#ifndef __COMMON_H__
+#define __COMMON_H__
+
 #include <linux/etherdevice.h>
 #include <linux/netdevice.h>
 #include <linux/phy.h>
@@ -366,3 +369,5 @@ extern void stmmac_set_mac(void __iomem *ioaddr, bool enable);
 
 extern void dwmac_dma_flush_tx_fifo(void __iomem *ioaddr);
 extern const struct stmmac_ring_mode_ops ring_mode_ops;
+
+#endif /* __COMMON_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/descs.h b/drivers/net/ethernet/stmicro/stmmac/descs.h
index 9820ec8..223adf9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/descs.h
+++ b/drivers/net/ethernet/stmicro/stmmac/descs.h
@@ -20,6 +20,10 @@
 
   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
 *******************************************************************************/
+
+#ifndef __DESCS_H__
+#define __DESCS_H__
+
 struct dma_desc {
 	/* Receive descriptor */
 	union {
@@ -166,3 +170,5 @@ enum tdes_csum_insertion {
 					 * is not calculated */
 	cic_full = 3,		/* IP header and pseudoheader */
 };
+
+#endif /* __DESCS_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/descs_com.h b/drivers/net/ethernet/stmicro/stmmac/descs_com.h
index dd8d6e1..7ee9499 100644
--- a/drivers/net/ethernet/stmicro/stmmac/descs_com.h
+++ b/drivers/net/ethernet/stmicro/stmmac/descs_com.h
@@ -27,6 +27,9 @@
   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
 *******************************************************************************/
 
+#ifndef __DESC_COM_H__
+#define __DESC_COM_H__
+
 #if defined(CONFIG_STMMAC_RING)
 static inline void ehn_desc_rx_set_on_ring_chain(struct dma_desc *p, int end)
 {
@@ -124,3 +127,5 @@ static inline void norm_set_tx_desc_len(struct dma_desc *p, int len)
 	p->des01.tx.buffer1_size = len;
 }
 #endif
+
+#endif /* __DESC_COM_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100.h b/drivers/net/ethernet/stmicro/stmmac/dwmac100.h
index 7c6d857..2ec6aea 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100.h
@@ -22,6 +22,9 @@
   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
 *******************************************************************************/
 
+#ifndef __DWMAC100_H__
+#define __DWMAC100_H__
+
 #include <linux/phy.h>
 #include "common.h"
 
@@ -119,3 +122,5 @@ enum ttc_control {
 #define DMA_MISSED_FRAME_M_CNTR	0x0000ffff	/* Missed Frame Couinter */
 
 extern const struct stmmac_dma_ops dwmac100_dma_ops;
+
+#endif /* __DWMAC100_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
index b4c44a5..0e4cace 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
@@ -19,6 +19,8 @@
 
   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
 *******************************************************************************/
+#ifndef __DWMAC1000_H__
+#define __DWMAC1000_H__
 
 #include <linux/phy.h>
 #include "common.h"
@@ -232,3 +234,4 @@ enum rtc_control {
 #define	DWMAC_CORE_3_40	0x34
 
 extern const struct stmmac_dma_ops dwmac1000_dma_ops;
+#endif /* __DWMAC1000_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
index e678ce3..e49c9a0 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
@@ -22,6 +22,9 @@
   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
 *******************************************************************************/
 
+#ifndef __DWMAC_DMA_H__
+#define __DWMAC_DMA_H__
+
 /* DMA CRS Control and Status Register Mapping */
 #define DMA_BUS_MODE		0x00001000	/* Bus Mode */
 #define DMA_XMT_POLL_DEMAND	0x00001004	/* Transmit Poll Demand */
@@ -109,3 +112,5 @@ extern void dwmac_dma_start_rx(void __iomem *ioaddr);
 extern void dwmac_dma_stop_rx(void __iomem *ioaddr);
 extern int dwmac_dma_interrupt(void __iomem *ioaddr,
 				struct stmmac_extra_stats *x);
+
+#endif /* __DWMAC_DMA_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc.h b/drivers/net/ethernet/stmicro/stmmac/mmc.h
index a3835202..67995ef 100644
--- a/drivers/net/ethernet/stmicro/stmmac/mmc.h
+++ b/drivers/net/ethernet/stmicro/stmmac/mmc.h
@@ -22,6 +22,9 @@
   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
 *******************************************************************************/
 
+#ifndef __MMC_H__
+#define __MMC_H__
+
 /* MMC control register */
 /* When set, all counter are reset */
 #define MMC_CNTRL_COUNTER_RESET		0x1
@@ -129,3 +132,5 @@ struct stmmac_counters {
 extern void dwmac_mmc_ctrl(void __iomem *ioaddr, unsigned int mode);
 extern void dwmac_mmc_intr_all_mask(void __iomem *ioaddr);
 extern void dwmac_mmc_read(void __iomem *ioaddr, struct stmmac_counters *mmc);
+
+#endif /* __MMC_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index f2d3665..e872e1d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -20,6 +20,9 @@
   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
 *******************************************************************************/
 
+#ifndef __STMMAC_H__
+#define __STMMAC_H__
+
 #define STMMAC_RESOURCE_NAME   "stmmaceth"
 #define DRV_MODULE_VERSION	"March_2012"
 
@@ -166,3 +169,5 @@ static inline void stmmac_unregister_pci(void)
 {
 }
 #endif /* CONFIG_STMMAC_PCI */
+
+#endif /* __STMMAC_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_timer.h b/drivers/net/ethernet/stmicro/stmmac/stmmac_timer.h
index 6863590..aea9b14 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_timer.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_timer.h
@@ -21,6 +21,8 @@
 
   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
 *******************************************************************************/
+#ifndef __STMMAC_TIMER_H__
+#define __STMMAC_TIMER_H__
 
 struct stmmac_timer {
 	void (*timer_start) (unsigned int new_freq);
@@ -40,3 +42,5 @@ void stmmac_schedule(struct net_device *dev);
 extern int tmu2_register_user(void *fnt, void *data);
 extern void tmu2_unregister_user(void);
 #endif
+
+#endif /* __STMMAC_TIMER_H__ */
-- 
cgit v1.1


From 9213bb8325747d00b6d9d5aea6ccde6a72c8a1fa Mon Sep 17 00:00:00 2001
From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Date: Wed, 22 Aug 2012 20:49:33 +0000
Subject: wimax/i2400m: use is_zero_ether_addr() instead of memcmp()

Using is_zero_ether_addr() instead of directly use
memcmp() to determine if the ethernet address is all
zeros.

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/wimax/i2400m/driver.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wimax/i2400m/driver.c b/drivers/net/wimax/i2400m/driver.c
index 0254261..9c34d2f 100644
--- a/drivers/net/wimax/i2400m/driver.c
+++ b/drivers/net/wimax/i2400m/driver.c
@@ -222,7 +222,6 @@ int i2400m_check_mac_addr(struct i2400m *i2400m)
 	struct sk_buff *skb;
 	const struct i2400m_tlv_detailed_device_info *ddi;
 	struct net_device *net_dev = i2400m->wimax_dev.net_dev;
-	const unsigned char zeromac[ETH_ALEN] = { 0 };
 
 	d_fnstart(3, dev, "(i2400m %p)\n", i2400m);
 	skb = i2400m_get_device_info(i2400m);
@@ -244,7 +243,7 @@ int i2400m_check_mac_addr(struct i2400m *i2400m)
 		 "to that of boot mode's\n");
 	dev_warn(dev, "device reports     %pM\n", ddi->mac_address);
 	dev_warn(dev, "boot mode reported %pM\n", net_dev->perm_addr);
-	if (!memcmp(zeromac, ddi->mac_address, sizeof(zeromac)))
+	if (is_zero_ether_addr(ddi->mac_address))
 		dev_err(dev, "device reports an invalid MAC address, "
 			"not updating\n");
 	else {
-- 
cgit v1.1


From d68bb7e1a65f2604156958ae03a556b6a207514b Mon Sep 17 00:00:00 2001
From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Date: Wed, 22 Aug 2012 21:28:19 +0000
Subject: w5100: using eth_hw_addr_random() for random MAC and set device flag

Using eth_hw_addr_random() to generate a random Ethernet address
(MAC) to be used by a net device and set addr_assign_type.
Not need to duplicating its implementation.

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/wiznet/w5100.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/wiznet/w5100.c b/drivers/net/ethernet/wiznet/w5100.c
index a5826a3..2c08bf6 100644
--- a/drivers/net/ethernet/wiznet/w5100.c
+++ b/drivers/net/ethernet/wiznet/w5100.c
@@ -637,8 +637,7 @@ static int __devinit w5100_hw_probe(struct platform_device *pdev)
 	if (data && is_valid_ether_addr(data->mac_addr)) {
 		memcpy(ndev->dev_addr, data->mac_addr, ETH_ALEN);
 	} else {
-		eth_random_addr(ndev->dev_addr);
-		ndev->addr_assign_type |= NET_ADDR_RANDOM;
+		eth_hw_addr_random(ndev);
 	}
 
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-- 
cgit v1.1


From 1f7c9ae7a014d994c01a7dd59333f2fcef2aba58 Mon Sep 17 00:00:00 2001
From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Date: Wed, 22 Aug 2012 21:28:40 +0000
Subject: w5300: using eth_hw_addr_random() for random MAC and set device flag

Using eth_hw_addr_random() to generate a random Ethernet address
(MAC) to be used by a net device and set addr_assign_type.
Not need to duplicating its implementation.

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/wiznet/w5300.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/wiznet/w5300.c b/drivers/net/ethernet/wiznet/w5300.c
index bdd8891..88943d9 100644
--- a/drivers/net/ethernet/wiznet/w5300.c
+++ b/drivers/net/ethernet/wiznet/w5300.c
@@ -557,8 +557,7 @@ static int __devinit w5300_hw_probe(struct platform_device *pdev)
 	if (data && is_valid_ether_addr(data->mac_addr)) {
 		memcpy(ndev->dev_addr, data->mac_addr, ETH_ALEN);
 	} else {
-		eth_random_addr(ndev->dev_addr);
-		ndev->addr_assign_type |= NET_ADDR_RANDOM;
+		eth_hw_addr_random(ndev);
 	}
 
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-- 
cgit v1.1


From 0c7517e9faa2f79afe95b47321f3cd08fe0145cd Mon Sep 17 00:00:00 2001
From: Jiri Pirko <jiri@resnulli.us>
Date: Thu, 23 Aug 2012 03:26:51 +0000
Subject: team: don't print warn message on -ESRCH during event send

When no one is listening on NL socket, -ESRCH is returned and warning
message is printed. This message is confusing people and in fact has no
meaning. So do not print it in this case.

Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/team/team.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index c8a3f10..a5926c8 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -2486,7 +2486,7 @@ static void __team_options_change_check(struct team *team)
 			list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
 	}
 	err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
-	if (err)
+	if (err && err != -ESRCH)
 		netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
 			    err);
 }
@@ -2517,9 +2517,9 @@ static void __team_port_change_check(struct team_port *port, bool linkup)
 
 send_event:
 	err = team_nl_send_event_port_list_get(port->team);
-	if (err)
-		netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink\n",
-			    port->dev->name);
+	if (err && err != -ESRCH)
+		netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
+			    port->dev->name, err);
 
 }
 
-- 
cgit v1.1


From 2c33bb37cb69dc6d86d2ee8edd1d4814990a65fe Mon Sep 17 00:00:00 2001
From: Jiri Pirko <jiri@resnulli.us>
Date: Thu, 23 Aug 2012 03:26:53 +0000
Subject: team: do not allow to add VLAN challenged port when vlan is used

Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/team/team.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index a5926c8..b4f67b5 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -989,6 +989,13 @@ static int team_port_add(struct team *team, struct net_device *port_dev)
 		return -EBUSY;
 	}
 
+	if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
+	    vlan_uses_dev(dev)) {
+		netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
+			   portname);
+		return -EPERM;
+	}
+
 	err = team_dev_type_check_change(dev, port_dev);
 	if (err)
 		return err;
-- 
cgit v1.1


From 7668ff9c2ad7d354655e23afa836a92d54d2ea63 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Thu, 17 May 2012 20:52:20 +0100
Subject: sfc: Refactor struct efx_tx_buffer to use a flags field

Add a flags field to struct efx_tx_buffer, replacing the
continuation and map_single booleans.

Since a single descriptor cannot be both a TSO header and the last
descriptor for an skb, unionise efx_tx_buffer::{skb,tsoh} and add
flags for validity of these fields.

Clear all flags in free buffers (whereas previously the continuation
flag would be set).

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/net_driver.h | 27 ++++++------
 drivers/net/ethernet/sfc/nic.c        |  4 +-
 drivers/net/ethernet/sfc/tx.c         | 78 ++++++++++++++++-------------------
 3 files changed, 53 insertions(+), 56 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index cd9c0a9..0ac01fa 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -91,29 +91,30 @@ struct efx_special_buffer {
 };
 
 /**
- * struct efx_tx_buffer - An Efx TX buffer
- * @skb: The associated socket buffer.
- *	Set only on the final fragment of a packet; %NULL for all other
- *	fragments.  When this fragment completes, then we can free this
- *	skb.
- * @tsoh: The associated TSO header structure, or %NULL if this
- *	buffer is not a TSO header.
+ * struct efx_tx_buffer - buffer state for a TX descriptor
+ * @skb: When @flags & %EFX_TX_BUF_SKB, the associated socket buffer to be
+ *	freed when descriptor completes
+ * @tsoh: When @flags & %EFX_TX_BUF_TSOH, the associated TSO header structure.
  * @dma_addr: DMA address of the fragment.
+ * @flags: Flags for allocation and DMA mapping type
  * @len: Length of this fragment.
  *	This field is zero when the queue slot is empty.
- * @continuation: True if this fragment is not the end of a packet.
- * @unmap_single: True if dma_unmap_single should be used.
  * @unmap_len: Length of this fragment to unmap
  */
 struct efx_tx_buffer {
-	const struct sk_buff *skb;
-	struct efx_tso_header *tsoh;
+	union {
+		const struct sk_buff *skb;
+		struct efx_tso_header *tsoh;
+	};
 	dma_addr_t dma_addr;
+	unsigned short flags;
 	unsigned short len;
-	bool continuation;
-	bool unmap_single;
 	unsigned short unmap_len;
 };
+#define EFX_TX_BUF_CONT		1	/* not last descriptor of packet */
+#define EFX_TX_BUF_SKB		2	/* buffer is last part of skb */
+#define EFX_TX_BUF_TSOH		4	/* buffer is TSO header */
+#define EFX_TX_BUF_MAP_SINGLE	8	/* buffer was mapped with dma_map_single() */
 
 /**
  * struct efx_tx_queue - An Efx TX queue
diff --git a/drivers/net/ethernet/sfc/nic.c b/drivers/net/ethernet/sfc/nic.c
index 326d799..aa11370 100644
--- a/drivers/net/ethernet/sfc/nic.c
+++ b/drivers/net/ethernet/sfc/nic.c
@@ -401,8 +401,10 @@ void efx_nic_push_buffers(struct efx_tx_queue *tx_queue)
 		++tx_queue->write_count;
 
 		/* Create TX descriptor ring entry */
+		BUILD_BUG_ON(EFX_TX_BUF_CONT != 1);
 		EFX_POPULATE_QWORD_4(*txd,
-				     FSF_AZ_TX_KER_CONT, buffer->continuation,
+				     FSF_AZ_TX_KER_CONT,
+				     buffer->flags & EFX_TX_BUF_CONT,
 				     FSF_AZ_TX_KER_BYTE_COUNT, buffer->len,
 				     FSF_AZ_TX_KER_BUF_REGION, 0,
 				     FSF_AZ_TX_KER_BUF_ADDR, buffer->dma_addr);
diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index 1871343..24c82f3 100644
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -39,25 +39,25 @@ static void efx_dequeue_buffer(struct efx_tx_queue *tx_queue,
 		struct device *dma_dev = &tx_queue->efx->pci_dev->dev;
 		dma_addr_t unmap_addr = (buffer->dma_addr + buffer->len -
 					 buffer->unmap_len);
-		if (buffer->unmap_single)
+		if (buffer->flags & EFX_TX_BUF_MAP_SINGLE)
 			dma_unmap_single(dma_dev, unmap_addr, buffer->unmap_len,
 					 DMA_TO_DEVICE);
 		else
 			dma_unmap_page(dma_dev, unmap_addr, buffer->unmap_len,
 				       DMA_TO_DEVICE);
 		buffer->unmap_len = 0;
-		buffer->unmap_single = false;
 	}
 
-	if (buffer->skb) {
+	if (buffer->flags & EFX_TX_BUF_SKB) {
 		(*pkts_compl)++;
 		(*bytes_compl) += buffer->skb->len;
 		dev_kfree_skb_any((struct sk_buff *) buffer->skb);
-		buffer->skb = NULL;
 		netif_vdbg(tx_queue->efx, tx_done, tx_queue->efx->net_dev,
 			   "TX queue %d transmission id %x complete\n",
 			   tx_queue->queue, tx_queue->read_count);
 	}
+
+	buffer->flags &= EFX_TX_BUF_TSOH;
 }
 
 /**
@@ -89,14 +89,14 @@ static void efx_tsoh_heap_free(struct efx_tx_queue *tx_queue,
 static void efx_tsoh_free(struct efx_tx_queue *tx_queue,
 			  struct efx_tx_buffer *buffer)
 {
-	if (buffer->tsoh) {
+	if (buffer->flags & EFX_TX_BUF_TSOH) {
 		if (likely(!buffer->tsoh->unmap_len)) {
 			buffer->tsoh->next = tx_queue->tso_headers_free;
 			tx_queue->tso_headers_free = buffer->tsoh;
 		} else {
 			efx_tsoh_heap_free(tx_queue, buffer->tsoh);
 		}
-		buffer->tsoh = NULL;
+		buffer->flags &= ~EFX_TX_BUF_TSOH;
 	}
 }
 
@@ -163,7 +163,7 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 	unsigned int len, unmap_len = 0, fill_level, insert_ptr;
 	dma_addr_t dma_addr, unmap_addr = 0;
 	unsigned int dma_len;
-	bool unmap_single;
+	unsigned short dma_flags;
 	int q_space, i = 0;
 	netdev_tx_t rc = NETDEV_TX_OK;
 
@@ -190,7 +190,7 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 	 * since this is more efficient on machines with sparse
 	 * memory.
 	 */
-	unmap_single = true;
+	dma_flags = EFX_TX_BUF_MAP_SINGLE;
 	dma_addr = dma_map_single(dma_dev, skb->data, len, PCI_DMA_TODEVICE);
 
 	/* Process all fragments */
@@ -234,10 +234,8 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 			insert_ptr = tx_queue->insert_count & tx_queue->ptr_mask;
 			buffer = &tx_queue->buffer[insert_ptr];
 			efx_tsoh_free(tx_queue, buffer);
-			EFX_BUG_ON_PARANOID(buffer->tsoh);
-			EFX_BUG_ON_PARANOID(buffer->skb);
+			EFX_BUG_ON_PARANOID(buffer->flags);
 			EFX_BUG_ON_PARANOID(buffer->len);
-			EFX_BUG_ON_PARANOID(!buffer->continuation);
 			EFX_BUG_ON_PARANOID(buffer->unmap_len);
 
 			dma_len = efx_max_tx_len(efx, dma_addr);
@@ -247,13 +245,14 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 			/* Fill out per descriptor fields */
 			buffer->len = dma_len;
 			buffer->dma_addr = dma_addr;
+			buffer->flags = EFX_TX_BUF_CONT;
 			len -= dma_len;
 			dma_addr += dma_len;
 			++tx_queue->insert_count;
 		} while (len);
 
 		/* Transfer ownership of the unmapping to the final buffer */
-		buffer->unmap_single = unmap_single;
+		buffer->flags = EFX_TX_BUF_CONT | dma_flags;
 		buffer->unmap_len = unmap_len;
 		unmap_len = 0;
 
@@ -264,14 +263,14 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 		len = skb_frag_size(fragment);
 		i++;
 		/* Map for DMA */
-		unmap_single = false;
+		dma_flags = 0;
 		dma_addr = skb_frag_dma_map(dma_dev, fragment, 0, len,
 					    DMA_TO_DEVICE);
 	}
 
 	/* Transfer ownership of the skb to the final buffer */
 	buffer->skb = skb;
-	buffer->continuation = false;
+	buffer->flags = EFX_TX_BUF_SKB | dma_flags;
 
 	netdev_tx_sent_queue(tx_queue->core_txq, skb->len);
 
@@ -302,7 +301,7 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 
 	/* Free the fragment we were mid-way through pushing */
 	if (unmap_len) {
-		if (unmap_single)
+		if (dma_flags & EFX_TX_BUF_MAP_SINGLE)
 			dma_unmap_single(dma_dev, unmap_addr, unmap_len,
 					 DMA_TO_DEVICE);
 		else
@@ -340,7 +339,6 @@ static void efx_dequeue_buffers(struct efx_tx_queue *tx_queue,
 		}
 
 		efx_dequeue_buffer(tx_queue, buffer, pkts_compl, bytes_compl);
-		buffer->continuation = true;
 		buffer->len = 0;
 
 		++tx_queue->read_count;
@@ -484,7 +482,7 @@ int efx_probe_tx_queue(struct efx_tx_queue *tx_queue)
 {
 	struct efx_nic *efx = tx_queue->efx;
 	unsigned int entries;
-	int i, rc;
+	int rc;
 
 	/* Create the smallest power-of-two aligned ring */
 	entries = max(roundup_pow_of_two(efx->txq_entries), EFX_MIN_DMAQ_SIZE);
@@ -500,8 +498,6 @@ int efx_probe_tx_queue(struct efx_tx_queue *tx_queue)
 				   GFP_KERNEL);
 	if (!tx_queue->buffer)
 		return -ENOMEM;
-	for (i = 0; i <= tx_queue->ptr_mask; ++i)
-		tx_queue->buffer[i].continuation = true;
 
 	/* Allocate hardware ring */
 	rc = efx_nic_probe_tx(tx_queue);
@@ -546,7 +542,6 @@ void efx_release_tx_buffers(struct efx_tx_queue *tx_queue)
 		unsigned int pkts_compl = 0, bytes_compl = 0;
 		buffer = &tx_queue->buffer[tx_queue->read_count & tx_queue->ptr_mask];
 		efx_dequeue_buffer(tx_queue, buffer, &pkts_compl, &bytes_compl);
-		buffer->continuation = true;
 		buffer->len = 0;
 
 		++tx_queue->read_count;
@@ -631,7 +626,7 @@ void efx_remove_tx_queue(struct efx_tx_queue *tx_queue)
  * @in_len: Remaining length in current SKB fragment
  * @unmap_len: Length of SKB fragment
  * @unmap_addr: DMA address of SKB fragment
- * @unmap_single: DMA single vs page mapping flag
+ * @dma_flags: TX buffer flags for DMA mapping - %EFX_TX_BUF_MAP_SINGLE or 0
  * @protocol: Network protocol (after any VLAN header)
  * @header_len: Number of bytes of header
  * @full_packet_size: Number of bytes to put in each outgoing segment
@@ -651,7 +646,7 @@ struct tso_state {
 	unsigned in_len;
 	unsigned unmap_len;
 	dma_addr_t unmap_addr;
-	bool unmap_single;
+	unsigned short dma_flags;
 
 	__be16 protocol;
 	unsigned header_len;
@@ -833,9 +828,7 @@ static int efx_tx_queue_insert(struct efx_tx_queue *tx_queue,
 		efx_tsoh_free(tx_queue, buffer);
 		EFX_BUG_ON_PARANOID(buffer->len);
 		EFX_BUG_ON_PARANOID(buffer->unmap_len);
-		EFX_BUG_ON_PARANOID(buffer->skb);
-		EFX_BUG_ON_PARANOID(!buffer->continuation);
-		EFX_BUG_ON_PARANOID(buffer->tsoh);
+		EFX_BUG_ON_PARANOID(buffer->flags);
 
 		buffer->dma_addr = dma_addr;
 
@@ -845,7 +838,8 @@ static int efx_tx_queue_insert(struct efx_tx_queue *tx_queue,
 		if (dma_len >= len)
 			break;
 
-		buffer->len = dma_len; /* Don't set the other members */
+		buffer->len = dma_len;
+		buffer->flags = EFX_TX_BUF_CONT;
 		dma_addr += dma_len;
 		len -= dma_len;
 	}
@@ -873,12 +867,11 @@ static void efx_tso_put_header(struct efx_tx_queue *tx_queue,
 	efx_tsoh_free(tx_queue, buffer);
 	EFX_BUG_ON_PARANOID(buffer->len);
 	EFX_BUG_ON_PARANOID(buffer->unmap_len);
-	EFX_BUG_ON_PARANOID(buffer->skb);
-	EFX_BUG_ON_PARANOID(!buffer->continuation);
-	EFX_BUG_ON_PARANOID(buffer->tsoh);
+	EFX_BUG_ON_PARANOID(buffer->flags);
 	buffer->len = len;
 	buffer->dma_addr = tsoh->dma_addr;
 	buffer->tsoh = tsoh;
+	buffer->flags = EFX_TX_BUF_TSOH | EFX_TX_BUF_CONT;
 
 	++tx_queue->insert_count;
 }
@@ -896,11 +889,11 @@ static void efx_enqueue_unwind(struct efx_tx_queue *tx_queue)
 		buffer = &tx_queue->buffer[tx_queue->insert_count &
 					   tx_queue->ptr_mask];
 		efx_tsoh_free(tx_queue, buffer);
-		EFX_BUG_ON_PARANOID(buffer->skb);
+		EFX_BUG_ON_PARANOID(buffer->flags & EFX_TX_BUF_SKB);
 		if (buffer->unmap_len) {
 			unmap_addr = (buffer->dma_addr + buffer->len -
 				      buffer->unmap_len);
-			if (buffer->unmap_single)
+			if (buffer->flags & EFX_TX_BUF_MAP_SINGLE)
 				dma_unmap_single(&tx_queue->efx->pci_dev->dev,
 						 unmap_addr, buffer->unmap_len,
 						 DMA_TO_DEVICE);
@@ -911,7 +904,7 @@ static void efx_enqueue_unwind(struct efx_tx_queue *tx_queue)
 			buffer->unmap_len = 0;
 		}
 		buffer->len = 0;
-		buffer->continuation = true;
+		buffer->flags = 0;
 	}
 }
 
@@ -938,7 +931,7 @@ static void tso_start(struct tso_state *st, const struct sk_buff *skb)
 
 	st->out_len = skb->len - st->header_len;
 	st->unmap_len = 0;
-	st->unmap_single = false;
+	st->dma_flags = 0;
 }
 
 static int tso_get_fragment(struct tso_state *st, struct efx_nic *efx,
@@ -947,7 +940,7 @@ static int tso_get_fragment(struct tso_state *st, struct efx_nic *efx,
 	st->unmap_addr = skb_frag_dma_map(&efx->pci_dev->dev, frag, 0,
 					  skb_frag_size(frag), DMA_TO_DEVICE);
 	if (likely(!dma_mapping_error(&efx->pci_dev->dev, st->unmap_addr))) {
-		st->unmap_single = false;
+		st->dma_flags = 0;
 		st->unmap_len = skb_frag_size(frag);
 		st->in_len = skb_frag_size(frag);
 		st->dma_addr = st->unmap_addr;
@@ -965,7 +958,7 @@ static int tso_get_head_fragment(struct tso_state *st, struct efx_nic *efx,
 	st->unmap_addr = dma_map_single(&efx->pci_dev->dev, skb->data + hl,
 					len, DMA_TO_DEVICE);
 	if (likely(!dma_mapping_error(&efx->pci_dev->dev, st->unmap_addr))) {
-		st->unmap_single = true;
+		st->dma_flags = EFX_TX_BUF_MAP_SINGLE;
 		st->unmap_len = len;
 		st->in_len = len;
 		st->dma_addr = st->unmap_addr;
@@ -990,7 +983,7 @@ static int tso_fill_packet_with_fragment(struct efx_tx_queue *tx_queue,
 					 struct tso_state *st)
 {
 	struct efx_tx_buffer *buffer;
-	int n, end_of_packet, rc;
+	int n, rc;
 
 	if (st->in_len == 0)
 		return 0;
@@ -1008,17 +1001,18 @@ static int tso_fill_packet_with_fragment(struct efx_tx_queue *tx_queue,
 
 	rc = efx_tx_queue_insert(tx_queue, st->dma_addr, n, &buffer);
 	if (likely(rc == 0)) {
-		if (st->out_len == 0)
+		if (st->out_len == 0) {
 			/* Transfer ownership of the skb */
 			buffer->skb = skb;
-
-		end_of_packet = st->out_len == 0 || st->packet_space == 0;
-		buffer->continuation = !end_of_packet;
+			buffer->flags = EFX_TX_BUF_SKB;
+		} else if (st->packet_space != 0) {
+			buffer->flags = EFX_TX_BUF_CONT;
+		}
 
 		if (st->in_len == 0) {
 			/* Transfer ownership of the DMA mapping */
 			buffer->unmap_len = st->unmap_len;
-			buffer->unmap_single = st->unmap_single;
+			buffer->flags |= st->dma_flags;
 			st->unmap_len = 0;
 		}
 	}
@@ -1195,7 +1189,7 @@ static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
  unwind:
 	/* Free the DMA mapping we were in the process of writing out */
 	if (state.unmap_len) {
-		if (state.unmap_single)
+		if (state.dma_flags & EFX_TX_BUF_MAP_SINGLE)
 			dma_unmap_single(&efx->pci_dev->dev, state.unmap_addr,
 					 state.unmap_len, DMA_TO_DEVICE);
 		else
-- 
cgit v1.1


From 14bf718fb97efe9ff649c317e7d87a3617b13e7c Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Tue, 22 May 2012 01:27:58 +0100
Subject: sfc: Stop TX queues before they fill up

We now have a definite upper bound on the number of descriptors per
skb; use that to stop the queue when the next packet might not fit.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c        |  10 ++
 drivers/net/ethernet/sfc/net_driver.h |   5 +
 drivers/net/ethernet/sfc/tx.c         | 212 ++++++++++++++++------------------
 3 files changed, 112 insertions(+), 115 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 65a8d49..3b3f084 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -630,6 +630,16 @@ static void efx_start_datapath(struct efx_nic *efx)
 	efx->rx_buffer_order = get_order(efx->rx_buffer_len +
 					 sizeof(struct efx_rx_page_state));
 
+	/* We must keep at least one descriptor in a TX ring empty.
+	 * We could avoid this when the queue size does not exactly
+	 * match the hardware ring size, but it's not that important.
+	 * Therefore we stop the queue when one more skb might fill
+	 * the ring completely.  We wake it when half way back to
+	 * empty.
+	 */
+	efx->txq_stop_thresh = efx->txq_entries - efx_tx_max_skb_descs(efx);
+	efx->txq_wake_thresh = efx->txq_stop_thresh / 2;
+
 	/* Initialise the channels */
 	efx_for_each_channel(channel, efx) {
 		efx_for_each_channel_tx_queue(tx_queue, channel)
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 0ac01fa..28a6d62 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -665,6 +665,8 @@ struct vfdi_status;
  *	should be allocated for this NIC
  * @rxq_entries: Size of receive queues requested by user.
  * @txq_entries: Size of transmit queues requested by user.
+ * @txq_stop_thresh: TX queue fill level at or above which we stop it.
+ * @txq_wake_thresh: TX queue fill level at or below which we wake it.
  * @tx_dc_base: Base qword address in SRAM of TX queue descriptor caches
  * @rx_dc_base: Base qword address in SRAM of RX queue descriptor caches
  * @sram_lim_qw: Qword address limit of SRAM
@@ -775,6 +777,9 @@ struct efx_nic {
 
 	unsigned rxq_entries;
 	unsigned txq_entries;
+	unsigned int txq_stop_thresh;
+	unsigned int txq_wake_thresh;
+
 	unsigned tx_dc_base;
 	unsigned rx_dc_base;
 	unsigned sram_lim_qw;
diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index 24c82f3..330d911 100644
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -22,14 +22,6 @@
 #include "nic.h"
 #include "workarounds.h"
 
-/*
- * TX descriptor ring full threshold
- *
- * The tx_queue descriptor ring fill-level must fall below this value
- * before we restart the netif queue
- */
-#define EFX_TXQ_THRESHOLD(_efx) ((_efx)->txq_entries / 2u)
-
 static void efx_dequeue_buffer(struct efx_tx_queue *tx_queue,
 			       struct efx_tx_buffer *buffer,
 			       unsigned int *pkts_compl,
@@ -138,6 +130,56 @@ unsigned int efx_tx_max_skb_descs(struct efx_nic *efx)
 	return max_descs;
 }
 
+/* Get partner of a TX queue, seen as part of the same net core queue */
+static struct efx_tx_queue *efx_tx_queue_partner(struct efx_tx_queue *tx_queue)
+{
+	if (tx_queue->queue & EFX_TXQ_TYPE_OFFLOAD)
+		return tx_queue - EFX_TXQ_TYPE_OFFLOAD;
+	else
+		return tx_queue + EFX_TXQ_TYPE_OFFLOAD;
+}
+
+static void efx_tx_maybe_stop_queue(struct efx_tx_queue *txq1)
+{
+	/* We need to consider both queues that the net core sees as one */
+	struct efx_tx_queue *txq2 = efx_tx_queue_partner(txq1);
+	struct efx_nic *efx = txq1->efx;
+	unsigned int fill_level;
+
+	fill_level = max(txq1->insert_count - txq1->old_read_count,
+			 txq2->insert_count - txq2->old_read_count);
+	if (likely(fill_level < efx->txq_stop_thresh))
+		return;
+
+	/* We used the stale old_read_count above, which gives us a
+	 * pessimistic estimate of the fill level (which may even
+	 * validly be >= efx->txq_entries).  Now try again using
+	 * read_count (more likely to be a cache miss).
+	 *
+	 * If we read read_count and then conditionally stop the
+	 * queue, it is possible for the completion path to race with
+	 * us and complete all outstanding descriptors in the middle,
+	 * after which there will be no more completions to wake it.
+	 * Therefore we stop the queue first, then read read_count
+	 * (with a memory barrier to ensure the ordering), then
+	 * restart the queue if the fill level turns out to be low
+	 * enough.
+	 */
+	netif_tx_stop_queue(txq1->core_txq);
+	smp_mb();
+	txq1->old_read_count = ACCESS_ONCE(txq1->read_count);
+	txq2->old_read_count = ACCESS_ONCE(txq2->read_count);
+
+	fill_level = max(txq1->insert_count - txq1->old_read_count,
+			 txq2->insert_count - txq2->old_read_count);
+	EFX_BUG_ON_PARANOID(fill_level >= efx->txq_entries);
+	if (likely(fill_level < efx->txq_stop_thresh)) {
+		smp_mb();
+		if (likely(!efx->loopback_selftest))
+			netif_tx_start_queue(txq1->core_txq);
+	}
+}
+
 /*
  * Add a socket buffer to a TX queue
  *
@@ -151,7 +193,7 @@ unsigned int efx_tx_max_skb_descs(struct efx_nic *efx)
  * This function is split out from efx_hard_start_xmit to allow the
  * loopback test to direct packets via specific TX queues.
  *
- * Returns NETDEV_TX_OK or NETDEV_TX_BUSY
+ * Returns NETDEV_TX_OK.
  * You must hold netif_tx_lock() to call this function.
  */
 netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
@@ -160,12 +202,11 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 	struct device *dma_dev = &efx->pci_dev->dev;
 	struct efx_tx_buffer *buffer;
 	skb_frag_t *fragment;
-	unsigned int len, unmap_len = 0, fill_level, insert_ptr;
+	unsigned int len, unmap_len = 0, insert_ptr;
 	dma_addr_t dma_addr, unmap_addr = 0;
 	unsigned int dma_len;
 	unsigned short dma_flags;
-	int q_space, i = 0;
-	netdev_tx_t rc = NETDEV_TX_OK;
+	int i = 0;
 
 	EFX_BUG_ON_PARANOID(tx_queue->write_count != tx_queue->insert_count);
 
@@ -183,9 +224,6 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 			return NETDEV_TX_OK;
 	}
 
-	fill_level = tx_queue->insert_count - tx_queue->old_read_count;
-	q_space = efx->txq_entries - 1 - fill_level;
-
 	/* Map for DMA.  Use dma_map_single rather than dma_map_page
 	 * since this is more efficient on machines with sparse
 	 * memory.
@@ -205,32 +243,6 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 
 		/* Add to TX queue, splitting across DMA boundaries */
 		do {
-			if (unlikely(q_space-- <= 0)) {
-				/* It might be that completions have
-				 * happened since the xmit path last
-				 * checked.  Update the xmit path's
-				 * copy of read_count.
-				 */
-				netif_tx_stop_queue(tx_queue->core_txq);
-				/* This memory barrier protects the
-				 * change of queue state from the access
-				 * of read_count. */
-				smp_mb();
-				tx_queue->old_read_count =
-					ACCESS_ONCE(tx_queue->read_count);
-				fill_level = (tx_queue->insert_count
-					      - tx_queue->old_read_count);
-				q_space = efx->txq_entries - 1 - fill_level;
-				if (unlikely(q_space-- <= 0)) {
-					rc = NETDEV_TX_BUSY;
-					goto unwind;
-				}
-				smp_mb();
-				if (likely(!efx->loopback_selftest))
-					netif_tx_start_queue(
-						tx_queue->core_txq);
-			}
-
 			insert_ptr = tx_queue->insert_count & tx_queue->ptr_mask;
 			buffer = &tx_queue->buffer[insert_ptr];
 			efx_tsoh_free(tx_queue, buffer);
@@ -277,6 +289,8 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 	/* Pass off to hardware */
 	efx_nic_push_buffers(tx_queue);
 
+	efx_tx_maybe_stop_queue(tx_queue);
+
 	return NETDEV_TX_OK;
 
  dma_err:
@@ -288,7 +302,6 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 	/* Mark the packet as transmitted, and free the SKB ourselves */
 	dev_kfree_skb_any(skb);
 
- unwind:
 	/* Work backwards until we hit the original insert pointer value */
 	while (tx_queue->insert_count != tx_queue->write_count) {
 		unsigned int pkts_compl = 0, bytes_compl = 0;
@@ -309,7 +322,7 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 				       DMA_TO_DEVICE);
 	}
 
-	return rc;
+	return NETDEV_TX_OK;
 }
 
 /* Remove packets from the TX queue
@@ -448,6 +461,7 @@ void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index)
 {
 	unsigned fill_level;
 	struct efx_nic *efx = tx_queue->efx;
+	struct efx_tx_queue *txq2;
 	unsigned int pkts_compl = 0, bytes_compl = 0;
 
 	EFX_BUG_ON_PARANOID(index > tx_queue->ptr_mask);
@@ -455,15 +469,18 @@ void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index)
 	efx_dequeue_buffers(tx_queue, index, &pkts_compl, &bytes_compl);
 	netdev_tx_completed_queue(tx_queue->core_txq, pkts_compl, bytes_compl);
 
-	/* See if we need to restart the netif queue.  This barrier
-	 * separates the update of read_count from the test of the
-	 * queue state. */
+	/* See if we need to restart the netif queue.  This memory
+	 * barrier ensures that we write read_count (inside
+	 * efx_dequeue_buffers()) before reading the queue status.
+	 */
 	smp_mb();
 	if (unlikely(netif_tx_queue_stopped(tx_queue->core_txq)) &&
 	    likely(efx->port_enabled) &&
 	    likely(netif_device_present(efx->net_dev))) {
-		fill_level = tx_queue->insert_count - tx_queue->read_count;
-		if (fill_level < EFX_TXQ_THRESHOLD(efx))
+		txq2 = efx_tx_queue_partner(tx_queue);
+		fill_level = max(tx_queue->insert_count - tx_queue->read_count,
+				 txq2->insert_count - txq2->read_count);
+		if (fill_level <= efx->txq_wake_thresh)
 			netif_tx_wake_queue(tx_queue->core_txq);
 	}
 
@@ -776,47 +793,19 @@ efx_tsoh_heap_free(struct efx_tx_queue *tx_queue, struct efx_tso_header *tsoh)
  * @len:		Length of fragment
  * @final_buffer:	The final buffer inserted into the queue
  *
- * Push descriptors onto the TX queue.  Return 0 on success or 1 if
- * @tx_queue full.
+ * Push descriptors onto the TX queue.
  */
-static int efx_tx_queue_insert(struct efx_tx_queue *tx_queue,
-			       dma_addr_t dma_addr, unsigned len,
-			       struct efx_tx_buffer **final_buffer)
+static void efx_tx_queue_insert(struct efx_tx_queue *tx_queue,
+				dma_addr_t dma_addr, unsigned len,
+				struct efx_tx_buffer **final_buffer)
 {
 	struct efx_tx_buffer *buffer;
 	struct efx_nic *efx = tx_queue->efx;
-	unsigned dma_len, fill_level, insert_ptr;
-	int q_space;
+	unsigned dma_len, insert_ptr;
 
 	EFX_BUG_ON_PARANOID(len <= 0);
 
-	fill_level = tx_queue->insert_count - tx_queue->old_read_count;
-	/* -1 as there is no way to represent all descriptors used */
-	q_space = efx->txq_entries - 1 - fill_level;
-
 	while (1) {
-		if (unlikely(q_space-- <= 0)) {
-			/* It might be that completions have happened
-			 * since the xmit path last checked.  Update
-			 * the xmit path's copy of read_count.
-			 */
-			netif_tx_stop_queue(tx_queue->core_txq);
-			/* This memory barrier protects the change of
-			 * queue state from the access of read_count. */
-			smp_mb();
-			tx_queue->old_read_count =
-				ACCESS_ONCE(tx_queue->read_count);
-			fill_level = (tx_queue->insert_count
-				      - tx_queue->old_read_count);
-			q_space = efx->txq_entries - 1 - fill_level;
-			if (unlikely(q_space-- <= 0)) {
-				*final_buffer = NULL;
-				return 1;
-			}
-			smp_mb();
-			netif_tx_start_queue(tx_queue->core_txq);
-		}
-
 		insert_ptr = tx_queue->insert_count & tx_queue->ptr_mask;
 		buffer = &tx_queue->buffer[insert_ptr];
 		++tx_queue->insert_count;
@@ -847,7 +836,6 @@ static int efx_tx_queue_insert(struct efx_tx_queue *tx_queue,
 	EFX_BUG_ON_PARANOID(!len);
 	buffer->len = len;
 	*final_buffer = buffer;
-	return 0;
 }
 
 
@@ -975,20 +963,19 @@ static int tso_get_head_fragment(struct tso_state *st, struct efx_nic *efx,
  * @st:			TSO state
  *
  * Form descriptors for the current fragment, until we reach the end
- * of fragment or end-of-packet.  Return 0 on success, 1 if not enough
- * space in @tx_queue.
+ * of fragment or end-of-packet.
  */
-static int tso_fill_packet_with_fragment(struct efx_tx_queue *tx_queue,
-					 const struct sk_buff *skb,
-					 struct tso_state *st)
+static void tso_fill_packet_with_fragment(struct efx_tx_queue *tx_queue,
+					  const struct sk_buff *skb,
+					  struct tso_state *st)
 {
 	struct efx_tx_buffer *buffer;
-	int n, rc;
+	int n;
 
 	if (st->in_len == 0)
-		return 0;
+		return;
 	if (st->packet_space == 0)
-		return 0;
+		return;
 
 	EFX_BUG_ON_PARANOID(st->in_len <= 0);
 	EFX_BUG_ON_PARANOID(st->packet_space <= 0);
@@ -999,26 +986,24 @@ static int tso_fill_packet_with_fragment(struct efx_tx_queue *tx_queue,
 	st->out_len -= n;
 	st->in_len -= n;
 
-	rc = efx_tx_queue_insert(tx_queue, st->dma_addr, n, &buffer);
-	if (likely(rc == 0)) {
-		if (st->out_len == 0) {
-			/* Transfer ownership of the skb */
-			buffer->skb = skb;
-			buffer->flags = EFX_TX_BUF_SKB;
-		} else if (st->packet_space != 0) {
-			buffer->flags = EFX_TX_BUF_CONT;
-		}
+	efx_tx_queue_insert(tx_queue, st->dma_addr, n, &buffer);
 
-		if (st->in_len == 0) {
-			/* Transfer ownership of the DMA mapping */
-			buffer->unmap_len = st->unmap_len;
-			buffer->flags |= st->dma_flags;
-			st->unmap_len = 0;
-		}
+	if (st->out_len == 0) {
+		/* Transfer ownership of the skb */
+		buffer->skb = skb;
+		buffer->flags = EFX_TX_BUF_SKB;
+	} else if (st->packet_space != 0) {
+		buffer->flags = EFX_TX_BUF_CONT;
+	}
+
+	if (st->in_len == 0) {
+		/* Transfer ownership of the DMA mapping */
+		buffer->unmap_len = st->unmap_len;
+		buffer->flags |= st->dma_flags;
+		st->unmap_len = 0;
 	}
 
 	st->dma_addr += n;
-	return rc;
 }
 
 
@@ -1112,13 +1097,13 @@ static int tso_start_new_packet(struct efx_tx_queue *tx_queue,
  *
  * Add socket buffer @skb to @tx_queue, doing TSO or return != 0 if
  * @skb was not enqueued.  In all cases @skb is consumed.  Return
- * %NETDEV_TX_OK or %NETDEV_TX_BUSY.
+ * %NETDEV_TX_OK.
  */
 static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
 			       struct sk_buff *skb)
 {
 	struct efx_nic *efx = tx_queue->efx;
-	int frag_i, rc, rc2 = NETDEV_TX_OK;
+	int frag_i, rc;
 	struct tso_state state;
 
 	/* Find the packet protocol and sanity-check it */
@@ -1150,11 +1135,7 @@ static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
 		goto mem_err;
 
 	while (1) {
-		rc = tso_fill_packet_with_fragment(tx_queue, skb, &state);
-		if (unlikely(rc)) {
-			rc2 = NETDEV_TX_BUSY;
-			goto unwind;
-		}
+		tso_fill_packet_with_fragment(tx_queue, skb, &state);
 
 		/* Move onto the next fragment? */
 		if (state.in_len == 0) {
@@ -1178,6 +1159,8 @@ static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
 	/* Pass off to hardware */
 	efx_nic_push_buffers(tx_queue);
 
+	efx_tx_maybe_stop_queue(tx_queue);
+
 	tx_queue->tso_bursts++;
 	return NETDEV_TX_OK;
 
@@ -1186,7 +1169,6 @@ static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
 		  "Out of memory for TSO headers, or DMA mapping error\n");
 	dev_kfree_skb_any(skb);
 
- unwind:
 	/* Free the DMA mapping we were in the process of writing out */
 	if (state.unmap_len) {
 		if (state.dma_flags & EFX_TX_BUF_MAP_SINGLE)
@@ -1198,7 +1180,7 @@ static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
 	}
 
 	efx_enqueue_unwind(tx_queue);
-	return rc2;
+	return NETDEV_TX_OK;
 }
 
 
-- 
cgit v1.1


From f7251a9ce936f1006fbfdef63dbe42ae5e0fee7c Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Thu, 17 May 2012 18:40:54 +0100
Subject: sfc: Simplify TSO header buffer allocation

TSO header buffers contain a control structure immediately followed by
the packet headers, and are kept on a free list when not in use.  This
complicates buffer management and tends to result in cache read misses
when we recycle such buffers (particularly if DMA-coherent memory
requires caches to be disabled).

Replace the free list with a simple mapping by descriptor index.  We
know that there is always a payload descriptor between any two
descriptors with TSO header buffers, so we can allocate only one
such buffer for each two descriptors.

While we're at it, use a standard error code for allocation failure,
not -1.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/net_driver.h |  13 +-
 drivers/net/ethernet/sfc/nic.c        |   2 +-
 drivers/net/ethernet/sfc/tx.c         | 315 ++++++++++++----------------------
 3 files changed, 112 insertions(+), 218 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 28a6d62..a4fe9a7 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -94,7 +94,8 @@ struct efx_special_buffer {
  * struct efx_tx_buffer - buffer state for a TX descriptor
  * @skb: When @flags & %EFX_TX_BUF_SKB, the associated socket buffer to be
  *	freed when descriptor completes
- * @tsoh: When @flags & %EFX_TX_BUF_TSOH, the associated TSO header structure.
+ * @heap_buf: When @flags & %EFX_TX_BUF_HEAP, the associated heap buffer to be
+ *	freed when descriptor completes.
  * @dma_addr: DMA address of the fragment.
  * @flags: Flags for allocation and DMA mapping type
  * @len: Length of this fragment.
@@ -104,7 +105,7 @@ struct efx_special_buffer {
 struct efx_tx_buffer {
 	union {
 		const struct sk_buff *skb;
-		struct efx_tso_header *tsoh;
+		void *heap_buf;
 	};
 	dma_addr_t dma_addr;
 	unsigned short flags;
@@ -113,7 +114,7 @@ struct efx_tx_buffer {
 };
 #define EFX_TX_BUF_CONT		1	/* not last descriptor of packet */
 #define EFX_TX_BUF_SKB		2	/* buffer is last part of skb */
-#define EFX_TX_BUF_TSOH		4	/* buffer is TSO header */
+#define EFX_TX_BUF_HEAP		4	/* buffer was allocated with kmalloc() */
 #define EFX_TX_BUF_MAP_SINGLE	8	/* buffer was mapped with dma_map_single() */
 
 /**
@@ -134,6 +135,7 @@ struct efx_tx_buffer {
  * @channel: The associated channel
  * @core_txq: The networking core TX queue structure
  * @buffer: The software buffer ring
+ * @tsoh_page: Array of pages of TSO header buffers
  * @txd: The hardware descriptor ring
  * @ptr_mask: The size of the ring minus 1.
  * @initialised: Has hardware queue been initialised?
@@ -157,9 +159,6 @@ struct efx_tx_buffer {
  *	variable indicates that the queue is full.  This is to
  *	avoid cache-line ping-pong between the xmit path and the
  *	completion path.
- * @tso_headers_free: A list of TSO headers allocated for this TX queue
- *	that are not in use, and so available for new TSO sends. The list
- *	is protected by the TX queue lock.
  * @tso_bursts: Number of times TSO xmit invoked by kernel
  * @tso_long_headers: Number of packets with headers too long for standard
  *	blocks
@@ -176,6 +175,7 @@ struct efx_tx_queue {
 	struct efx_channel *channel;
 	struct netdev_queue *core_txq;
 	struct efx_tx_buffer *buffer;
+	struct efx_buffer *tsoh_page;
 	struct efx_special_buffer txd;
 	unsigned int ptr_mask;
 	bool initialised;
@@ -188,7 +188,6 @@ struct efx_tx_queue {
 	unsigned int insert_count ____cacheline_aligned_in_smp;
 	unsigned int write_count;
 	unsigned int old_read_count;
-	struct efx_tso_header *tso_headers_free;
 	unsigned int tso_bursts;
 	unsigned int tso_long_headers;
 	unsigned int tso_packets;
diff --git a/drivers/net/ethernet/sfc/nic.c b/drivers/net/ethernet/sfc/nic.c
index aa11370..cdff40b 100644
--- a/drivers/net/ethernet/sfc/nic.c
+++ b/drivers/net/ethernet/sfc/nic.c
@@ -298,7 +298,7 @@ efx_free_special_buffer(struct efx_nic *efx, struct efx_special_buffer *buffer)
 /**************************************************************************
  *
  * Generic buffer handling
- * These buffers are used for interrupt status and MAC stats
+ * These buffers are used for interrupt status, MAC stats, etc.
  *
  **************************************************************************/
 
diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index 330d911..61bc0ed 100644
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -47,51 +47,16 @@ static void efx_dequeue_buffer(struct efx_tx_queue *tx_queue,
 		netif_vdbg(tx_queue->efx, tx_done, tx_queue->efx->net_dev,
 			   "TX queue %d transmission id %x complete\n",
 			   tx_queue->queue, tx_queue->read_count);
+	} else if (buffer->flags & EFX_TX_BUF_HEAP) {
+		kfree(buffer->heap_buf);
 	}
 
-	buffer->flags &= EFX_TX_BUF_TSOH;
+	buffer->len = 0;
+	buffer->flags = 0;
 }
 
-/**
- * struct efx_tso_header - a DMA mapped buffer for packet headers
- * @next: Linked list of free ones.
- *	The list is protected by the TX queue lock.
- * @dma_unmap_len: Length to unmap for an oversize buffer, or 0.
- * @dma_addr: The DMA address of the header below.
- *
- * This controls the memory used for a TSO header.  Use TSOH_DATA()
- * to find the packet header data.  Use TSOH_SIZE() to calculate the
- * total size required for a given packet header length.  TSO headers
- * in the free list are exactly %TSOH_STD_SIZE bytes in size.
- */
-struct efx_tso_header {
-	union {
-		struct efx_tso_header *next;
-		size_t unmap_len;
-	};
-	dma_addr_t dma_addr;
-};
-
 static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
 			       struct sk_buff *skb);
-static void efx_fini_tso(struct efx_tx_queue *tx_queue);
-static void efx_tsoh_heap_free(struct efx_tx_queue *tx_queue,
-			       struct efx_tso_header *tsoh);
-
-static void efx_tsoh_free(struct efx_tx_queue *tx_queue,
-			  struct efx_tx_buffer *buffer)
-{
-	if (buffer->flags & EFX_TX_BUF_TSOH) {
-		if (likely(!buffer->tsoh->unmap_len)) {
-			buffer->tsoh->next = tx_queue->tso_headers_free;
-			tx_queue->tso_headers_free = buffer->tsoh;
-		} else {
-			efx_tsoh_heap_free(tx_queue, buffer->tsoh);
-		}
-		buffer->flags &= ~EFX_TX_BUF_TSOH;
-	}
-}
-
 
 static inline unsigned
 efx_max_tx_len(struct efx_nic *efx, dma_addr_t dma_addr)
@@ -245,7 +210,6 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 		do {
 			insert_ptr = tx_queue->insert_count & tx_queue->ptr_mask;
 			buffer = &tx_queue->buffer[insert_ptr];
-			efx_tsoh_free(tx_queue, buffer);
 			EFX_BUG_ON_PARANOID(buffer->flags);
 			EFX_BUG_ON_PARANOID(buffer->len);
 			EFX_BUG_ON_PARANOID(buffer->unmap_len);
@@ -309,7 +273,6 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
 		insert_ptr = tx_queue->insert_count & tx_queue->ptr_mask;
 		buffer = &tx_queue->buffer[insert_ptr];
 		efx_dequeue_buffer(tx_queue, buffer, &pkts_compl, &bytes_compl);
-		buffer->len = 0;
 	}
 
 	/* Free the fragment we were mid-way through pushing */
@@ -352,7 +315,6 @@ static void efx_dequeue_buffers(struct efx_tx_queue *tx_queue,
 		}
 
 		efx_dequeue_buffer(tx_queue, buffer, pkts_compl, bytes_compl);
-		buffer->len = 0;
 
 		++tx_queue->read_count;
 		read_ptr = tx_queue->read_count & tx_queue->ptr_mask;
@@ -495,6 +457,21 @@ void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index)
 	}
 }
 
+/* Size of page-based TSO header buffers.  Larger blocks must be
+ * allocated from the heap.
+ */
+#define TSOH_STD_SIZE	128
+#define TSOH_PER_PAGE	(PAGE_SIZE / TSOH_STD_SIZE)
+
+/* At most half the descriptors in the queue at any time will refer to
+ * a TSO header buffer, since they must always be followed by a
+ * payload descriptor referring to an skb.
+ */
+static unsigned int efx_tsoh_page_count(struct efx_tx_queue *tx_queue)
+{
+	return DIV_ROUND_UP(tx_queue->ptr_mask + 1, 2 * TSOH_PER_PAGE);
+}
+
 int efx_probe_tx_queue(struct efx_tx_queue *tx_queue)
 {
 	struct efx_nic *efx = tx_queue->efx;
@@ -516,14 +493,27 @@ int efx_probe_tx_queue(struct efx_tx_queue *tx_queue)
 	if (!tx_queue->buffer)
 		return -ENOMEM;
 
+	if (tx_queue->queue & EFX_TXQ_TYPE_OFFLOAD) {
+		tx_queue->tsoh_page =
+			kcalloc(efx_tsoh_page_count(tx_queue),
+				sizeof(tx_queue->tsoh_page[0]), GFP_KERNEL);
+		if (!tx_queue->tsoh_page) {
+			rc = -ENOMEM;
+			goto fail1;
+		}
+	}
+
 	/* Allocate hardware ring */
 	rc = efx_nic_probe_tx(tx_queue);
 	if (rc)
-		goto fail;
+		goto fail2;
 
 	return 0;
 
- fail:
+fail2:
+	kfree(tx_queue->tsoh_page);
+	tx_queue->tsoh_page = NULL;
+fail1:
 	kfree(tx_queue->buffer);
 	tx_queue->buffer = NULL;
 	return rc;
@@ -559,7 +549,6 @@ void efx_release_tx_buffers(struct efx_tx_queue *tx_queue)
 		unsigned int pkts_compl = 0, bytes_compl = 0;
 		buffer = &tx_queue->buffer[tx_queue->read_count & tx_queue->ptr_mask];
 		efx_dequeue_buffer(tx_queue, buffer, &pkts_compl, &bytes_compl);
-		buffer->len = 0;
 
 		++tx_queue->read_count;
 	}
@@ -580,13 +569,12 @@ void efx_fini_tx_queue(struct efx_tx_queue *tx_queue)
 	efx_nic_fini_tx(tx_queue);
 
 	efx_release_tx_buffers(tx_queue);
-
-	/* Free up TSO header cache */
-	efx_fini_tso(tx_queue);
 }
 
 void efx_remove_tx_queue(struct efx_tx_queue *tx_queue)
 {
+	int i;
+
 	if (!tx_queue->buffer)
 		return;
 
@@ -594,6 +582,14 @@ void efx_remove_tx_queue(struct efx_tx_queue *tx_queue)
 		  "destroying TX queue %d\n", tx_queue->queue);
 	efx_nic_remove_tx(tx_queue);
 
+	if (tx_queue->tsoh_page) {
+		for (i = 0; i < efx_tsoh_page_count(tx_queue); i++)
+			efx_nic_free_buffer(tx_queue->efx,
+					    &tx_queue->tsoh_page[i]);
+		kfree(tx_queue->tsoh_page);
+		tx_queue->tsoh_page = NULL;
+	}
+
 	kfree(tx_queue->buffer);
 	tx_queue->buffer = NULL;
 }
@@ -616,17 +612,6 @@ void efx_remove_tx_queue(struct efx_tx_queue *tx_queue)
 #define TSOH_OFFSET	NET_IP_ALIGN
 #endif
 
-#define TSOH_BUFFER(tsoh)	((u8 *)(tsoh + 1) + TSOH_OFFSET)
-
-/* Total size of struct efx_tso_header, buffer and padding */
-#define TSOH_SIZE(hdr_len)					\
-	(sizeof(struct efx_tso_header) + TSOH_OFFSET + hdr_len)
-
-/* Size of blocks on free list.  Larger blocks must be allocated from
- * the heap.
- */
-#define TSOH_STD_SIZE		128
-
 #define PTR_DIFF(p1, p2)  ((u8 *)(p1) - (u8 *)(p2))
 #define ETH_HDR_LEN(skb)  (skb_network_header(skb) - (skb)->data)
 #define SKB_TCP_OFF(skb)  PTR_DIFF(tcp_hdr(skb), (skb)->data)
@@ -699,91 +684,43 @@ static __be16 efx_tso_check_protocol(struct sk_buff *skb)
 	return protocol;
 }
 
-
-/*
- * Allocate a page worth of efx_tso_header structures, and string them
- * into the tx_queue->tso_headers_free linked list. Return 0 or -ENOMEM.
- */
-static int efx_tsoh_block_alloc(struct efx_tx_queue *tx_queue)
+static u8 *efx_tsoh_get_buffer(struct efx_tx_queue *tx_queue,
+			       struct efx_tx_buffer *buffer, unsigned int len)
 {
-	struct device *dma_dev = &tx_queue->efx->pci_dev->dev;
-	struct efx_tso_header *tsoh;
-	dma_addr_t dma_addr;
-	u8 *base_kva, *kva;
+	u8 *result;
 
-	base_kva = dma_alloc_coherent(dma_dev, PAGE_SIZE, &dma_addr, GFP_ATOMIC);
-	if (base_kva == NULL) {
-		netif_err(tx_queue->efx, tx_err, tx_queue->efx->net_dev,
-			  "Unable to allocate page for TSO headers\n");
-		return -ENOMEM;
-	}
-
-	/* dma_alloc_coherent() allocates pages. */
-	EFX_BUG_ON_PARANOID(dma_addr & (PAGE_SIZE - 1u));
-
-	for (kva = base_kva; kva < base_kva + PAGE_SIZE; kva += TSOH_STD_SIZE) {
-		tsoh = (struct efx_tso_header *)kva;
-		tsoh->dma_addr = dma_addr + (TSOH_BUFFER(tsoh) - base_kva);
-		tsoh->next = tx_queue->tso_headers_free;
-		tx_queue->tso_headers_free = tsoh;
-	}
-
-	return 0;
-}
-
-
-/* Free up a TSO header, and all others in the same page. */
-static void efx_tsoh_block_free(struct efx_tx_queue *tx_queue,
-				struct efx_tso_header *tsoh,
-				struct device *dma_dev)
-{
-	struct efx_tso_header **p;
-	unsigned long base_kva;
-	dma_addr_t base_dma;
+	EFX_BUG_ON_PARANOID(buffer->len);
+	EFX_BUG_ON_PARANOID(buffer->flags);
+	EFX_BUG_ON_PARANOID(buffer->unmap_len);
 
-	base_kva = (unsigned long)tsoh & PAGE_MASK;
-	base_dma = tsoh->dma_addr & PAGE_MASK;
+	if (likely(len <= TSOH_STD_SIZE - TSOH_OFFSET)) {
+		unsigned index =
+			(tx_queue->insert_count & tx_queue->ptr_mask) / 2;
+		struct efx_buffer *page_buf =
+			&tx_queue->tsoh_page[index / TSOH_PER_PAGE];
+		unsigned offset =
+			TSOH_STD_SIZE * (index % TSOH_PER_PAGE) + TSOH_OFFSET;
 
-	p = &tx_queue->tso_headers_free;
-	while (*p != NULL) {
-		if (((unsigned long)*p & PAGE_MASK) == base_kva)
-			*p = (*p)->next;
-		else
-			p = &(*p)->next;
-	}
+		if (unlikely(!page_buf->addr) &&
+		    efx_nic_alloc_buffer(tx_queue->efx, page_buf, PAGE_SIZE))
+			return NULL;
 
-	dma_free_coherent(dma_dev, PAGE_SIZE, (void *)base_kva, base_dma);
-}
+		result = (u8 *)page_buf->addr + offset;
+		buffer->dma_addr = page_buf->dma_addr + offset;
+		buffer->flags = EFX_TX_BUF_CONT;
+	} else {
+		tx_queue->tso_long_headers++;
 
-static struct efx_tso_header *
-efx_tsoh_heap_alloc(struct efx_tx_queue *tx_queue, size_t header_len)
-{
-	struct efx_tso_header *tsoh;
-
-	tsoh = kmalloc(TSOH_SIZE(header_len), GFP_ATOMIC | GFP_DMA);
-	if (unlikely(!tsoh))
-		return NULL;
-
-	tsoh->dma_addr = dma_map_single(&tx_queue->efx->pci_dev->dev,
-					TSOH_BUFFER(tsoh), header_len,
-					DMA_TO_DEVICE);
-	if (unlikely(dma_mapping_error(&tx_queue->efx->pci_dev->dev,
-				       tsoh->dma_addr))) {
-		kfree(tsoh);
-		return NULL;
+		buffer->heap_buf = kmalloc(TSOH_OFFSET + len, GFP_ATOMIC);
+		if (unlikely(!buffer->heap_buf))
+			return NULL;
+		result = (u8 *)buffer->heap_buf + TSOH_OFFSET;
+		buffer->flags = EFX_TX_BUF_CONT | EFX_TX_BUF_HEAP;
 	}
 
-	tsoh->unmap_len = header_len;
-	return tsoh;
-}
+	buffer->len = len;
 
-static void
-efx_tsoh_heap_free(struct efx_tx_queue *tx_queue, struct efx_tso_header *tsoh)
-{
-	dma_unmap_single(&tx_queue->efx->pci_dev->dev,
-			 tsoh->dma_addr, tsoh->unmap_len,
-			 DMA_TO_DEVICE);
-	kfree(tsoh);
+	return result;
 }
 
 /**
@@ -814,7 +751,6 @@ static void efx_tx_queue_insert(struct efx_tx_queue *tx_queue,
 				    tx_queue->read_count >=
 				    efx->txq_entries);
 
-		efx_tsoh_free(tx_queue, buffer);
 		EFX_BUG_ON_PARANOID(buffer->len);
 		EFX_BUG_ON_PARANOID(buffer->unmap_len);
 		EFX_BUG_ON_PARANOID(buffer->flags);
@@ -846,53 +782,42 @@ static void efx_tx_queue_insert(struct efx_tx_queue *tx_queue,
  * a single fragment, and we know it doesn't cross a page boundary.  It
  * also allows us to not worry about end-of-packet etc.
  */
-static void efx_tso_put_header(struct efx_tx_queue *tx_queue,
-			       struct efx_tso_header *tsoh, unsigned len)
+static int efx_tso_put_header(struct efx_tx_queue *tx_queue,
+			      struct efx_tx_buffer *buffer, u8 *header)
 {
-	struct efx_tx_buffer *buffer;
-
-	buffer = &tx_queue->buffer[tx_queue->insert_count & tx_queue->ptr_mask];
-	efx_tsoh_free(tx_queue, buffer);
-	EFX_BUG_ON_PARANOID(buffer->len);
-	EFX_BUG_ON_PARANOID(buffer->unmap_len);
-	EFX_BUG_ON_PARANOID(buffer->flags);
-	buffer->len = len;
-	buffer->dma_addr = tsoh->dma_addr;
-	buffer->tsoh = tsoh;
-	buffer->flags = EFX_TX_BUF_TSOH | EFX_TX_BUF_CONT;
+	if (unlikely(buffer->flags & EFX_TX_BUF_HEAP)) {
+		buffer->dma_addr = dma_map_single(&tx_queue->efx->pci_dev->dev,
+						  header, buffer->len,
+						  DMA_TO_DEVICE);
+		if (unlikely(dma_mapping_error(&tx_queue->efx->pci_dev->dev,
+					       buffer->dma_addr))) {
+			kfree(buffer->heap_buf);
+			buffer->len = 0;
+			buffer->flags = 0;
+			return -ENOMEM;
+		}
+		buffer->unmap_len = buffer->len;
+		buffer->flags |= EFX_TX_BUF_MAP_SINGLE;
+	}
 
 	++tx_queue->insert_count;
+	return 0;
 }
 
 
-/* Remove descriptors put into a tx_queue. */
+/* Remove buffers put into a tx_queue.  None of the buffers must have
+ * an skb attached.
+ */
 static void efx_enqueue_unwind(struct efx_tx_queue *tx_queue)
 {
 	struct efx_tx_buffer *buffer;
-	dma_addr_t unmap_addr;
 
 	/* Work backwards until we hit the original insert pointer value */
 	while (tx_queue->insert_count != tx_queue->write_count) {
 		--tx_queue->insert_count;
 		buffer = &tx_queue->buffer[tx_queue->insert_count &
 					   tx_queue->ptr_mask];
-		efx_tsoh_free(tx_queue, buffer);
-		EFX_BUG_ON_PARANOID(buffer->flags & EFX_TX_BUF_SKB);
-		if (buffer->unmap_len) {
-			unmap_addr = (buffer->dma_addr + buffer->len -
-				      buffer->unmap_len);
-			if (buffer->flags & EFX_TX_BUF_MAP_SINGLE)
-				dma_unmap_single(&tx_queue->efx->pci_dev->dev,
-						 unmap_addr, buffer->unmap_len,
-						 DMA_TO_DEVICE);
-			else
-				dma_unmap_page(&tx_queue->efx->pci_dev->dev,
-					       unmap_addr, buffer->unmap_len,
-					       DMA_TO_DEVICE);
-			buffer->unmap_len = 0;
-		}
-		buffer->len = 0;
-		buffer->flags = 0;
+		efx_dequeue_buffer(tx_queue, buffer, NULL, NULL);
 	}
 }
 
@@ -1014,35 +939,24 @@ static void tso_fill_packet_with_fragment(struct efx_tx_queue *tx_queue,
  * @st:			TSO state
  *
  * Generate a new header and prepare for the new packet.  Return 0 on
- * success, or -1 if failed to alloc header.
+ * success, or -%ENOMEM if failed to alloc header.
  */
 static int tso_start_new_packet(struct efx_tx_queue *tx_queue,
 				const struct sk_buff *skb,
 				struct tso_state *st)
 {
-	struct efx_tso_header *tsoh;
+	struct efx_tx_buffer *buffer =
+		&tx_queue->buffer[tx_queue->insert_count & tx_queue->ptr_mask];
 	struct tcphdr *tsoh_th;
 	unsigned ip_length;
 	u8 *header;
+	int rc;
 
-	/* Allocate a DMA-mapped header buffer. */
-	if (likely(TSOH_SIZE(st->header_len) <= TSOH_STD_SIZE)) {
-		if (tx_queue->tso_headers_free == NULL) {
-			if (efx_tsoh_block_alloc(tx_queue))
-				return -1;
-		}
-		EFX_BUG_ON_PARANOID(!tx_queue->tso_headers_free);
-		tsoh = tx_queue->tso_headers_free;
-		tx_queue->tso_headers_free = tsoh->next;
-		tsoh->unmap_len = 0;
-	} else {
-		tx_queue->tso_long_headers++;
-		tsoh = efx_tsoh_heap_alloc(tx_queue, st->header_len);
-		if (unlikely(!tsoh))
-			return -1;
-	}
+	/* Allocate and insert a DMA-mapped header buffer. */
+	header = efx_tsoh_get_buffer(tx_queue, buffer, st->header_len);
+	if (!header)
+		return -ENOMEM;
 
-	header = TSOH_BUFFER(tsoh);
 	tsoh_th = (struct tcphdr *)(header + SKB_TCP_OFF(skb));
 
 	/* Copy and update the headers. */
@@ -1078,12 +992,13 @@ static int tso_start_new_packet(struct efx_tx_queue *tx_queue,
 		tsoh_iph->payload_len = htons(ip_length - sizeof(*tsoh_iph));
 	}
 
+	rc = efx_tso_put_header(tx_queue, buffer, header);
+	if (unlikely(rc))
+		return rc;
+
 	st->packet_space = skb_shinfo(skb)->gso_size;
 	++tx_queue->tso_packets;
 
-	/* Form a descriptor for this header. */
-	efx_tso_put_header(tx_queue, tsoh, st->header_len);
-
 	return 0;
 }
 
@@ -1182,23 +1097,3 @@ static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
 	efx_enqueue_unwind(tx_queue);
 	return NETDEV_TX_OK;
 }
-
-
-/*
- * Free up all TSO datastructures associated with tx_queue. This
- * routine should be called only once the tx_queue is both empty and
- * will no longer be used.
- */
-static void efx_fini_tso(struct efx_tx_queue *tx_queue)
-{
-	unsigned i;
-
-	if (tx_queue->buffer) {
-		for (i = 0; i <= tx_queue->ptr_mask; ++i)
-			efx_tsoh_free(tx_queue, &tx_queue->buffer[i]);
-	}
-
-	while (tx_queue->tso_headers_free != NULL)
-		efx_tsoh_block_free(tx_queue, tx_queue->tso_headers_free,
-				    &tx_queue->efx->pci_dev->dev);
-}
-- 
cgit v1.1


From 53cb13c680b98c637d95dd731b01bc284b3aa33d Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Tue, 19 Jun 2012 20:03:41 +0100
Subject: sfc: Replace tso_state::full_packet_space with ip_base_len

We only use tso_state::full_packet_space to calculate the IPv4 tot_len
or IPv6 payload_len, not to set tso_state::packet_space.  Replace it
with an ip_base_len field holding the value of tot_len or payload_len
before including the TCP payload, which is much more useful when
constructing the new headers.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/tx.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index 61bc0ed..d9dbebc 100644
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -631,7 +631,7 @@ void efx_remove_tx_queue(struct efx_tx_queue *tx_queue)
  * @dma_flags: TX buffer flags for DMA mapping - %EFX_TX_BUF_MAP_SINGLE or 0
  * @protocol: Network protocol (after any VLAN header)
  * @header_len: Number of bytes of header
- * @full_packet_size: Number of bytes to put in each outgoing segment
+ * @ip_base_len: IPv4 tot_len or IPv6 payload_len, before TCP payload
  *
  * The state used during segmentation.  It is put into this data structure
  * just to make it easy to pass into inline functions.
@@ -652,7 +652,7 @@ struct tso_state {
 
 	__be16 protocol;
 	unsigned header_len;
-	int full_packet_size;
+	unsigned int ip_base_len;
 };
 
 
@@ -830,12 +830,14 @@ static void tso_start(struct tso_state *st, const struct sk_buff *skb)
 	 */
 	st->header_len = ((tcp_hdr(skb)->doff << 2u)
 			  + PTR_DIFF(tcp_hdr(skb), skb->data));
-	st->full_packet_size = st->header_len + skb_shinfo(skb)->gso_size;
 
-	if (st->protocol == htons(ETH_P_IP))
+	if (st->protocol == htons(ETH_P_IP)) {
+		st->ip_base_len = st->header_len - ETH_HDR_LEN(skb);
 		st->ipv4_id = ntohs(ip_hdr(skb)->id);
-	else
+	} else {
+		st->ip_base_len = tcp_hdr(skb)->doff << 2u;
 		st->ipv4_id = 0;
+	}
 	st->seqnum = ntohl(tcp_hdr(skb)->seq);
 
 	EFX_BUG_ON_PARANOID(tcp_hdr(skb)->urg);
@@ -966,15 +968,16 @@ static int tso_start_new_packet(struct efx_tx_queue *tx_queue,
 	st->seqnum += skb_shinfo(skb)->gso_size;
 	if (st->out_len > skb_shinfo(skb)->gso_size) {
 		/* This packet will not finish the TSO burst. */
-		ip_length = st->full_packet_size - ETH_HDR_LEN(skb);
+		st->packet_space = skb_shinfo(skb)->gso_size;
 		tsoh_th->fin = 0;
 		tsoh_th->psh = 0;
 	} else {
 		/* This packet will be the last in the TSO burst. */
-		ip_length = st->header_len - ETH_HDR_LEN(skb) + st->out_len;
+		st->packet_space = st->out_len;
 		tsoh_th->fin = tcp_hdr(skb)->fin;
 		tsoh_th->psh = tcp_hdr(skb)->psh;
 	}
+	ip_length = st->ip_base_len + st->packet_space;
 
 	if (st->protocol == htons(ETH_P_IP)) {
 		struct iphdr *tsoh_iph =
@@ -989,14 +992,13 @@ static int tso_start_new_packet(struct efx_tx_queue *tx_queue,
 		struct ipv6hdr *tsoh_iph =
 			(struct ipv6hdr *)(header + SKB_IPV6_OFF(skb));
 
-		tsoh_iph->payload_len = htons(ip_length - sizeof(*tsoh_iph));
+		tsoh_iph->payload_len = htons(ip_length);
 	}
 
 	rc = efx_tso_put_header(tx_queue, buffer, header);
 	if (unlikely(rc))
 		return rc;
 
-	st->packet_space = skb_shinfo(skb)->gso_size;
 	++tx_queue->tso_packets;
 
 	return 0;
-- 
cgit v1.1


From 9714284f83387d330496758e5c10a649fd9a677d Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 22 Jun 2012 02:44:01 +0100
Subject: sfc: Stash header offsets for TSO in struct tso_state

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/tx.c | 28 ++++++++++++----------------
 1 file changed, 12 insertions(+), 16 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index d9dbebc..ebca75e 100644
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -613,10 +613,6 @@ void efx_remove_tx_queue(struct efx_tx_queue *tx_queue)
 #endif
 
 #define PTR_DIFF(p1, p2)  ((u8 *)(p1) - (u8 *)(p2))
-#define ETH_HDR_LEN(skb)  (skb_network_header(skb) - (skb)->data)
-#define SKB_TCP_OFF(skb)  PTR_DIFF(tcp_hdr(skb), (skb)->data)
-#define SKB_IPV4_OFF(skb) PTR_DIFF(ip_hdr(skb), (skb)->data)
-#define SKB_IPV6_OFF(skb) PTR_DIFF(ipv6_hdr(skb), (skb)->data)
 
 /**
  * struct tso_state - TSO state for an SKB
@@ -630,6 +626,8 @@ void efx_remove_tx_queue(struct efx_tx_queue *tx_queue)
  * @unmap_addr: DMA address of SKB fragment
  * @dma_flags: TX buffer flags for DMA mapping - %EFX_TX_BUF_MAP_SINGLE or 0
  * @protocol: Network protocol (after any VLAN header)
+ * @ip_off: Offset of IP header
+ * @tcp_off: Offset of TCP header
  * @header_len: Number of bytes of header
  * @ip_base_len: IPv4 tot_len or IPv6 payload_len, before TCP payload
  *
@@ -651,6 +649,8 @@ struct tso_state {
 	unsigned short dma_flags;
 
 	__be16 protocol;
+	unsigned int ip_off;
+	unsigned int tcp_off;
 	unsigned header_len;
 	unsigned int ip_base_len;
 };
@@ -825,17 +825,14 @@ static void efx_enqueue_unwind(struct efx_tx_queue *tx_queue)
 /* Parse the SKB header and initialise state. */
 static void tso_start(struct tso_state *st, const struct sk_buff *skb)
 {
-	/* All ethernet/IP/TCP headers combined size is TCP header size
-	 * plus offset of TCP header relative to start of packet.
-	 */
-	st->header_len = ((tcp_hdr(skb)->doff << 2u)
-			  + PTR_DIFF(tcp_hdr(skb), skb->data));
-
+	st->ip_off = skb_network_header(skb) - skb->data;
+	st->tcp_off = skb_transport_header(skb) - skb->data;
+	st->header_len = st->tcp_off + (tcp_hdr(skb)->doff << 2u);
 	if (st->protocol == htons(ETH_P_IP)) {
-		st->ip_base_len = st->header_len - ETH_HDR_LEN(skb);
+		st->ip_base_len = st->header_len - st->ip_off;
 		st->ipv4_id = ntohs(ip_hdr(skb)->id);
 	} else {
-		st->ip_base_len = tcp_hdr(skb)->doff << 2u;
+		st->ip_base_len = st->header_len - st->tcp_off;
 		st->ipv4_id = 0;
 	}
 	st->seqnum = ntohl(tcp_hdr(skb)->seq);
@@ -959,7 +956,7 @@ static int tso_start_new_packet(struct efx_tx_queue *tx_queue,
 	if (!header)
 		return -ENOMEM;
 
-	tsoh_th = (struct tcphdr *)(header + SKB_TCP_OFF(skb));
+	tsoh_th = (struct tcphdr *)(header + st->tcp_off);
 
 	/* Copy and update the headers. */
 	memcpy(header, skb->data, st->header_len);
@@ -980,8 +977,7 @@ static int tso_start_new_packet(struct efx_tx_queue *tx_queue,
 	ip_length = st->ip_base_len + st->packet_space;
 
 	if (st->protocol == htons(ETH_P_IP)) {
-		struct iphdr *tsoh_iph =
-			(struct iphdr *)(header + SKB_IPV4_OFF(skb));
+		struct iphdr *tsoh_iph = (struct iphdr *)(header + st->ip_off);
 
 		tsoh_iph->tot_len = htons(ip_length);
 
@@ -990,7 +986,7 @@ static int tso_start_new_packet(struct efx_tx_queue *tx_queue,
 		st->ipv4_id++;
 	} else {
 		struct ipv6hdr *tsoh_iph =
-			(struct ipv6hdr *)(header + SKB_IPV6_OFF(skb));
+			(struct ipv6hdr *)(header + st->ip_off);
 
 		tsoh_iph->payload_len = htons(ip_length);
 	}
-- 
cgit v1.1


From f16aeea0e679d5fd43fc02e99569c52d77d5e5d3 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 27 Jul 2012 19:31:16 +0100
Subject: sfc: Change state names to be clearer, and comment them

STATE_INIT and STATE_FINI are equivalent and represent incompletely
initialised states; combine them as STATE_UNINIT.

Rename STATE_RUNNING to STATE_READY, to avoid confusion with
netif_running() and IFF_RUNNING.

The comments do not quite match current usage, but this will be
corrected in subsequent fixes.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c           | 24 +++++++++++-------------
 drivers/net/ethernet/sfc/ethtool.c       |  2 +-
 drivers/net/ethernet/sfc/falcon_boards.c |  2 +-
 drivers/net/ethernet/sfc/net_driver.h    | 10 ++++------
 4 files changed, 17 insertions(+), 21 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 3b3f084..9f88ad8 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -202,7 +202,7 @@ static void efx_stop_all(struct efx_nic *efx);
 
 #define EFX_ASSERT_RESET_SERIALISED(efx)		\
 	do {						\
-		if ((efx->state == STATE_RUNNING) ||	\
+		if ((efx->state == STATE_READY) ||	\
 		    (efx->state == STATE_DISABLED))	\
 			ASSERT_RTNL();			\
 	} while (0)
@@ -1556,7 +1556,7 @@ static void efx_start_all(struct efx_nic *efx)
 	 * of these flags are safe to read under just the rtnl lock */
 	if (efx->port_enabled)
 		return;
-	if ((efx->state != STATE_RUNNING) && (efx->state != STATE_INIT))
+	if ((efx->state != STATE_READY) && (efx->state != STATE_UNINIT))
 		return;
 	if (!netif_running(efx->net_dev))
 		return;
@@ -2286,11 +2286,11 @@ static void efx_reset_work(struct work_struct *data)
 	if (!pending)
 		return;
 
-	/* If we're not RUNNING then don't reset. Leave the reset_pending
+	/* If we're not READY then don't reset. Leave the reset_pending
 	 * flags set so that efx_pci_probe_main will be retried */
-	if (efx->state != STATE_RUNNING) {
+	if (efx->state != STATE_READY) {
 		netif_info(efx, drv, efx->net_dev,
-			   "scheduled reset quenched. NIC not RUNNING\n");
+			   "scheduled reset quenched; NIC not ready\n");
 		return;
 	}
 
@@ -2402,7 +2402,7 @@ static int efx_init_struct(struct efx_nic *efx, const struct efx_nic_type *type,
 	INIT_DELAYED_WORK(&efx->selftest_work, efx_selftest_async_work);
 	efx->pci_dev = pci_dev;
 	efx->msg_enable = debug;
-	efx->state = STATE_INIT;
+	efx->state = STATE_UNINIT;
 	strlcpy(efx->name, pci_name(pci_dev), sizeof(efx->name));
 
 	efx->net_dev = net_dev;
@@ -2490,7 +2490,7 @@ static void efx_pci_remove(struct pci_dev *pci_dev)
 
 	/* Mark the NIC as fini, then stop the interface */
 	rtnl_lock();
-	efx->state = STATE_FINI;
+	efx->state = STATE_UNINIT;
 	dev_close(efx->net_dev);
 
 	/* Allow any queued efx_resets() to complete */
@@ -2684,9 +2684,9 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
 		goto fail4;
 	}
 
-	/* Switch to the running state before we expose the device to the OS,
+	/* Switch to the READY state before we expose the device to the OS,
 	 * so that dev_open()|efx_start_all() will actually start the device */
-	efx->state = STATE_RUNNING;
+	efx->state = STATE_READY;
 
 	rc = efx_register_netdev(efx);
 	if (rc)
@@ -2727,7 +2727,7 @@ static int efx_pm_freeze(struct device *dev)
 {
 	struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
 
-	efx->state = STATE_FINI;
+	efx->state = STATE_UNINIT;
 
 	netif_device_detach(efx->net_dev);
 
@@ -2741,8 +2741,6 @@ static int efx_pm_thaw(struct device *dev)
 {
 	struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
 
-	efx->state = STATE_INIT;
-
 	efx_start_interrupts(efx, false);
 
 	mutex_lock(&efx->mac_lock);
@@ -2753,7 +2751,7 @@ static int efx_pm_thaw(struct device *dev)
 
 	netif_device_attach(efx->net_dev);
 
-	efx->state = STATE_RUNNING;
+	efx->state = STATE_READY;
 
 	efx->type->resume_wol(efx);
 
diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c
index 8cba2df..5d0e2a3 100644
--- a/drivers/net/ethernet/sfc/ethtool.c
+++ b/drivers/net/ethernet/sfc/ethtool.c
@@ -531,7 +531,7 @@ static void efx_ethtool_self_test(struct net_device *net_dev,
 
 
 	ASSERT_RTNL();
-	if (efx->state != STATE_RUNNING) {
+	if (efx->state != STATE_READY) {
 		rc = -EIO;
 		goto fail1;
 	}
diff --git a/drivers/net/ethernet/sfc/falcon_boards.c b/drivers/net/ethernet/sfc/falcon_boards.c
index 8687a6c..ec1e99d 100644
--- a/drivers/net/ethernet/sfc/falcon_boards.c
+++ b/drivers/net/ethernet/sfc/falcon_boards.c
@@ -380,7 +380,7 @@ static ssize_t set_phy_flash_cfg(struct device *dev,
 		new_mode = PHY_MODE_SPECIAL;
 	if (!((old_mode ^ new_mode) & PHY_MODE_SPECIAL)) {
 		err = 0;
-	} else if (efx->state != STATE_RUNNING || netif_running(efx->net_dev)) {
+	} else if (efx->state != STATE_READY || netif_running(efx->net_dev)) {
 		err = -EBUSY;
 	} else {
 		/* Reset the PHY, reconfigure the MAC and enable/disable
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index a4fe9a7..7ab1232 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -430,11 +430,9 @@ enum efx_int_mode {
 #define EFX_INT_MODE_USE_MSI(x) (((x)->interrupt_mode) <= EFX_INT_MODE_MSI)
 
 enum nic_state {
-	STATE_INIT = 0,
-	STATE_RUNNING = 1,
-	STATE_FINI = 2,
-	STATE_DISABLED = 3,
-	STATE_MAX,
+	STATE_UNINIT = 0,	/* device being probed/removed or is frozen */
+	STATE_READY = 1,	/* hardware ready and netdev registered */
+	STATE_DISABLED = 2,	/* device disabled due to hardware errors */
 };
 
 /*
@@ -654,7 +652,7 @@ struct vfdi_status;
  * @irq_rx_adaptive: Adaptive IRQ moderation enabled for RX event queues
  * @irq_rx_moderation: IRQ moderation time for RX event queues
  * @msg_enable: Log message enable flags
- * @state: Device state flag. Serialised by the rtnl_lock.
+ * @state: Device state number (%STATE_*). Serialised by the rtnl_lock.
  * @reset_pending: Bitmask for pending resets
  * @tx_queue: TX DMA queues
  * @rx_queue: RX DMA queues
-- 
cgit v1.1


From 61da026d86517def727eb67d7cb8ee5657a12dd9 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 27 Jul 2012 19:35:39 +0100
Subject: sfc: Hold the RTNL lock for more of the suspend/resume cycle

I don't think these PM functions can race with userland net device
operations, but it's much easier to reason about locking if state is
consistently guarded by the same lock.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 9f88ad8..e5f3a17 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -2727,6 +2727,8 @@ static int efx_pm_freeze(struct device *dev)
 {
 	struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
 
+	rtnl_lock();
+
 	efx->state = STATE_UNINIT;
 
 	netif_device_detach(efx->net_dev);
@@ -2734,6 +2736,8 @@ static int efx_pm_freeze(struct device *dev)
 	efx_stop_all(efx);
 	efx_stop_interrupts(efx, false);
 
+	rtnl_unlock();
+
 	return 0;
 }
 
@@ -2741,6 +2745,8 @@ static int efx_pm_thaw(struct device *dev)
 {
 	struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
 
+	rtnl_lock();
+
 	efx_start_interrupts(efx, false);
 
 	mutex_lock(&efx->mac_lock);
@@ -2755,6 +2761,8 @@ static int efx_pm_thaw(struct device *dev)
 
 	efx->type->resume_wol(efx);
 
+	rtnl_unlock();
+
 	/* Reschedule any quenched resets scheduled during efx_pm_freeze() */
 	queue_work(reset_workqueue, &efx->reset_work);
 
-- 
cgit v1.1


From 6032fb56c546c0a14856dc57a92d84560816b217 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 27 Jul 2012 19:35:47 +0100
Subject: sfc: Keep disabled NICs quiescent during suspend/resume

Currently we ignore and clear the disabled state.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index e5f3a17..f02591b 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -2729,12 +2729,14 @@ static int efx_pm_freeze(struct device *dev)
 
 	rtnl_lock();
 
-	efx->state = STATE_UNINIT;
+	if (efx->state != STATE_DISABLED) {
+		efx->state = STATE_UNINIT;
 
-	netif_device_detach(efx->net_dev);
+		netif_device_detach(efx->net_dev);
 
-	efx_stop_all(efx);
-	efx_stop_interrupts(efx, false);
+		efx_stop_all(efx);
+		efx_stop_interrupts(efx, false);
+	}
 
 	rtnl_unlock();
 
@@ -2747,19 +2749,21 @@ static int efx_pm_thaw(struct device *dev)
 
 	rtnl_lock();
 
-	efx_start_interrupts(efx, false);
+	if (efx->state != STATE_DISABLED) {
+		efx_start_interrupts(efx, false);
 
-	mutex_lock(&efx->mac_lock);
-	efx->phy_op->reconfigure(efx);
-	mutex_unlock(&efx->mac_lock);
+		mutex_lock(&efx->mac_lock);
+		efx->phy_op->reconfigure(efx);
+		mutex_unlock(&efx->mac_lock);
 
-	efx_start_all(efx);
+		efx_start_all(efx);
 
-	netif_device_attach(efx->net_dev);
+		netif_device_attach(efx->net_dev);
 
-	efx->state = STATE_READY;
+		efx->state = STATE_READY;
 
-	efx->type->resume_wol(efx);
+		efx->type->resume_wol(efx);
+	}
 
 	rtnl_unlock();
 
-- 
cgit v1.1


From 5642ceef466365ebc94eb1332d9e6228efa09518 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 27 Jul 2012 19:35:52 +0100
Subject: sfc: Hold RTNL lock (only) when calling efx_stop_interrupts()

Interrupt state should be consistently guarded by the RTNL lock once
the net device is registered.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index f02591b..629029e 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -2164,9 +2164,9 @@ void efx_reset_down(struct efx_nic *efx, enum reset_type method)
 	EFX_ASSERT_RESET_SERIALISED(efx);
 
 	efx_stop_all(efx);
-	mutex_lock(&efx->mac_lock);
-
 	efx_stop_interrupts(efx, false);
+
+	mutex_lock(&efx->mac_lock);
 	if (efx->port_initialized && method != RESET_TYPE_INVISIBLE)
 		efx->phy_op->fini(efx);
 	efx->type->fini(efx);
@@ -2492,11 +2492,11 @@ static void efx_pci_remove(struct pci_dev *pci_dev)
 	rtnl_lock();
 	efx->state = STATE_UNINIT;
 	dev_close(efx->net_dev);
+	efx_stop_interrupts(efx, false);
 
 	/* Allow any queued efx_resets() to complete */
 	rtnl_unlock();
 
-	efx_stop_interrupts(efx, false);
 	efx_sriov_fini(efx);
 	efx_unregister_netdev(efx);
 
-- 
cgit v1.1


From 8b7325b4e29256881117aff8a162e829c79b47e9 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 27 Jul 2012 20:46:41 +0100
Subject: sfc: Never try to stop and start a NIC that is disabled

efx_change_mtu() and efx_realloc_channels() each stop and start much
of the NIC, even if it has been disabled.  Since efx_start_all() is a
no-op when the NIC is disabled, this is probably harmless in the case
of efx_change_mtu(), but efx_realloc_channels() also reenables
interrupts which could be a bad thing to do.

Change efx_start_all() and efx_start_interrupts() to assert that the
NIC is not disabled, but make efx_stop_interrupts() do nothing if the
NIC is disabled (since it is already stopped), consistent with
efx_stop_all().

Update comments for efx_start_all() and efx_stop_all() to describe
their purpose and preconditions more accurately.

Add a common function to check and log if the NIC is disabled, and use
it in efx_net_open(), efx_change_mtu() and efx_realloc_channels().

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c | 65 ++++++++++++++++++++++++++++--------------
 1 file changed, 44 insertions(+), 21 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 629029e..977fc3a 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -207,6 +207,16 @@ static void efx_stop_all(struct efx_nic *efx);
 			ASSERT_RTNL();			\
 	} while (0)
 
+static int efx_check_disabled(struct efx_nic *efx)
+{
+	if (efx->state == STATE_DISABLED) {
+		netif_err(efx, drv, efx->net_dev,
+			  "device is disabled due to earlier errors\n");
+		return -EIO;
+	}
+	return 0;
+}
+
 /**************************************************************************
  *
  * Event queue processing
@@ -740,7 +750,11 @@ efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries)
 	struct efx_channel *other_channel[EFX_MAX_CHANNELS], *channel;
 	u32 old_rxq_entries, old_txq_entries;
 	unsigned i, next_buffer_table = 0;
-	int rc = 0;
+	int rc;
+
+	rc = efx_check_disabled(efx);
+	if (rc)
+		return rc;
 
 	/* Not all channels should be reallocated. We must avoid
 	 * reallocating their buffer table entries.
@@ -1375,6 +1389,8 @@ static void efx_start_interrupts(struct efx_nic *efx, bool may_keep_eventq)
 {
 	struct efx_channel *channel;
 
+	BUG_ON(efx->state == STATE_DISABLED);
+
 	if (efx->legacy_irq)
 		efx->legacy_irq_enabled = true;
 	efx_nic_enable_interrupts(efx);
@@ -1392,6 +1408,9 @@ static void efx_stop_interrupts(struct efx_nic *efx, bool may_keep_eventq)
 {
 	struct efx_channel *channel;
 
+	if (efx->state == STATE_DISABLED)
+		return;
+
 	efx_mcdi_mode_poll(efx);
 
 	efx_nic_disable_interrupts(efx);
@@ -1543,22 +1562,21 @@ static int efx_probe_all(struct efx_nic *efx)
 	return rc;
 }
 
-/* Called after previous invocation(s) of efx_stop_all, restarts the port,
- * kernel transmit queues and NAPI processing, and ensures that the port is
- * scheduled to be reconfigured. This function is safe to call multiple
- * times when the NIC is in any state.
+/* If the interface is supposed to be running but is not, start
+ * the hardware and software data path, regular activity for the port
+ * (MAC statistics, link polling, etc.) and schedule the port to be
+ * reconfigured.  Interrupts must already be enabled.  This function
+ * is safe to call multiple times, so long as the NIC is not disabled.
+ * Requires the RTNL lock.
  */
 static void efx_start_all(struct efx_nic *efx)
 {
 	EFX_ASSERT_RESET_SERIALISED(efx);
+	BUG_ON(efx->state == STATE_DISABLED);
 
 	/* Check that it is appropriate to restart the interface. All
 	 * of these flags are safe to read under just the rtnl lock */
-	if (efx->port_enabled)
-		return;
-	if ((efx->state != STATE_READY) && (efx->state != STATE_UNINIT))
-		return;
-	if (!netif_running(efx->net_dev))
+	if (efx->port_enabled || !netif_running(efx->net_dev))
 		return;
 
 	efx_start_port(efx);
@@ -1592,11 +1610,11 @@ static void efx_flush_all(struct efx_nic *efx)
 	cancel_work_sync(&efx->mac_work);
 }
 
-/* Quiesce hardware and software without bringing the link down.
- * Safe to call multiple times, when the nic and interface is in any
- * state. The caller is guaranteed to subsequently be in a position
- * to modify any hardware and software state they see fit without
- * taking locks. */
+/* Quiesce the hardware and software data path, and regular activity
+ * for the port without bringing the link down.  Safe to call multiple
+ * times with the NIC in almost any state, but interrupts should be
+ * enabled.  Requires the RTNL lock.
+ */
 static void efx_stop_all(struct efx_nic *efx)
 {
 	EFX_ASSERT_RESET_SERIALISED(efx);
@@ -1830,13 +1848,16 @@ static void efx_netpoll(struct net_device *net_dev)
 static int efx_net_open(struct net_device *net_dev)
 {
 	struct efx_nic *efx = netdev_priv(net_dev);
+	int rc;
+
 	EFX_ASSERT_RESET_SERIALISED(efx);
 
 	netif_dbg(efx, ifup, efx->net_dev, "opening device on CPU %d\n",
 		  raw_smp_processor_id());
 
-	if (efx->state == STATE_DISABLED)
-		return -EIO;
+	rc = efx_check_disabled(efx);
+	if (rc)
+		return rc;
 	if (efx->phy_mode & PHY_MODE_SPECIAL)
 		return -EBUSY;
 	if (efx_mcdi_poll_reboot(efx) && efx_reset(efx, RESET_TYPE_ALL))
@@ -1862,10 +1883,8 @@ static int efx_net_stop(struct net_device *net_dev)
 	netif_dbg(efx, ifdown, efx->net_dev, "closing on CPU %d\n",
 		  raw_smp_processor_id());
 
-	if (efx->state != STATE_DISABLED) {
-		/* Stop the device and flush all the channels */
-		efx_stop_all(efx);
-	}
+	/* Stop the device and flush all the channels */
+	efx_stop_all(efx);
 
 	return 0;
 }
@@ -1925,9 +1944,13 @@ static void efx_watchdog(struct net_device *net_dev)
 static int efx_change_mtu(struct net_device *net_dev, int new_mtu)
 {
 	struct efx_nic *efx = netdev_priv(net_dev);
+	int rc;
 
 	EFX_ASSERT_RESET_SERIALISED(efx);
 
+	rc = efx_check_disabled(efx);
+	if (rc)
+		return rc;
 	if (new_mtu > EFX_MAX_MTU)
 		return -EINVAL;
 
-- 
cgit v1.1


From b812f8b7a9b657367eaacab8c34e6711a657a48b Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 27 Jul 2012 20:48:36 +0100
Subject: sfc: Improve log messages in case we abort probe due to a pending
 reset

The current informational message doesn't properly explain what
happens, and could also appear if we defer a reset during
suspend/resume.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 977fc3a..5555e9f 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -2311,11 +2311,8 @@ static void efx_reset_work(struct work_struct *data)
 
 	/* If we're not READY then don't reset. Leave the reset_pending
 	 * flags set so that efx_pci_probe_main will be retried */
-	if (efx->state != STATE_READY) {
-		netif_info(efx, drv, efx->net_dev,
-			   "scheduled reset quenched; NIC not ready\n");
+	if (efx->state != STATE_READY)
 		return;
-	}
 
 	rtnl_lock();
 	(void)efx_reset(efx, fls(pending) - 1);
@@ -2703,6 +2700,8 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
 	 * probably hosed anyway.
 	 */
 	if (efx->reset_pending) {
+		netif_err(efx, probe, efx->net_dev,
+			  "aborting probe due to scheduled reset\n");
 		rc = -EIO;
 		goto fail4;
 	}
-- 
cgit v1.1


From 7153f623ea47f3feb54209d75b80ed09a497cd4a Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 27 Jul 2012 20:50:52 +0100
Subject: sfc: Fix reset vs probe/remove/PM races involving efx_nic::state

We try to defer resets while the device is not READY, but we're not
doing this quite correctly.  In particular, changes to efx_nic::state
are documented as serialised by the RTNL lock, but they aren't.

1. We check whether a reset was requested during probe (suggesting
broken hardware) before we allow requested resets to be scheduled.
This leaves a window where a requested reset would be deferred
indefinitely.

2. Although we cancel the reset work item during device removal,
there are still later operations that can cause it to be scheduled
again.  We need to check the state before scheduling it.

3. Since the state can change between scheduling and running of
the work item, we still need to check it there, and we need to
do so *after* acquiring the RTNL lock which serialises state
changes.

4. We must cancel the reset work item during device removal, if the
state could ever have been READY.  This wasn't done in some of the
failure paths from efx_pci_probe().  Move the cancellation to
efx_pci_remove_main().

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c | 84 +++++++++++++++++++++---------------------
 1 file changed, 43 insertions(+), 41 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 5555e9f..d065340 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -2112,6 +2112,19 @@ static int efx_register_netdev(struct efx_nic *efx)
 
 	rtnl_lock();
 
+	/* Enable resets to be scheduled and check whether any were
+	 * already requested.  If so, the NIC is probably hosed so we
+	 * abort.
+	 */
+	efx->state = STATE_READY;
+	smp_mb(); /* ensure we change state before checking reset_pending */
+	if (efx->reset_pending) {
+		netif_err(efx, probe, efx->net_dev,
+			  "aborting probe due to scheduled reset\n");
+		rc = -EIO;
+		goto fail_locked;
+	}
+
 	rc = dev_alloc_name(net_dev, net_dev->name);
 	if (rc < 0)
 		goto fail_locked;
@@ -2141,14 +2154,14 @@ static int efx_register_netdev(struct efx_nic *efx)
 
 	return 0;
 
+fail_registered:
+	rtnl_lock();
+	unregister_netdevice(net_dev);
 fail_locked:
+	efx->state = STATE_UNINIT;
 	rtnl_unlock();
 	netif_err(efx, drv, efx->net_dev, "could not register net dev\n");
 	return rc;
-
-fail_registered:
-	unregister_netdev(net_dev);
-	return rc;
 }
 
 static void efx_unregister_netdev(struct efx_nic *efx)
@@ -2171,7 +2184,11 @@ static void efx_unregister_netdev(struct efx_nic *efx)
 
 	strlcpy(efx->name, pci_name(efx->pci_dev), sizeof(efx->name));
 	device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_type);
-	unregister_netdev(efx->net_dev);
+
+	rtnl_lock();
+	unregister_netdevice(efx->net_dev);
+	efx->state = STATE_UNINIT;
+	rtnl_unlock();
 }
 
 /**************************************************************************
@@ -2309,13 +2326,15 @@ static void efx_reset_work(struct work_struct *data)
 	if (!pending)
 		return;
 
-	/* If we're not READY then don't reset. Leave the reset_pending
-	 * flags set so that efx_pci_probe_main will be retried */
-	if (efx->state != STATE_READY)
-		return;
-
 	rtnl_lock();
-	(void)efx_reset(efx, fls(pending) - 1);
+
+	/* We checked the state in efx_schedule_reset() but it may
+	 * have changed by now.  Now that we have the RTNL lock,
+	 * it cannot change again.
+	 */
+	if (efx->state == STATE_READY)
+		(void)efx_reset(efx, fls(pending) - 1);
+
 	rtnl_unlock();
 }
 
@@ -2341,6 +2360,13 @@ void efx_schedule_reset(struct efx_nic *efx, enum reset_type type)
 	}
 
 	set_bit(method, &efx->reset_pending);
+	smp_mb(); /* ensure we change reset_pending before checking state */
+
+	/* If we're not READY then just leave the flags set as the cue
+	 * to abort probing or reschedule the reset later.
+	 */
+	if (ACCESS_ONCE(efx->state) != STATE_READY)
+		return;
 
 	/* efx_process_channel() will no longer read events once a
 	 * reset is scheduled. So switch back to poll'd MCDI completions. */
@@ -2485,6 +2511,12 @@ static void efx_fini_struct(struct efx_nic *efx)
  */
 static void efx_pci_remove_main(struct efx_nic *efx)
 {
+	/* Flush reset_work. It can no longer be scheduled since we
+	 * are not READY.
+	 */
+	BUG_ON(efx->state == STATE_READY);
+	cancel_work_sync(&efx->reset_work);
+
 #ifdef CONFIG_RFS_ACCEL
 	free_irq_cpu_rmap(efx->net_dev->rx_cpu_rmap);
 	efx->net_dev->rx_cpu_rmap = NULL;
@@ -2510,11 +2542,8 @@ static void efx_pci_remove(struct pci_dev *pci_dev)
 
 	/* Mark the NIC as fini, then stop the interface */
 	rtnl_lock();
-	efx->state = STATE_UNINIT;
 	dev_close(efx->net_dev);
 	efx_stop_interrupts(efx, false);
-
-	/* Allow any queued efx_resets() to complete */
 	rtnl_unlock();
 
 	efx_sriov_fini(efx);
@@ -2522,12 +2551,6 @@ static void efx_pci_remove(struct pci_dev *pci_dev)
 
 	efx_mtd_remove(efx);
 
-	/* Wait for any scheduled resets to complete. No more will be
-	 * scheduled from this point because efx_stop_all() has been
-	 * called, we are no longer registered with driverlink, and
-	 * the net_device's have been removed. */
-	cancel_work_sync(&efx->reset_work);
-
 	efx_pci_remove_main(efx);
 
 	efx_fini_io(efx);
@@ -2686,30 +2709,9 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
 		goto fail2;
 
 	rc = efx_pci_probe_main(efx);
-
-	/* Serialise against efx_reset(). No more resets will be
-	 * scheduled since efx_stop_all() has been called, and we have
-	 * not and never have been registered.
-	 */
-	cancel_work_sync(&efx->reset_work);
-
 	if (rc)
 		goto fail3;
 
-	/* If there was a scheduled reset during probe, the NIC is
-	 * probably hosed anyway.
-	 */
-	if (efx->reset_pending) {
-		netif_err(efx, probe, efx->net_dev,
-			  "aborting probe due to scheduled reset\n");
-		rc = -EIO;
-		goto fail4;
-	}
-
-	/* Switch to the READY state before we expose the device to the OS,
-	 * so that dev_open()|efx_start_all() will actually start the device */
-	efx->state = STATE_READY;
-
 	rc = efx_register_netdev(efx);
 	if (rc)
 		goto fail4;
-- 
cgit v1.1


From 7bde852afc88909d78e617b70d3e7a3dc6bc04ff Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 27 Jul 2012 20:50:54 +0100
Subject: sfc: Remove overly paranoid locking assertions from netdev operations

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c     | 8 --------
 drivers/net/ethernet/sfc/ethtool.c | 2 --
 2 files changed, 10 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index d065340..b29db127 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -1767,8 +1767,6 @@ static int efx_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd)
 	struct efx_nic *efx = netdev_priv(net_dev);
 	struct mii_ioctl_data *data = if_mii(ifr);
 
-	EFX_ASSERT_RESET_SERIALISED(efx);
-
 	/* Convert phy_id from older PRTAD/DEVAD format */
 	if ((cmd == SIOCGMIIREG || cmd == SIOCSMIIREG) &&
 	    (data->phy_id & 0xfc00) == 0x0400)
@@ -1850,8 +1848,6 @@ static int efx_net_open(struct net_device *net_dev)
 	struct efx_nic *efx = netdev_priv(net_dev);
 	int rc;
 
-	EFX_ASSERT_RESET_SERIALISED(efx);
-
 	netif_dbg(efx, ifup, efx->net_dev, "opening device on CPU %d\n",
 		  raw_smp_processor_id());
 
@@ -1946,8 +1942,6 @@ static int efx_change_mtu(struct net_device *net_dev, int new_mtu)
 	struct efx_nic *efx = netdev_priv(net_dev);
 	int rc;
 
-	EFX_ASSERT_RESET_SERIALISED(efx);
-
 	rc = efx_check_disabled(efx);
 	if (rc)
 		return rc;
@@ -1975,8 +1969,6 @@ static int efx_set_mac_address(struct net_device *net_dev, void *data)
 	struct sockaddr *addr = data;
 	char *new_addr = addr->sa_data;
 
-	EFX_ASSERT_RESET_SERIALISED(efx);
-
 	if (!is_valid_ether_addr(new_addr)) {
 		netif_err(efx, drv, efx->net_dev,
 			  "invalid ethernet MAC address requested: %pM\n",
diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c
index 5d0e2a3..2bd5c2d 100644
--- a/drivers/net/ethernet/sfc/ethtool.c
+++ b/drivers/net/ethernet/sfc/ethtool.c
@@ -529,8 +529,6 @@ static void efx_ethtool_self_test(struct net_device *net_dev,
 	if (!efx_tests)
 		goto fail;
 
-
-	ASSERT_RTNL();
 	if (efx->state != STATE_READY) {
 		rc = -EIO;
 		goto fail1;
-- 
cgit v1.1


From 3f65ea5b2aa0f76a463c85ed39955c26faf4f5a7 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 27 Jul 2012 20:50:57 +0100
Subject: sfc: Remove bogus comment about MTU change and RX buffer overrun

RX DMA is limited by the length specified in each descriptor and not
by the MAC.  Over-length frames may get into the RX FIFO regardless of
the MAC settings, due to a hardware bug, but they will be truncated by
the packet DMA engine and reported as such in the completion event.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c | 2 --
 1 file changed, 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index b29db127..4105a666 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -1953,8 +1953,6 @@ static int efx_change_mtu(struct net_device *net_dev, int new_mtu)
 	netif_dbg(efx, drv, efx->net_dev, "changing MTU to %d\n", new_mtu);
 
 	mutex_lock(&efx->mac_lock);
-	/* Reconfigure the MAC before enabling the dma queues so that
-	 * the RX buffers don't overflow */
 	net_dev->mtu = new_mtu;
 	efx->type->reconfigure_mac(efx);
 	mutex_unlock(&efx->mac_lock);
-- 
cgit v1.1


From adeb15aa1ce3413d461ec0958a979e9d64cd764c Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Thu, 2 Aug 2012 01:39:38 +0100
Subject: sfc: Assign efx and efx->type as early as possible in efx_pci_probe()

We also stop clearing *efx in efx_init_struct().  This is safe because
alloc_etherdev_mq() already clears it for us.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 4105a666..92f0020 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -2422,13 +2422,12 @@ static const struct efx_phy_operations efx_dummy_phy_operations = {
 /* This zeroes out and then fills in the invariants in a struct
  * efx_nic (including all sub-structures).
  */
-static int efx_init_struct(struct efx_nic *efx, const struct efx_nic_type *type,
+static int efx_init_struct(struct efx_nic *efx,
 			   struct pci_dev *pci_dev, struct net_device *net_dev)
 {
 	int i;
 
 	/* Initialise common structures */
-	memset(efx, 0, sizeof(*efx));
 	spin_lock_init(&efx->biu_lock);
 #ifdef CONFIG_SFC_MTD
 	INIT_LIST_HEAD(&efx->mtd_list);
@@ -2455,8 +2454,6 @@ static int efx_init_struct(struct efx_nic *efx, const struct efx_nic_type *type,
 			goto fail;
 	}
 
-	efx->type = type;
-
 	EFX_BUG_ON_PARANOID(efx->type->phys_addr_channels > EFX_MAX_CHANNELS);
 
 	/* Higher numbered interrupt modes are less capable! */
@@ -2660,7 +2657,6 @@ static int efx_pci_probe_main(struct efx_nic *efx)
 static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
 				   const struct pci_device_id *entry)
 {
-	const struct efx_nic_type *type = (const struct efx_nic_type *) entry->driver_data;
 	struct net_device *net_dev;
 	struct efx_nic *efx;
 	int rc;
@@ -2670,10 +2666,12 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
 				     EFX_MAX_RX_QUEUES);
 	if (!net_dev)
 		return -ENOMEM;
-	net_dev->features |= (type->offload_features | NETIF_F_SG |
+	efx = netdev_priv(net_dev);
+	efx->type = (const struct efx_nic_type *) entry->driver_data;
+	net_dev->features |= (efx->type->offload_features | NETIF_F_SG |
 			      NETIF_F_HIGHDMA | NETIF_F_TSO |
 			      NETIF_F_RXCSUM);
-	if (type->offload_features & NETIF_F_V6_CSUM)
+	if (efx->type->offload_features & NETIF_F_V6_CSUM)
 		net_dev->features |= NETIF_F_TSO6;
 	/* Mask for features that also apply to VLAN devices */
 	net_dev->vlan_features |= (NETIF_F_ALL_CSUM | NETIF_F_SG |
@@ -2681,10 +2679,9 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
 				   NETIF_F_RXCSUM);
 	/* All offloads can be toggled */
 	net_dev->hw_features = net_dev->features & ~NETIF_F_HIGHDMA;
-	efx = netdev_priv(net_dev);
 	pci_set_drvdata(pci_dev, efx);
 	SET_NETDEV_DEV(net_dev, &pci_dev->dev);
-	rc = efx_init_struct(efx, type, pci_dev, net_dev);
+	rc = efx_init_struct(efx, pci_dev, net_dev);
 	if (rc)
 		goto fail1;
 
-- 
cgit v1.1


From 8f8b3d518999fd1c342310910aa1e49112c86d05 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 24 Aug 2012 18:04:38 +0100
Subject: sfc: Fix the initial device operstate

Following commit 8f4cccb ('net: Set device operstate at registration
time') it is now correct and preferable to set the carrier off before
registering a device.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/efx.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 92f0020..a606db4 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -2120,6 +2120,9 @@ static int efx_register_netdev(struct efx_nic *efx)
 		goto fail_locked;
 	efx_update_name(efx);
 
+	/* Always start with carrier off; PHY events will detect the link */
+	netif_carrier_off(net_dev);
+
 	rc = register_netdevice(net_dev);
 	if (rc)
 		goto fail_locked;
@@ -2130,9 +2133,6 @@ static int efx_register_netdev(struct efx_nic *efx)
 			efx_init_tx_queue_core_txq(tx_queue);
 	}
 
-	/* Always start with carrier off; PHY events will detect the link */
-	netif_carrier_off(net_dev);
-
 	rtnl_unlock();
 
 	rc = device_create_file(&efx->pci_dev->dev, &dev_attr_phy_type);
-- 
cgit v1.1


From 072a9c48600409d72aeb0d5b29fbb75861a06631 Mon Sep 17 00:00:00 2001
From: Amerigo Wang <amwang@redhat.com>
Date: Fri, 24 Aug 2012 21:41:11 +0000
Subject: netpoll: revert 6bdb7fe3104 and fix be_poll() instead

Against -net.

In the patch "netpoll: re-enable irq in poll_napi()", I tried to
fix the following warning:

[100718.051041] ------------[ cut here ]------------
[100718.051048] WARNING: at kernel/softirq.c:159 local_bh_enable_ip+0x7d/0xb0()
(Not tainted)
[100718.051049] Hardware name: ProLiant BL460c G7
...
[100718.051068] Call Trace:
[100718.051073]  [<ffffffff8106b747>] ? warn_slowpath_common+0x87/0xc0
[100718.051075]  [<ffffffff8106b79a>] ? warn_slowpath_null+0x1a/0x20
[100718.051077]  [<ffffffff810747ed>] ? local_bh_enable_ip+0x7d/0xb0
[100718.051080]  [<ffffffff8150041b>] ? _spin_unlock_bh+0x1b/0x20
[100718.051085]  [<ffffffffa00ee974>] ? be_process_mcc+0x74/0x230 [be2net]
[100718.051088]  [<ffffffffa00ea68c>] ? be_poll_tx_mcc+0x16c/0x290 [be2net]
[100718.051090]  [<ffffffff8144fe76>] ? netpoll_poll_dev+0xd6/0x490
[100718.051095]  [<ffffffffa01d24a5>] ? bond_poll_controller+0x75/0x80 [bonding]
[100718.051097]  [<ffffffff8144fde5>] ? netpoll_poll_dev+0x45/0x490
[100718.051100]  [<ffffffff81161b19>] ? ksize+0x19/0x80
[100718.051102]  [<ffffffff81450437>] ? netpoll_send_skb_on_dev+0x157/0x240

by reenabling IRQ before calling ->poll, but it seems more
problems are introduced after that patch:

http://ozlabs.org/~akpm/stuff/IMG_20120824_122054.jpg
http://marc.info/?l=linux-netdev&m=134563282530588&w=2

So it is safe to fix be2net driver code directly.

This patch reverts the offending commit and fixes be_poll() by
avoid disabling BH there, this is okay because be_poll()
can be called either by poll_napi() which already disables
IRQ, or by net_rx_action() which already disables BH.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Reported-by: Sylvain Munaut <s.munaut@whatever-company.com>
Cc: Sylvain Munaut <s.munaut@whatever-company.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Miller <davem@davemloft.net>
Cc: Sathya Perla <sathya.perla@emulex.com>
Cc: Subbu Seetharaman <subbu.seetharaman@emulex.com>
Cc: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: Cong Wang <amwang@redhat.com>
Tested-by: Sylvain Munaut <s.munaut@whatever-company.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/emulex/benet/be_cmds.c | 6 ++++--
 drivers/net/ethernet/emulex/benet/be_main.c | 2 ++
 2 files changed, 6 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c
index 7fac97b..8c63d06 100644
--- a/drivers/net/ethernet/emulex/benet/be_cmds.c
+++ b/drivers/net/ethernet/emulex/benet/be_cmds.c
@@ -259,7 +259,7 @@ int be_process_mcc(struct be_adapter *adapter)
 	int num = 0, status = 0;
 	struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
 
-	spin_lock_bh(&adapter->mcc_cq_lock);
+	spin_lock(&adapter->mcc_cq_lock);
 	while ((compl = be_mcc_compl_get(adapter))) {
 		if (compl->flags & CQE_FLAGS_ASYNC_MASK) {
 			/* Interpret flags as an async trailer */
@@ -280,7 +280,7 @@ int be_process_mcc(struct be_adapter *adapter)
 	if (num)
 		be_cq_notify(adapter, mcc_obj->cq.id, mcc_obj->rearm_cq, num);
 
-	spin_unlock_bh(&adapter->mcc_cq_lock);
+	spin_unlock(&adapter->mcc_cq_lock);
 	return status;
 }
 
@@ -295,7 +295,9 @@ static int be_mcc_wait_compl(struct be_adapter *adapter)
 		if (be_error(adapter))
 			return -EIO;
 
+		local_bh_disable();
 		status = be_process_mcc(adapter);
+		local_bh_enable();
 
 		if (atomic_read(&mcc_obj->q.used) == 0)
 			break;
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 90a903d8..78b8aa8 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -3763,7 +3763,9 @@ static void be_worker(struct work_struct *work)
 	/* when interrupts are not yet enabled, just reap any pending
 	* mcc completions */
 	if (!netif_running(adapter->netdev)) {
+		local_bh_disable();
 		be_process_mcc(adapter);
+		local_bh_enable();
 		goto reschedule;
 	}
 
-- 
cgit v1.1


From 3683243b2c551e58082b179fd153c7d43ddc503b Mon Sep 17 00:00:00 2001
From: Ian Campbell <Ian.Campbell@citrix.com>
Date: Wed, 22 Aug 2012 00:26:47 +0000
Subject: xen-netfront: use __pskb_pull_tail to ensure linear area is big
 enough on RX

I'm slightly concerned by the "only in exceptional circumstances"
comment on __pskb_pull_tail but the structure of an skb just created
by netfront shouldn't hit any of the especially slow cases.

This approach still does slightly more work than the old way, since if
we pull up the entire first frag we now have to shuffle everything
down where before we just received into the right place in the first
place.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: xen-devel@lists.xensource.com
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/xen-netfront.c | 39 ++++++++++-----------------------------
 1 file changed, 10 insertions(+), 29 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 3089990..650f79a 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -57,8 +57,7 @@
 static const struct ethtool_ops xennet_ethtool_ops;
 
 struct netfront_cb {
-	struct page *page;
-	unsigned offset;
+	int pull_to;
 };
 
 #define NETFRONT_SKB_CB(skb)	((struct netfront_cb *)((skb)->cb))
@@ -867,15 +866,9 @@ static int handle_incoming_queue(struct net_device *dev,
 	struct sk_buff *skb;
 
 	while ((skb = __skb_dequeue(rxq)) != NULL) {
-		struct page *page = NETFRONT_SKB_CB(skb)->page;
-		void *vaddr = page_address(page);
-		unsigned offset = NETFRONT_SKB_CB(skb)->offset;
-
-		memcpy(skb->data, vaddr + offset,
-		       skb_headlen(skb));
+		int pull_to = NETFRONT_SKB_CB(skb)->pull_to;
 
-		if (page != skb_frag_page(&skb_shinfo(skb)->frags[0]))
-			__free_page(page);
+		__pskb_pull_tail(skb, pull_to - skb_headlen(skb));
 
 		/* Ethernet work: Delayed to here as it peeks the header. */
 		skb->protocol = eth_type_trans(skb, dev);
@@ -913,7 +906,6 @@ static int xennet_poll(struct napi_struct *napi, int budget)
 	struct sk_buff_head errq;
 	struct sk_buff_head tmpq;
 	unsigned long flags;
-	unsigned int len;
 	int err;
 
 	spin_lock(&np->rx_lock);
@@ -955,24 +947,13 @@ err:
 			}
 		}
 
-		NETFRONT_SKB_CB(skb)->page =
-			skb_frag_page(&skb_shinfo(skb)->frags[0]);
-		NETFRONT_SKB_CB(skb)->offset = rx->offset;
-
-		len = rx->status;
-		if (len > RX_COPY_THRESHOLD)
-			len = RX_COPY_THRESHOLD;
-		skb_put(skb, len);
+		NETFRONT_SKB_CB(skb)->pull_to = rx->status;
+		if (NETFRONT_SKB_CB(skb)->pull_to > RX_COPY_THRESHOLD)
+			NETFRONT_SKB_CB(skb)->pull_to = RX_COPY_THRESHOLD;
 
-		if (rx->status > len) {
-			skb_shinfo(skb)->frags[0].page_offset =
-				rx->offset + len;
-			skb_frag_size_set(&skb_shinfo(skb)->frags[0], rx->status - len);
-			skb->data_len = rx->status - len;
-		} else {
-			__skb_fill_page_desc(skb, 0, NULL, 0, 0);
-			skb_shinfo(skb)->nr_frags = 0;
-		}
+		skb_shinfo(skb)->frags[0].page_offset = rx->offset;
+		skb_frag_size_set(&skb_shinfo(skb)->frags[0], rx->status);
+		skb->data_len = rx->status;
 
 		i = xennet_fill_frags(np, skb, &tmpq);
 
@@ -999,7 +980,7 @@ err:
 		 * receive throughout using the standard receive
 		 * buffer size was cut by 25%(!!!).
 		 */
-		skb->truesize += skb->data_len - (RX_COPY_THRESHOLD - len);
+		skb->truesize += skb->data_len - RX_COPY_THRESHOLD;
 		skb->len += skb->data_len;
 
 		if (rx->flags & XEN_NETRXF_csum_blank)
-- 
cgit v1.1


From e2c53be223aca36cf93eb6a0f6bafa079e78f52b Mon Sep 17 00:00:00 2001
From: Claudiu Manoil <claudiu.manoil@freescale.com>
Date: Thu, 23 Aug 2012 21:46:25 +0000
Subject: gianfar: fix default tx vlan offload feature flag

Commit -
"b852b72 gianfar: fix bug caused by
87c288c6e9aa31720b72e2bc2d665e24e1653c3e"
disables by default (on mac init) the hw vlan tag insertion.
The "features" flags were not updated to reflect this, and
"ethtool -K" shows tx-vlan-offload to be "on" by default.

Cc: Sebastian Poehn <sebastian.poehn@belden.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/freescale/gianfar.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 4605f72..d3233f5 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -1041,7 +1041,7 @@ static int gfar_probe(struct platform_device *ofdev)
 
 	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_VLAN) {
 		dev->hw_features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
-		dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+		dev->features |= NETIF_F_HW_VLAN_RX;
 	}
 
 	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_EXTENDED_HASH) {
-- 
cgit v1.1


From e92bdf4bf199f582dae8249a21e991db4bf66480 Mon Sep 17 00:00:00 2001
From: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Date: Fri, 24 Aug 2012 01:59:17 +0000
Subject: of/mdio-gpio: Simplify the way device tree support is implemented.

This patch cleans up the way device tree support is added in mdio-gpio
driver. I found lot of code duplication which is not necessary.
Also strangely a new platform driver was also introduced for device tree
support. All this forced me to do this cleanup patch.
After this patch, the driver probe checks the of_node pointer to get the
data from device tree.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/phy/mdio-gpio.c | 132 ++++++++++++++------------------------------
 1 file changed, 40 insertions(+), 92 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/phy/mdio-gpio.c b/drivers/net/phy/mdio-gpio.c
index 7189adf..899274f 100644
--- a/drivers/net/phy/mdio-gpio.c
+++ b/drivers/net/phy/mdio-gpio.c
@@ -28,17 +28,38 @@
 #include <linux/gpio.h>
 #include <linux/mdio-gpio.h>
 
-#ifdef CONFIG_OF_GPIO
 #include <linux/of_gpio.h>
 #include <linux/of_mdio.h>
-#include <linux/of_platform.h>
-#endif
 
 struct mdio_gpio_info {
 	struct mdiobb_ctrl ctrl;
 	int mdc, mdio;
 };
 
+static void *mdio_gpio_of_get_data(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct mdio_gpio_platform_data *pdata;
+	int ret;
+
+	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return NULL;
+
+	ret = of_get_gpio(np, 0);
+	if (ret < 0)
+		return NULL;
+
+	pdata->mdc = ret;
+
+	ret = of_get_gpio(np, 1);
+	if (ret < 0)
+		return NULL;
+	pdata->mdio = ret;
+
+	return pdata;
+}
+
 static void mdio_dir(struct mdiobb_ctrl *ctrl, int dir)
 {
 	struct mdio_gpio_info *bitbang =
@@ -162,10 +183,15 @@ static void __devexit mdio_gpio_bus_destroy(struct device *dev)
 
 static int __devinit mdio_gpio_probe(struct platform_device *pdev)
 {
-	struct mdio_gpio_platform_data *pdata = pdev->dev.platform_data;
+	struct mdio_gpio_platform_data *pdata;
 	struct mii_bus *new_bus;
 	int ret;
 
+	if (pdev->dev.of_node)
+		pdata = mdio_gpio_of_get_data(pdev);
+	else
+		pdata = pdev->dev.platform_data;
+
 	if (!pdata)
 		return -ENODEV;
 
@@ -173,7 +199,11 @@ static int __devinit mdio_gpio_probe(struct platform_device *pdev)
 	if (!new_bus)
 		return -ENODEV;
 
-	ret = mdiobus_register(new_bus);
+	if (pdev->dev.of_node)
+		ret = of_mdiobus_register(new_bus, pdev->dev.of_node);
+	else
+		ret = mdiobus_register(new_bus);
+
 	if (ret)
 		mdio_gpio_bus_deinit(&pdev->dev);
 
@@ -187,112 +217,30 @@ static int __devexit mdio_gpio_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_OF_GPIO
-
-static int __devinit mdio_ofgpio_probe(struct platform_device *ofdev)
-{
-	struct mdio_gpio_platform_data *pdata;
-	struct mii_bus *new_bus;
-	int ret;
-
-	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
-	if (!pdata)
-		return -ENOMEM;
-
-	ret = of_get_gpio(ofdev->dev.of_node, 0);
-	if (ret < 0)
-		goto out_free;
-	pdata->mdc = ret;
-
-	ret = of_get_gpio(ofdev->dev.of_node, 1);
-	if (ret < 0)
-		goto out_free;
-	pdata->mdio = ret;
-
-	new_bus = mdio_gpio_bus_init(&ofdev->dev, pdata, pdata->mdc);
-	if (!new_bus)
-		goto out_free;
-
-	ret = of_mdiobus_register(new_bus, ofdev->dev.of_node);
-	if (ret)
-		mdio_gpio_bus_deinit(&ofdev->dev);
-
-	return ret;
-
-out_free:
-	kfree(pdata);
-	return -ENODEV;
-}
-
-static int __devexit mdio_ofgpio_remove(struct platform_device *ofdev)
-{
-	mdio_gpio_bus_destroy(&ofdev->dev);
-	kfree(ofdev->dev.platform_data);
-
-	return 0;
-}
-
-static struct of_device_id mdio_ofgpio_match[] = {
-	{
-		.compatible = "virtual,mdio-gpio",
-	},
-	{},
-};
-MODULE_DEVICE_TABLE(of, mdio_ofgpio_match);
-
-static struct platform_driver mdio_ofgpio_driver = {
-	.driver = {
-		.name = "mdio-ofgpio",
-		.owner = THIS_MODULE,
-		.of_match_table = mdio_ofgpio_match,
-	},
-	.probe = mdio_ofgpio_probe,
-	.remove = __devexit_p(mdio_ofgpio_remove),
+static struct of_device_id mdio_gpio_of_match[] = {
+	{ .compatible = "virtual,mdio-gpio", },
+	{ /* sentinel */ }
 };
 
-static inline int __init mdio_ofgpio_init(void)
-{
-	return platform_driver_register(&mdio_ofgpio_driver);
-}
-
-static inline void mdio_ofgpio_exit(void)
-{
-	platform_driver_unregister(&mdio_ofgpio_driver);
-}
-#else
-static inline int __init mdio_ofgpio_init(void) { return 0; }
-static inline void mdio_ofgpio_exit(void) { }
-#endif /* CONFIG_OF_GPIO */
-
 static struct platform_driver mdio_gpio_driver = {
 	.probe = mdio_gpio_probe,
 	.remove = __devexit_p(mdio_gpio_remove),
 	.driver		= {
 		.name	= "mdio-gpio",
 		.owner	= THIS_MODULE,
+		.of_match_table = mdio_gpio_of_match,
 	},
 };
 
 static int __init mdio_gpio_init(void)
 {
-	int ret;
-
-	ret = mdio_ofgpio_init();
-	if (ret)
-		return ret;
-
-	ret = platform_driver_register(&mdio_gpio_driver);
-	if (ret)
-		mdio_ofgpio_exit();
-
-	return ret;
+	return platform_driver_register(&mdio_gpio_driver);
 }
 module_init(mdio_gpio_init);
 
 static void __exit mdio_gpio_exit(void)
 {
 	platform_driver_unregister(&mdio_gpio_driver);
-	mdio_ofgpio_exit();
 }
 module_exit(mdio_gpio_exit);
 
-- 
cgit v1.1


From d821a4c4d11ad160925dab2bb009b8444beff484 Mon Sep 17 00:00:00 2001
From: Bruce Allan <bruce.w.allan@intel.com>
Date: Fri, 24 Aug 2012 20:38:11 +0000
Subject: e1000e: DoS while TSO enabled caused by link partner with small MSS

With a low enough MSS on the link partner and TSO enabled locally, the
networking stack can periodically send a very large (e.g.  64KB) TCP
message for which the driver will attempt to use more Tx descriptors than
are available by default in the Tx ring.  This is due to a workaround in
the code that imposes a limit of only 4 MSS-sized segments per descriptor
which appears to be a carry-over from the older e1000 driver and may be
applicable only to some older PCI or PCIx parts which are not supported in
e1000e.  When the driver gets a message that is too large to fit across the
configured number of Tx descriptors, it stops the upper stack from queueing
any more and gets stuck in this state.  After a timeout, the upper stack
assumes the adapter is hung and calls the driver to reset it.

Remove the unnecessary limitation of using up to only 4 MSS-sized segments
per Tx descriptor, and put in a hard failure test to catch when attempting
to check for message sizes larger than would fit in the whole Tx ring.
Refactor the remaining logic that limits the size of data per Tx descriptor
from a seemingly arbitrary 8KB to a limit based on the dynamic size of the
Tx packet buffer as described in the hardware specification.

Also, fix the logic in the check for space in the Tx ring for the next
largest possible packet after the current one has been successfully queued
for transmit, and use the appropriate defines for default ring sizes in
e1000_probe instead of magic values.

This issue goes back to the introduction of e1000e in 2.6.24 when it was
split off from e1000.

Reported-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Cc: Stable <stable@vger.kernel.org> [2.6.24+]
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/intel/e1000e/e1000.h  |  1 +
 drivers/net/ethernet/intel/e1000e/netdev.c | 48 ++++++++++++++----------------
 2 files changed, 24 insertions(+), 25 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/intel/e1000e/e1000.h b/drivers/net/ethernet/intel/e1000e/e1000.h
index cd15332..cb3356c 100644
--- a/drivers/net/ethernet/intel/e1000e/e1000.h
+++ b/drivers/net/ethernet/intel/e1000e/e1000.h
@@ -310,6 +310,7 @@ struct e1000_adapter {
 	 */
 	struct e1000_ring *tx_ring /* One per active queue */
 						____cacheline_aligned_in_smp;
+	u32 tx_fifo_limit;
 
 	struct napi_struct napi;
 
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 46c3b1f..d01a099 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -3517,6 +3517,15 @@ void e1000e_reset(struct e1000_adapter *adapter)
 	}
 
 	/*
+	 * Alignment of Tx data is on an arbitrary byte boundary with the
+	 * maximum size per Tx descriptor limited only to the transmit
+	 * allocation of the packet buffer minus 96 bytes with an upper
+	 * limit of 24KB due to receive synchronization limitations.
+	 */
+	adapter->tx_fifo_limit = min_t(u32, ((er32(PBA) >> 16) << 10) - 96,
+				       24 << 10);
+
+	/*
 	 * Disable Adaptive Interrupt Moderation if 2 full packets cannot
 	 * fit in receive buffer.
 	 */
@@ -4785,12 +4794,9 @@ static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb)
 	return 1;
 }
 
-#define E1000_MAX_PER_TXD	8192
-#define E1000_MAX_TXD_PWR	12
-
 static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb,
 			unsigned int first, unsigned int max_per_txd,
-			unsigned int nr_frags, unsigned int mss)
+			unsigned int nr_frags)
 {
 	struct e1000_adapter *adapter = tx_ring->adapter;
 	struct pci_dev *pdev = adapter->pdev;
@@ -5023,20 +5029,19 @@ static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
 
 static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
 {
+	BUG_ON(size > tx_ring->count);
+
 	if (e1000_desc_unused(tx_ring) >= size)
 		return 0;
 	return __e1000_maybe_stop_tx(tx_ring, size);
 }
 
-#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1)
 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
 				    struct net_device *netdev)
 {
 	struct e1000_adapter *adapter = netdev_priv(netdev);
 	struct e1000_ring *tx_ring = adapter->tx_ring;
 	unsigned int first;
-	unsigned int max_per_txd = E1000_MAX_PER_TXD;
-	unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
 	unsigned int tx_flags = 0;
 	unsigned int len = skb_headlen(skb);
 	unsigned int nr_frags;
@@ -5056,18 +5061,8 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
 	}
 
 	mss = skb_shinfo(skb)->gso_size;
-	/*
-	 * The controller does a simple calculation to
-	 * make sure there is enough room in the FIFO before
-	 * initiating the DMA for each buffer.  The calc is:
-	 * 4 = ceil(buffer len/mss).  To make sure we don't
-	 * overrun the FIFO, adjust the max buffer len if mss
-	 * drops.
-	 */
 	if (mss) {
 		u8 hdr_len;
-		max_per_txd = min(mss << 2, max_per_txd);
-		max_txd_pwr = fls(max_per_txd) - 1;
 
 		/*
 		 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
@@ -5097,12 +5092,12 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
 		count++;
 	count++;
 
-	count += TXD_USE_COUNT(len, max_txd_pwr);
+	count += DIV_ROUND_UP(len, adapter->tx_fifo_limit);
 
 	nr_frags = skb_shinfo(skb)->nr_frags;
 	for (f = 0; f < nr_frags; f++)
-		count += TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb)->frags[f]),
-				       max_txd_pwr);
+		count += DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb)->frags[f]),
+				      adapter->tx_fifo_limit);
 
 	if (adapter->hw.mac.tx_pkt_filtering)
 		e1000_transfer_dhcp_info(adapter, skb);
@@ -5144,15 +5139,18 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
 		tx_flags |= E1000_TX_FLAGS_NO_FCS;
 
 	/* if count is 0 then mapping error has occurred */
-	count = e1000_tx_map(tx_ring, skb, first, max_per_txd, nr_frags, mss);
+	count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit,
+			     nr_frags);
 	if (count) {
 		skb_tx_timestamp(skb);
 
 		netdev_sent_queue(netdev, skb->len);
 		e1000_tx_queue(tx_ring, tx_flags, count);
 		/* Make sure there is space in the ring for the next send. */
-		e1000_maybe_stop_tx(tx_ring, MAX_SKB_FRAGS + 2);
-
+		e1000_maybe_stop_tx(tx_ring,
+				    (MAX_SKB_FRAGS *
+				     DIV_ROUND_UP(PAGE_SIZE,
+						  adapter->tx_fifo_limit) + 2));
 	} else {
 		dev_kfree_skb_any(skb);
 		tx_ring->buffer_info[first].time_stamp = 0;
@@ -6327,8 +6325,8 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
 	adapter->hw.phy.autoneg_advertised = 0x2f;
 
 	/* ring size defaults */
-	adapter->rx_ring->count = 256;
-	adapter->tx_ring->count = 256;
+	adapter->rx_ring->count = E1000_DEFAULT_RXD;
+	adapter->tx_ring->count = E1000_DEFAULT_TXD;
 
 	/*
 	 * Initial Wake on LAN setting - If APM wake is enabled in
-- 
cgit v1.1


From 6cc2ff82492d89f763e69ea6b8681926aceda610 Mon Sep 17 00:00:00 2001
From: Timur Tabi <timur@freescale.com>
Date: Fri, 24 Aug 2012 09:10:53 +0000
Subject: netdev/phy: add MDIO bus multiplexer driven by a memory-mapped device

Add support for an MDIO bus multiplexer controlled by a simple memory-mapped
device, like an FPGA.  The device must be memory-mapped and contain only
8-bit registers (which keeps things simple).

Tested on a Freescale P5020DS board which uses the "PIXIS" FPGA attached
to the localbus.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/phy/Kconfig            |  13 +++
 drivers/net/phy/Makefile           |   1 +
 drivers/net/phy/mdio-mux-mmioreg.c | 170 +++++++++++++++++++++++++++++++++++++
 3 files changed, 184 insertions(+)
 create mode 100644 drivers/net/phy/mdio-mux-mmioreg.c

(limited to 'drivers')

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 3090dc6..983bbf4 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -159,6 +159,19 @@ config MDIO_BUS_MUX_GPIO
 	  several child MDIO busses to a parent bus.  Child bus
 	  selection is under the control of GPIO lines.
 
+config MDIO_BUS_MUX_MMIOREG
+	tristate "Support for MMIO device-controlled MDIO bus multiplexers"
+	depends on OF_MDIO
+	select MDIO_BUS_MUX
+	help
+	  This module provides a driver for MDIO bus multiplexers that
+	  are controlled via a simple memory-mapped device, like an FPGA.
+	  The multiplexer connects one of several child MDIO busses to a
+	  parent bus.  Child bus selection is under the control of one of
+	  the FPGA's registers.
+
+	  Currently, only 8-bit registers are supported.
+
 endif # PHYLIB
 
 config MICREL_KS8995MA
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 6d2dc6c..426674d 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -28,3 +28,4 @@ obj-$(CONFIG_MICREL_KS8995MA)	+= spi_ks8995.o
 obj-$(CONFIG_AMD_PHY)		+= amd.o
 obj-$(CONFIG_MDIO_BUS_MUX)	+= mdio-mux.o
 obj-$(CONFIG_MDIO_BUS_MUX_GPIO)	+= mdio-mux-gpio.o
+obj-$(CONFIG_MDIO_BUS_MUX_MMIOREG) += mdio-mux-mmioreg.o
diff --git a/drivers/net/phy/mdio-mux-mmioreg.c b/drivers/net/phy/mdio-mux-mmioreg.c
new file mode 100644
index 0000000..098239a
--- /dev/null
+++ b/drivers/net/phy/mdio-mux-mmioreg.c
@@ -0,0 +1,170 @@
+/*
+ * Simple memory-mapped device MDIO MUX driver
+ *
+ * Author: Timur Tabi <timur@freescale.com>
+ *
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/device.h>
+#include <linux/of_mdio.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/phy.h>
+#include <linux/mdio-mux.h>
+
+struct mdio_mux_mmioreg_state {
+	void *mux_handle;
+	phys_addr_t phys;
+	uint8_t mask;
+};
+
+/*
+ * MDIO multiplexing switch function
+ *
+ * This function is called by the mdio-mux layer when it thinks the mdio bus
+ * multiplexer needs to switch.
+ *
+ * 'current_child' is the current value of the mux register (masked via
+ * s->mask).
+ *
+ * 'desired_child' is the value of the 'reg' property of the target child MDIO
+ * node.
+ *
+ * The first time this function is called, current_child == -1.
+ *
+ * If current_child == desired_child, then the mux is already set to the
+ * correct bus.
+ */
+static int mdio_mux_mmioreg_switch_fn(int current_child, int desired_child,
+				      void *data)
+{
+	struct mdio_mux_mmioreg_state *s = data;
+
+	if (current_child ^ desired_child) {
+		void *p = ioremap(s->phys, 1);
+		uint8_t x, y;
+
+		if (!p)
+			return -ENOMEM;
+
+		x = ioread8(p);
+		y = (x & ~s->mask) | desired_child;
+		if (x != y) {
+			iowrite8((x & ~s->mask) | desired_child, p);
+			pr_debug("%s: %02x -> %02x\n", __func__, x, y);
+		}
+
+		iounmap(p);
+	}
+
+	return 0;
+}
+
+static int __devinit mdio_mux_mmioreg_probe(struct platform_device *pdev)
+{
+	struct device_node *np2, *np = pdev->dev.of_node;
+	struct mdio_mux_mmioreg_state *s;
+	struct resource res;
+	const __be32 *iprop;
+	int len, ret;
+
+	dev_dbg(&pdev->dev, "probing node %s\n", np->full_name);
+
+	s = devm_kzalloc(&pdev->dev, sizeof(*s), GFP_KERNEL);
+	if (!s)
+		return -ENOMEM;
+
+	ret = of_address_to_resource(np, 0, &res);
+	if (ret) {
+		dev_err(&pdev->dev, "could not obtain memory map for node %s\n",
+			np->full_name);
+		return ret;
+	}
+	s->phys = res.start;
+
+	if (resource_size(&res) != sizeof(uint8_t)) {
+		dev_err(&pdev->dev, "only 8-bit registers are supported\n");
+		return -EINVAL;
+	}
+
+	iprop = of_get_property(np, "mux-mask", &len);
+	if (!iprop || len != sizeof(uint32_t)) {
+		dev_err(&pdev->dev, "missing or invalid mux-mask property\n");
+		return -ENODEV;
+	}
+	if (be32_to_cpup(iprop) > 255) {
+		dev_err(&pdev->dev, "only 8-bit registers are supported\n");
+		return -EINVAL;
+	}
+	s->mask = be32_to_cpup(iprop);
+
+	/*
+	 * Verify that the 'reg' property of each child MDIO bus does not
+	 * set any bits outside of the 'mask'.
+	 */
+	for_each_available_child_of_node(np, np2) {
+		iprop = of_get_property(np2, "reg", &len);
+		if (!iprop || len != sizeof(uint32_t)) {
+			dev_err(&pdev->dev, "mdio-mux child node %s is "
+				"missing a 'reg' property\n", np2->full_name);
+			return -ENODEV;
+		}
+		if (be32_to_cpup(iprop) & ~s->mask) {
+			dev_err(&pdev->dev, "mdio-mux child node %s has "
+				"a 'reg' value with unmasked bits\n",
+				np2->full_name);
+			return -ENODEV;
+		}
+	}
+
+	ret = mdio_mux_init(&pdev->dev, mdio_mux_mmioreg_switch_fn,
+			    &s->mux_handle, s);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register mdio-mux bus %s\n",
+			np->full_name);
+		return ret;
+	}
+
+	pdev->dev.platform_data = s;
+
+	return 0;
+}
+
+static int __devexit mdio_mux_mmioreg_remove(struct platform_device *pdev)
+{
+	struct mdio_mux_mmioreg_state *s = dev_get_platdata(&pdev->dev);
+
+	mdio_mux_uninit(s->mux_handle);
+
+	return 0;
+}
+
+static struct of_device_id mdio_mux_mmioreg_match[] = {
+	{
+		.compatible = "mdio-mux-mmioreg",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, mdio_mux_mmioreg_match);
+
+static struct platform_driver mdio_mux_mmioreg_driver = {
+	.driver = {
+		.name		= "mdio-mux-mmioreg",
+		.owner		= THIS_MODULE,
+		.of_match_table = mdio_mux_mmioreg_match,
+	},
+	.probe		= mdio_mux_mmioreg_probe,
+	.remove		= __devexit_p(mdio_mux_mmioreg_remove),
+};
+
+module_platform_driver(mdio_mux_mmioreg_driver);
+
+MODULE_AUTHOR("Timur Tabi <timur@freescale.com>");
+MODULE_DESCRIPTION("Memory-mapped device MDIO MUX driver");
+MODULE_LICENSE("GPL v2");
-- 
cgit v1.1


From ba9aa134287f6a59886ea91e0dadaa8477dec9c2 Mon Sep 17 00:00:00 2001
From: david decotigny <decot@googlers.com>
Date: Fri, 24 Aug 2012 17:22:51 +0000
Subject: forcedeth: fix buffer overflow

Found by manual code inspection.

Tested: compile, reboot, ethtool -d ethX

Signed-off-by: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/nvidia/forcedeth.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index f45def0..51d19d8 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -4435,7 +4435,7 @@ static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void
 
 	regs->version = FORCEDETH_REGS_VER;
 	spin_lock_irq(&np->lock);
-	for (i = 0; i <= np->register_size/sizeof(u32); i++)
+	for (i = 0; i < np->register_size/sizeof(u32); i++)
 		rbuf[i] = readl(base + i*sizeof(u32));
 	spin_unlock_irq(&np->lock);
 }
-- 
cgit v1.1


From 1ff39eb66b6ba456995fa19185463d7753cd8798 Mon Sep 17 00:00:00 2001
From: david decotigny <decot@googlers.com>
Date: Fri, 24 Aug 2012 17:22:52 +0000
Subject: forcedeth: fix TX timeout caused by TX pause on down link

On some dual-port forcedeth devices such as MCP55 10de:0373 (rev a3),
when autoneg & TX pause are enabled while port is connected but
interface is down, the NIC will eventually freeze (TX timeouts,
network unreachable).

This patch ensures that TX pause is not configured in hardware when
interface is down. The TX pause request will be honored when interface
is later configured.

Tested:
 - hardware is MCP55 device id 10de:0373 (rev a3), dual-port
 - eth0 connected and UP, eth1 connected but DOWN
 - without this patch, following sequence would brick NIC:
      ifconfig eth0 down
      ifconfig eth1 up
      ifconfig eth1 down
      ethtool -A eth1 autoneg off rx on tx off
      ifconfig eth1 up
      ifconfig eth1 down
      ethtool -A eth1 autoneg on rx on tx on
      ifconfig eth1 up
      ifconfig eth1 down
      ifup eth0
      sleep 120  # or longer
      ethtool eth1
   Just in case, sequence to un-brick:
      ifconfig eth0 down
      ethtool -A eth1 autoneg off rx on tx off
      ifconfig eth1 up
      ifconfig eth1 down
      ifup eth0
 - with this patch: no TX timeout after "bricking" sequence above

Details:
 - The following register accesses have been identified as the ones
   causing the NIC to freeze in "bricking" sequence above:
    - write NVREG_TX_PAUSEFRAME_ENABLE_V1 to eth1's register NvRegTxPauseFrame
    - write NVREG_MISC1_PAUSE_TX | NVREG_MISC1_FORCE to eth1's register NvRegMisc1
    - write 0 to eth1's register NvRegTransmitterControl
   This is what this patch avoids.

Signed-off-by: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/nvidia/forcedeth.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 51d19d8..8b82457 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -3409,7 +3409,7 @@ set_speed:
 
 	pause_flags = 0;
 	/* setup pause frame */
-	if (np->duplex != 0) {
+	if (netif_running(dev) && (np->duplex != 0)) {
 		if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
 			adv_pause = adv & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
 			lpa_pause = lpa & (LPA_PAUSE_CAP | LPA_PAUSE_ASYM);
@@ -5455,6 +5455,7 @@ static int nv_close(struct net_device *dev)
 
 	netif_stop_queue(dev);
 	spin_lock_irq(&np->lock);
+	nv_update_pause(dev, 0); /* otherwise stop_tx bricks NIC */
 	nv_stop_rxtx(dev);
 	nv_txrx_reset(dev);
 
-- 
cgit v1.1


From 3f0a1b58ae1fb72dee348564d03f42cca2338ab8 Mon Sep 17 00:00:00 2001
From: david decotigny <decot@googlers.com>
Date: Fri, 24 Aug 2012 17:22:53 +0000
Subject: forcedeth: prevent TX timeouts after reboot

This complements patch "net-forcedeth: fix TX timeout caused by TX
pause on down link" which ensures that a lock-up sequence is not sent
to the NIC. Present patch ensures that if a NIC is already locked-up,
the driver will recover from it when initializing the device.

It does the equivalent of the following recovery sequence:
 - write NVREG_TX_PAUSEFRAME_ENABLE_V1 to eth1's register
   NvRegTxPauseFrame
 - write NVREG_XMITCTL_START to eth1's register
   NvRegTransmitterControl
 - write 0 to eth1's register NvRegTransmitterControl
(this is at the heart of the "unbricking" sequence mentioned in patch
 "net-forcedeth: fix TX timeout caused by TX pause on down link")

Tested:
 - hardware is MCP55 device id 10de:0373 (rev a3), dual-port
 - reboot a kernel without any of patches mentioned
 - freeze the NIC (details on description for commit "net-forcedeth:
   fix TX timeout caused by TX pause on down link")
 - wait 5mn until ping hangs & TX timeout in dmesg
 - reboot on kernel with present patch
 - host is immediatly operational, no TX timeout

Signed-off-by: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/nvidia/forcedeth.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 8b82457..876bece 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -5905,11 +5905,19 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
 		goto out_error;
 	}
 
+	netif_carrier_off(dev);
+
+	/* Some NICs freeze when TX pause is enabled while NIC is
+	 * down, and this stays across warm reboots. The sequence
+	 * below should be enough to recover from that state.
+	 */
+	nv_update_pause(dev, 0);
+	nv_start_tx(dev);
+	nv_stop_tx(dev);
+
 	if (id->driver_data & DEV_HAS_VLAN)
 		nv_vlan_mode(dev, dev->features);
 
-	netif_carrier_off(dev);
-
 	dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",
 		 dev->name, np->phy_oui, np->phyaddr, dev->dev_addr);
 
-- 
cgit v1.1


From e8c75e2c1c6965d071d50620278df78f65cfe082 Mon Sep 17 00:00:00 2001
From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Sat, 25 Aug 2012 22:18:35 +0000
Subject: drivers/net/ethernet/tundra/tsi108_eth.c: delete double assignment

Delete successive assignments to the same location.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression i;
@@

*i = ...;
 i = ...;
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/tundra/tsi108_eth.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/tundra/tsi108_eth.c b/drivers/net/ethernet/tundra/tsi108_eth.c
index 277c93e..8fa947a 100644
--- a/drivers/net/ethernet/tundra/tsi108_eth.c
+++ b/drivers/net/ethernet/tundra/tsi108_eth.c
@@ -1359,7 +1359,6 @@ static int tsi108_open(struct net_device *dev)
 		}
 
 		data->rxskbs[i] = skb;
-		data->rxskbs[i] = skb;
 		data->rxring[i].buf0 = virt_to_phys(data->rxskbs[i]->data);
 		data->rxring[i].misc = TSI108_RX_OWN | TSI108_RX_INT;
 	}
-- 
cgit v1.1


From 395a57385508f7b8b445b6911bfa35bc0ccaa0ff Mon Sep 17 00:00:00 2001
From: "alex.bluesman.smirnov@gmail.com" <alex.bluesman.smirnov@gmail.com>
Date: Sun, 26 Aug 2012 05:10:10 +0000
Subject: drivers/ieee802154/at86rf230: replace the code under _init and _exit
 by macro

The code under _init and _exit functions is similar to the code of
module_spi_driver macro, which is a wrapper to the module_driver macro,
so use it instead.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Cc: Devendra Naga <develkernel412222@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/ieee802154/at86rf230.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

(limited to 'drivers')

diff --git a/drivers/ieee802154/at86rf230.c b/drivers/ieee802154/at86rf230.c
index 5d30940..ba753d8 100644
--- a/drivers/ieee802154/at86rf230.c
+++ b/drivers/ieee802154/at86rf230.c
@@ -952,17 +952,7 @@ static struct spi_driver at86rf230_driver = {
 	.resume     = at86rf230_resume,
 };
 
-static int __init at86rf230_init(void)
-{
-	return spi_register_driver(&at86rf230_driver);
-}
-module_init(at86rf230_init);
-
-static void __exit at86rf230_exit(void)
-{
-	spi_unregister_driver(&at86rf230_driver);
-}
-module_exit(at86rf230_exit);
+module_spi_driver(at86rf230_driver);
 
 MODULE_DESCRIPTION("AT86RF230 Transceiver Driver");
 MODULE_LICENSE("GPL v2");
-- 
cgit v1.1


From 0739d643b8dda866d1011bcfd01008d29593be03 Mon Sep 17 00:00:00 2001
From: "alex.bluesman.smirnov@gmail.com" <alex.bluesman.smirnov@gmail.com>
Date: Sun, 26 Aug 2012 05:10:11 +0000
Subject: drivers/ieee802154: move ieee802154 drivers to net folder

The IEEE 802.15.4 standard represents a networking protocol. I don't
exactly know why drivers for this protocol are stored into the root
'driver' folder, but better will be to store them with other
networking stuff. Currently there are only 3 drivers available for
IEEE 802.15.4 stack, so lets do it now with the smallest overhead.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/Makefile                   |   1 -
 drivers/ieee802154/Kconfig         |  36 --
 drivers/ieee802154/Makefile        |   3 -
 drivers/ieee802154/at86rf230.c     | 958 -------------------------------------
 drivers/ieee802154/fakehard.c      | 449 -----------------
 drivers/ieee802154/fakelb.c        | 294 ------------
 drivers/net/Kconfig                |   4 +-
 drivers/net/Makefile               |   1 +
 drivers/net/ieee802154/Kconfig     |  36 ++
 drivers/net/ieee802154/Makefile    |   3 +
 drivers/net/ieee802154/at86rf230.c | 958 +++++++++++++++++++++++++++++++++++++
 drivers/net/ieee802154/fakehard.c  | 448 +++++++++++++++++
 drivers/net/ieee802154/fakelb.c    | 294 ++++++++++++
 13 files changed, 1742 insertions(+), 1743 deletions(-)
 delete mode 100644 drivers/ieee802154/Kconfig
 delete mode 100644 drivers/ieee802154/Makefile
 delete mode 100644 drivers/ieee802154/at86rf230.c
 delete mode 100644 drivers/ieee802154/fakehard.c
 delete mode 100644 drivers/ieee802154/fakelb.c
 create mode 100644 drivers/net/ieee802154/Kconfig
 create mode 100644 drivers/net/ieee802154/Makefile
 create mode 100644 drivers/net/ieee802154/at86rf230.c
 create mode 100644 drivers/net/ieee802154/fakehard.c
 create mode 100644 drivers/net/ieee802154/fakelb.c

(limited to 'drivers')

diff --git a/drivers/Makefile b/drivers/Makefile
index 5b42184..1ecd1bf 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -120,7 +120,6 @@ obj-$(CONFIG_VHOST_NET)		+= vhost/
 obj-$(CONFIG_VLYNQ)		+= vlynq/
 obj-$(CONFIG_STAGING)		+= staging/
 obj-y				+= platform/
-obj-y				+= ieee802154/
 #common clk code
 obj-y				+= clk/
 
diff --git a/drivers/ieee802154/Kconfig b/drivers/ieee802154/Kconfig
deleted file mode 100644
index 1fc4eef..0000000
--- a/drivers/ieee802154/Kconfig
+++ /dev/null
@@ -1,36 +0,0 @@
-menuconfig IEEE802154_DRIVERS
-	tristate "IEEE 802.15.4 drivers"
-	depends on NETDEVICES && IEEE802154
-	default y
-	---help---
-	  Say Y here to get to see options for IEEE 802.15.4 Low-Rate
-	  Wireless Personal Area Network device drivers. This option alone
-	  does not add any kernel code.
-
-	  If you say N, all options in this submenu will be skipped and
-	  disabled.
-
-config IEEE802154_FAKEHARD
-	tristate "Fake LR-WPAN driver with several interconnected devices"
-	depends on  IEEE802154_DRIVERS
-	---help---
-	  Say Y here to enable the fake driver that serves as an example
-          of HardMAC device driver.
-
-          This driver can also be built as a module. To do so say M here.
-	  The module will be called 'fakehard'.
-
-config IEEE802154_FAKELB
-	depends on IEEE802154_DRIVERS && MAC802154
-	tristate "IEEE 802.15.4 loopback driver"
-	---help---
-	  Say Y here to enable the fake driver that can emulate a net
-	  of several interconnected radio devices.
-
-	  This driver can also be built as a module. To do so say M here.
-	  The module will be called 'fakelb'.
-
-config IEEE802154_AT86RF230
-        depends on IEEE802154_DRIVERS && MAC802154
-        tristate "AT86RF230/231 transceiver driver"
-        depends on SPI
diff --git a/drivers/ieee802154/Makefile b/drivers/ieee802154/Makefile
deleted file mode 100644
index 4f4371d..0000000
--- a/drivers/ieee802154/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-obj-$(CONFIG_IEEE802154_FAKEHARD) += fakehard.o
-obj-$(CONFIG_IEEE802154_FAKELB) += fakelb.o
-obj-$(CONFIG_IEEE802154_AT86RF230) += at86rf230.o
diff --git a/drivers/ieee802154/at86rf230.c b/drivers/ieee802154/at86rf230.c
deleted file mode 100644
index ba753d8..0000000
--- a/drivers/ieee802154/at86rf230.c
+++ /dev/null
@@ -1,958 +0,0 @@
-/*
- * AT86RF230/RF231 driver
- *
- * Copyright (C) 2009-2012 Siemens AG
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Written by:
- * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
- * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/gpio.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
-#include <linux/workqueue.h>
-#include <linux/spinlock.h>
-#include <linux/spi/spi.h>
-#include <linux/spi/at86rf230.h>
-#include <linux/skbuff.h>
-
-#include <net/mac802154.h>
-#include <net/wpan-phy.h>
-
-struct at86rf230_local {
-	struct spi_device *spi;
-	int rstn, slp_tr, dig2;
-
-	u8 part;
-	u8 vers;
-
-	u8 buf[2];
-	struct mutex bmux;
-
-	struct work_struct irqwork;
-	struct completion tx_complete;
-
-	struct ieee802154_dev *dev;
-
-	spinlock_t lock;
-	bool irq_disabled;
-	bool is_tx;
-};
-
-#define	RG_TRX_STATUS	(0x01)
-#define	SR_TRX_STATUS		0x01, 0x1f, 0
-#define	SR_RESERVED_01_3	0x01, 0x20, 5
-#define	SR_CCA_STATUS		0x01, 0x40, 6
-#define	SR_CCA_DONE		0x01, 0x80, 7
-#define	RG_TRX_STATE	(0x02)
-#define	SR_TRX_CMD		0x02, 0x1f, 0
-#define	SR_TRAC_STATUS		0x02, 0xe0, 5
-#define	RG_TRX_CTRL_0	(0x03)
-#define	SR_CLKM_CTRL		0x03, 0x07, 0
-#define	SR_CLKM_SHA_SEL		0x03, 0x08, 3
-#define	SR_PAD_IO_CLKM		0x03, 0x30, 4
-#define	SR_PAD_IO		0x03, 0xc0, 6
-#define	RG_TRX_CTRL_1	(0x04)
-#define	SR_IRQ_POLARITY		0x04, 0x01, 0
-#define	SR_IRQ_MASK_MODE	0x04, 0x02, 1
-#define	SR_SPI_CMD_MODE		0x04, 0x0c, 2
-#define	SR_RX_BL_CTRL		0x04, 0x10, 4
-#define	SR_TX_AUTO_CRC_ON	0x04, 0x20, 5
-#define	SR_IRQ_2_EXT_EN		0x04, 0x40, 6
-#define	SR_PA_EXT_EN		0x04, 0x80, 7
-#define	RG_PHY_TX_PWR	(0x05)
-#define	SR_TX_PWR		0x05, 0x0f, 0
-#define	SR_PA_LT		0x05, 0x30, 4
-#define	SR_PA_BUF_LT		0x05, 0xc0, 6
-#define	RG_PHY_RSSI	(0x06)
-#define	SR_RSSI			0x06, 0x1f, 0
-#define	SR_RND_VALUE		0x06, 0x60, 5
-#define	SR_RX_CRC_VALID		0x06, 0x80, 7
-#define	RG_PHY_ED_LEVEL	(0x07)
-#define	SR_ED_LEVEL		0x07, 0xff, 0
-#define	RG_PHY_CC_CCA	(0x08)
-#define	SR_CHANNEL		0x08, 0x1f, 0
-#define	SR_CCA_MODE		0x08, 0x60, 5
-#define	SR_CCA_REQUEST		0x08, 0x80, 7
-#define	RG_CCA_THRES	(0x09)
-#define	SR_CCA_ED_THRES		0x09, 0x0f, 0
-#define	SR_RESERVED_09_1	0x09, 0xf0, 4
-#define	RG_RX_CTRL	(0x0a)
-#define	SR_PDT_THRES		0x0a, 0x0f, 0
-#define	SR_RESERVED_0a_1	0x0a, 0xf0, 4
-#define	RG_SFD_VALUE	(0x0b)
-#define	SR_SFD_VALUE		0x0b, 0xff, 0
-#define	RG_TRX_CTRL_2	(0x0c)
-#define	SR_OQPSK_DATA_RATE	0x0c, 0x03, 0
-#define	SR_RESERVED_0c_2	0x0c, 0x7c, 2
-#define	SR_RX_SAFE_MODE		0x0c, 0x80, 7
-#define	RG_ANT_DIV	(0x0d)
-#define	SR_ANT_CTRL		0x0d, 0x03, 0
-#define	SR_ANT_EXT_SW_EN	0x0d, 0x04, 2
-#define	SR_ANT_DIV_EN		0x0d, 0x08, 3
-#define	SR_RESERVED_0d_2	0x0d, 0x70, 4
-#define	SR_ANT_SEL		0x0d, 0x80, 7
-#define	RG_IRQ_MASK	(0x0e)
-#define	SR_IRQ_MASK		0x0e, 0xff, 0
-#define	RG_IRQ_STATUS	(0x0f)
-#define	SR_IRQ_0_PLL_LOCK	0x0f, 0x01, 0
-#define	SR_IRQ_1_PLL_UNLOCK	0x0f, 0x02, 1
-#define	SR_IRQ_2_RX_START	0x0f, 0x04, 2
-#define	SR_IRQ_3_TRX_END	0x0f, 0x08, 3
-#define	SR_IRQ_4_CCA_ED_DONE	0x0f, 0x10, 4
-#define	SR_IRQ_5_AMI		0x0f, 0x20, 5
-#define	SR_IRQ_6_TRX_UR		0x0f, 0x40, 6
-#define	SR_IRQ_7_BAT_LOW	0x0f, 0x80, 7
-#define	RG_VREG_CTRL	(0x10)
-#define	SR_RESERVED_10_6	0x10, 0x03, 0
-#define	SR_DVDD_OK		0x10, 0x04, 2
-#define	SR_DVREG_EXT		0x10, 0x08, 3
-#define	SR_RESERVED_10_3	0x10, 0x30, 4
-#define	SR_AVDD_OK		0x10, 0x40, 6
-#define	SR_AVREG_EXT		0x10, 0x80, 7
-#define	RG_BATMON	(0x11)
-#define	SR_BATMON_VTH		0x11, 0x0f, 0
-#define	SR_BATMON_HR		0x11, 0x10, 4
-#define	SR_BATMON_OK		0x11, 0x20, 5
-#define	SR_RESERVED_11_1	0x11, 0xc0, 6
-#define	RG_XOSC_CTRL	(0x12)
-#define	SR_XTAL_TRIM		0x12, 0x0f, 0
-#define	SR_XTAL_MODE		0x12, 0xf0, 4
-#define	RG_RX_SYN	(0x15)
-#define	SR_RX_PDT_LEVEL		0x15, 0x0f, 0
-#define	SR_RESERVED_15_2	0x15, 0x70, 4
-#define	SR_RX_PDT_DIS		0x15, 0x80, 7
-#define	RG_XAH_CTRL_1	(0x17)
-#define	SR_RESERVED_17_8	0x17, 0x01, 0
-#define	SR_AACK_PROM_MODE	0x17, 0x02, 1
-#define	SR_AACK_ACK_TIME	0x17, 0x04, 2
-#define	SR_RESERVED_17_5	0x17, 0x08, 3
-#define	SR_AACK_UPLD_RES_FT	0x17, 0x10, 4
-#define	SR_AACK_FLTR_RES_FT	0x17, 0x20, 5
-#define	SR_RESERVED_17_2	0x17, 0x40, 6
-#define	SR_RESERVED_17_1	0x17, 0x80, 7
-#define	RG_FTN_CTRL	(0x18)
-#define	SR_RESERVED_18_2	0x18, 0x7f, 0
-#define	SR_FTN_START		0x18, 0x80, 7
-#define	RG_PLL_CF	(0x1a)
-#define	SR_RESERVED_1a_2	0x1a, 0x7f, 0
-#define	SR_PLL_CF_START		0x1a, 0x80, 7
-#define	RG_PLL_DCU	(0x1b)
-#define	SR_RESERVED_1b_3	0x1b, 0x3f, 0
-#define	SR_RESERVED_1b_2	0x1b, 0x40, 6
-#define	SR_PLL_DCU_START	0x1b, 0x80, 7
-#define	RG_PART_NUM	(0x1c)
-#define	SR_PART_NUM		0x1c, 0xff, 0
-#define	RG_VERSION_NUM	(0x1d)
-#define	SR_VERSION_NUM		0x1d, 0xff, 0
-#define	RG_MAN_ID_0	(0x1e)
-#define	SR_MAN_ID_0		0x1e, 0xff, 0
-#define	RG_MAN_ID_1	(0x1f)
-#define	SR_MAN_ID_1		0x1f, 0xff, 0
-#define	RG_SHORT_ADDR_0	(0x20)
-#define	SR_SHORT_ADDR_0		0x20, 0xff, 0
-#define	RG_SHORT_ADDR_1	(0x21)
-#define	SR_SHORT_ADDR_1		0x21, 0xff, 0
-#define	RG_PAN_ID_0	(0x22)
-#define	SR_PAN_ID_0		0x22, 0xff, 0
-#define	RG_PAN_ID_1	(0x23)
-#define	SR_PAN_ID_1		0x23, 0xff, 0
-#define	RG_IEEE_ADDR_0	(0x24)
-#define	SR_IEEE_ADDR_0		0x24, 0xff, 0
-#define	RG_IEEE_ADDR_1	(0x25)
-#define	SR_IEEE_ADDR_1		0x25, 0xff, 0
-#define	RG_IEEE_ADDR_2	(0x26)
-#define	SR_IEEE_ADDR_2		0x26, 0xff, 0
-#define	RG_IEEE_ADDR_3	(0x27)
-#define	SR_IEEE_ADDR_3		0x27, 0xff, 0
-#define	RG_IEEE_ADDR_4	(0x28)
-#define	SR_IEEE_ADDR_4		0x28, 0xff, 0
-#define	RG_IEEE_ADDR_5	(0x29)
-#define	SR_IEEE_ADDR_5		0x29, 0xff, 0
-#define	RG_IEEE_ADDR_6	(0x2a)
-#define	SR_IEEE_ADDR_6		0x2a, 0xff, 0
-#define	RG_IEEE_ADDR_7	(0x2b)
-#define	SR_IEEE_ADDR_7		0x2b, 0xff, 0
-#define	RG_XAH_CTRL_0	(0x2c)
-#define	SR_SLOTTED_OPERATION	0x2c, 0x01, 0
-#define	SR_MAX_CSMA_RETRIES	0x2c, 0x0e, 1
-#define	SR_MAX_FRAME_RETRIES	0x2c, 0xf0, 4
-#define	RG_CSMA_SEED_0	(0x2d)
-#define	SR_CSMA_SEED_0		0x2d, 0xff, 0
-#define	RG_CSMA_SEED_1	(0x2e)
-#define	SR_CSMA_SEED_1		0x2e, 0x07, 0
-#define	SR_AACK_I_AM_COORD	0x2e, 0x08, 3
-#define	SR_AACK_DIS_ACK		0x2e, 0x10, 4
-#define	SR_AACK_SET_PD		0x2e, 0x20, 5
-#define	SR_AACK_FVN_MODE	0x2e, 0xc0, 6
-#define	RG_CSMA_BE	(0x2f)
-#define	SR_MIN_BE		0x2f, 0x0f, 0
-#define	SR_MAX_BE		0x2f, 0xf0, 4
-
-#define CMD_REG		0x80
-#define CMD_REG_MASK	0x3f
-#define CMD_WRITE	0x40
-#define CMD_FB		0x20
-
-#define IRQ_BAT_LOW	(1 << 7)
-#define IRQ_TRX_UR	(1 << 6)
-#define IRQ_AMI		(1 << 5)
-#define IRQ_CCA_ED	(1 << 4)
-#define IRQ_TRX_END	(1 << 3)
-#define IRQ_RX_START	(1 << 2)
-#define IRQ_PLL_UNL	(1 << 1)
-#define IRQ_PLL_LOCK	(1 << 0)
-
-#define STATE_P_ON		0x00	/* BUSY */
-#define STATE_BUSY_RX		0x01
-#define STATE_BUSY_TX		0x02
-#define STATE_FORCE_TRX_OFF	0x03
-#define STATE_FORCE_TX_ON	0x04	/* IDLE */
-/* 0x05 */				/* INVALID_PARAMETER */
-#define STATE_RX_ON		0x06
-/* 0x07 */				/* SUCCESS */
-#define STATE_TRX_OFF		0x08
-#define STATE_TX_ON		0x09
-/* 0x0a - 0x0e */			/* 0x0a - UNSUPPORTED_ATTRIBUTE */
-#define STATE_SLEEP		0x0F
-#define STATE_BUSY_RX_AACK	0x11
-#define STATE_BUSY_TX_ARET	0x12
-#define STATE_BUSY_RX_AACK_ON	0x16
-#define STATE_BUSY_TX_ARET_ON	0x19
-#define STATE_RX_ON_NOCLK	0x1C
-#define STATE_RX_AACK_ON_NOCLK	0x1D
-#define STATE_BUSY_RX_AACK_NOCLK 0x1E
-#define STATE_TRANSITION_IN_PROGRESS 0x1F
-
-static int
-__at86rf230_write(struct at86rf230_local *lp, u8 addr, u8 data)
-{
-	u8 *buf = lp->buf;
-	int status;
-	struct spi_message msg;
-	struct spi_transfer xfer = {
-		.len	= 2,
-		.tx_buf	= buf,
-	};
-
-	buf[0] = (addr & CMD_REG_MASK) | CMD_REG | CMD_WRITE;
-	buf[1] = data;
-	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
-	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfer, &msg);
-
-	status = spi_sync(lp->spi, &msg);
-	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
-	if (msg.status)
-		status = msg.status;
-
-	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
-	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
-	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
-
-	return status;
-}
-
-static int
-__at86rf230_read_subreg(struct at86rf230_local *lp,
-			u8 addr, u8 mask, int shift, u8 *data)
-{
-	u8 *buf = lp->buf;
-	int status;
-	struct spi_message msg;
-	struct spi_transfer xfer = {
-		.len	= 2,
-		.tx_buf	= buf,
-		.rx_buf	= buf,
-	};
-
-	buf[0] = (addr & CMD_REG_MASK) | CMD_REG;
-	buf[1] = 0xff;
-	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfer, &msg);
-
-	status = spi_sync(lp->spi, &msg);
-	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
-	if (msg.status)
-		status = msg.status;
-
-	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
-	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
-	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
-
-	if (status == 0)
-		*data = buf[1];
-
-	return status;
-}
-
-static int
-at86rf230_read_subreg(struct at86rf230_local *lp,
-		      u8 addr, u8 mask, int shift, u8 *data)
-{
-	int status;
-
-	mutex_lock(&lp->bmux);
-	status = __at86rf230_read_subreg(lp, addr, mask, shift, data);
-	mutex_unlock(&lp->bmux);
-
-	return status;
-}
-
-static int
-at86rf230_write_subreg(struct at86rf230_local *lp,
-		       u8 addr, u8 mask, int shift, u8 data)
-{
-	int status;
-	u8 val;
-
-	mutex_lock(&lp->bmux);
-	status = __at86rf230_read_subreg(lp, addr, 0xff, 0, &val);
-	if (status)
-		goto out;
-
-	val &= ~mask;
-	val |= (data << shift) & mask;
-
-	status = __at86rf230_write(lp, addr, val);
-out:
-	mutex_unlock(&lp->bmux);
-
-	return status;
-}
-
-static int
-at86rf230_write_fbuf(struct at86rf230_local *lp, u8 *data, u8 len)
-{
-	u8 *buf = lp->buf;
-	int status;
-	struct spi_message msg;
-	struct spi_transfer xfer_head = {
-		.len		= 2,
-		.tx_buf		= buf,
-
-	};
-	struct spi_transfer xfer_buf = {
-		.len		= len,
-		.tx_buf		= data,
-	};
-
-	mutex_lock(&lp->bmux);
-	buf[0] = CMD_WRITE | CMD_FB;
-	buf[1] = len + 2; /* 2 bytes for CRC that isn't written */
-
-	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
-	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
-
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfer_head, &msg);
-	spi_message_add_tail(&xfer_buf, &msg);
-
-	status = spi_sync(lp->spi, &msg);
-	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
-	if (msg.status)
-		status = msg.status;
-
-	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
-	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
-	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
-
-	mutex_unlock(&lp->bmux);
-	return status;
-}
-
-static int
-at86rf230_read_fbuf(struct at86rf230_local *lp, u8 *data, u8 *len, u8 *lqi)
-{
-	u8 *buf = lp->buf;
-	int status;
-	struct spi_message msg;
-	struct spi_transfer xfer_head = {
-		.len		= 2,
-		.tx_buf		= buf,
-		.rx_buf		= buf,
-	};
-	struct spi_transfer xfer_head1 = {
-		.len		= 2,
-		.tx_buf		= buf,
-		.rx_buf		= buf,
-	};
-	struct spi_transfer xfer_buf = {
-		.len		= 0,
-		.rx_buf		= data,
-	};
-
-	mutex_lock(&lp->bmux);
-
-	buf[0] = CMD_FB;
-	buf[1] = 0x00;
-
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfer_head, &msg);
-
-	status = spi_sync(lp->spi, &msg);
-	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
-
-	xfer_buf.len = *(buf + 1) + 1;
-	*len = buf[1];
-
-	buf[0] = CMD_FB;
-	buf[1] = 0x00;
-
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfer_head1, &msg);
-	spi_message_add_tail(&xfer_buf, &msg);
-
-	status = spi_sync(lp->spi, &msg);
-
-	if (msg.status)
-		status = msg.status;
-
-	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
-	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
-	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
-
-	if (status) {
-		if (lqi && (*len > lp->buf[1]))
-			*lqi = data[lp->buf[1]];
-	}
-	mutex_unlock(&lp->bmux);
-
-	return status;
-}
-
-static int
-at86rf230_ed(struct ieee802154_dev *dev, u8 *level)
-{
-	might_sleep();
-	BUG_ON(!level);
-	*level = 0xbe;
-	return 0;
-}
-
-static int
-at86rf230_state(struct ieee802154_dev *dev, int state)
-{
-	struct at86rf230_local *lp = dev->priv;
-	int rc;
-	u8 val;
-	u8 desired_status;
-
-	might_sleep();
-
-	if (state == STATE_FORCE_TX_ON)
-		desired_status = STATE_TX_ON;
-	else if (state == STATE_FORCE_TRX_OFF)
-		desired_status = STATE_TRX_OFF;
-	else
-		desired_status = state;
-
-	do {
-		rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &val);
-		if (rc)
-			goto err;
-	} while (val == STATE_TRANSITION_IN_PROGRESS);
-
-	if (val == desired_status)
-		return 0;
-
-	/* state is equal to phy states */
-	rc = at86rf230_write_subreg(lp, SR_TRX_CMD, state);
-	if (rc)
-		goto err;
-
-	do {
-		rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &val);
-		if (rc)
-			goto err;
-	} while (val == STATE_TRANSITION_IN_PROGRESS);
-
-
-	if (val == desired_status)
-		return 0;
-
-	pr_err("unexpected state change: %d, asked for %d\n", val, state);
-	return -EBUSY;
-
-err:
-	pr_err("error: %d\n", rc);
-	return rc;
-}
-
-static int
-at86rf230_start(struct ieee802154_dev *dev)
-{
-	struct at86rf230_local *lp = dev->priv;
-	u8 rc;
-
-	rc = at86rf230_write_subreg(lp, SR_RX_SAFE_MODE, 1);
-	if (rc)
-		return rc;
-
-	return at86rf230_state(dev, STATE_RX_ON);
-}
-
-static void
-at86rf230_stop(struct ieee802154_dev *dev)
-{
-	at86rf230_state(dev, STATE_FORCE_TRX_OFF);
-}
-
-static int
-at86rf230_channel(struct ieee802154_dev *dev, int page, int channel)
-{
-	struct at86rf230_local *lp = dev->priv;
-	int rc;
-
-	might_sleep();
-
-	if (page != 0 || channel < 11 || channel > 26) {
-		WARN_ON(1);
-		return -EINVAL;
-	}
-
-	rc = at86rf230_write_subreg(lp, SR_CHANNEL, channel);
-	msleep(1); /* Wait for PLL */
-	dev->phy->current_channel = channel;
-
-	return 0;
-}
-
-static int
-at86rf230_xmit(struct ieee802154_dev *dev, struct sk_buff *skb)
-{
-	struct at86rf230_local *lp = dev->priv;
-	int rc;
-	unsigned long flags;
-
-	spin_lock(&lp->lock);
-	if  (lp->irq_disabled) {
-		spin_unlock(&lp->lock);
-		return -EBUSY;
-	}
-	spin_unlock(&lp->lock);
-
-	might_sleep();
-
-	rc = at86rf230_state(dev, STATE_FORCE_TX_ON);
-	if (rc)
-		goto err;
-
-	spin_lock_irqsave(&lp->lock, flags);
-	lp->is_tx = 1;
-	INIT_COMPLETION(lp->tx_complete);
-	spin_unlock_irqrestore(&lp->lock, flags);
-
-	rc = at86rf230_write_fbuf(lp, skb->data, skb->len);
-	if (rc)
-		goto err_rx;
-
-	rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_BUSY_TX);
-	if (rc)
-		goto err_rx;
-
-	rc = wait_for_completion_interruptible(&lp->tx_complete);
-	if (rc < 0)
-		goto err_rx;
-
-	rc = at86rf230_start(dev);
-
-	return rc;
-
-err_rx:
-	at86rf230_start(dev);
-err:
-	pr_err("error: %d\n", rc);
-
-	spin_lock_irqsave(&lp->lock, flags);
-	lp->is_tx = 0;
-	spin_unlock_irqrestore(&lp->lock, flags);
-
-	return rc;
-}
-
-static int at86rf230_rx(struct at86rf230_local *lp)
-{
-	u8 len = 128, lqi = 0;
-	struct sk_buff *skb;
-
-	skb = alloc_skb(len, GFP_KERNEL);
-
-	if (!skb)
-		return -ENOMEM;
-
-	if (at86rf230_read_fbuf(lp, skb_put(skb, len), &len, &lqi))
-		goto err;
-
-	if (len < 2)
-		goto err;
-
-	skb_trim(skb, len - 2); /* We do not put CRC into the frame */
-
-	ieee802154_rx_irqsafe(lp->dev, skb, lqi);
-
-	dev_dbg(&lp->spi->dev, "READ_FBUF: %d %x\n", len, lqi);
-
-	return 0;
-err:
-	pr_debug("received frame is too small\n");
-
-	kfree_skb(skb);
-	return -EINVAL;
-}
-
-static struct ieee802154_ops at86rf230_ops = {
-	.owner = THIS_MODULE,
-	.xmit = at86rf230_xmit,
-	.ed = at86rf230_ed,
-	.set_channel = at86rf230_channel,
-	.start = at86rf230_start,
-	.stop = at86rf230_stop,
-};
-
-static void at86rf230_irqwork(struct work_struct *work)
-{
-	struct at86rf230_local *lp =
-		container_of(work, struct at86rf230_local, irqwork);
-	u8 status = 0, val;
-	int rc;
-	unsigned long flags;
-
-	rc = at86rf230_read_subreg(lp, RG_IRQ_STATUS, 0xff, 0, &val);
-	status |= val;
-
-	status &= ~IRQ_PLL_LOCK; /* ignore */
-	status &= ~IRQ_RX_START; /* ignore */
-	status &= ~IRQ_AMI; /* ignore */
-	status &= ~IRQ_TRX_UR; /* FIXME: possibly handle ???*/
-
-	if (status & IRQ_TRX_END) {
-		spin_lock_irqsave(&lp->lock, flags);
-		status &= ~IRQ_TRX_END;
-		if (lp->is_tx) {
-			lp->is_tx = 0;
-			spin_unlock_irqrestore(&lp->lock, flags);
-			complete(&lp->tx_complete);
-		} else {
-			spin_unlock_irqrestore(&lp->lock, flags);
-			at86rf230_rx(lp);
-		}
-	}
-
-	spin_lock_irqsave(&lp->lock, flags);
-	lp->irq_disabled = 0;
-	spin_unlock_irqrestore(&lp->lock, flags);
-
-	enable_irq(lp->spi->irq);
-}
-
-static irqreturn_t at86rf230_isr(int irq, void *data)
-{
-	struct at86rf230_local *lp = data;
-
-	disable_irq_nosync(irq);
-
-	spin_lock(&lp->lock);
-	lp->irq_disabled = 1;
-	spin_unlock(&lp->lock);
-
-	schedule_work(&lp->irqwork);
-
-	return IRQ_HANDLED;
-}
-
-
-static int at86rf230_hw_init(struct at86rf230_local *lp)
-{
-	u8 status;
-	int rc;
-
-	rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &status);
-	if (rc)
-		return rc;
-
-	dev_info(&lp->spi->dev, "Status: %02x\n", status);
-	if (status == STATE_P_ON) {
-		rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_TRX_OFF);
-		if (rc)
-			return rc;
-		msleep(1);
-		rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &status);
-		if (rc)
-			return rc;
-		dev_info(&lp->spi->dev, "Status: %02x\n", status);
-	}
-
-	rc = at86rf230_write_subreg(lp, SR_IRQ_MASK, 0xff); /* IRQ_TRX_UR |
-							     * IRQ_CCA_ED |
-							     * IRQ_TRX_END |
-							     * IRQ_PLL_UNL |
-							     * IRQ_PLL_LOCK
-							     */
-	if (rc)
-		return rc;
-
-	/* CLKM changes are applied immediately */
-	rc = at86rf230_write_subreg(lp, SR_CLKM_SHA_SEL, 0x00);
-	if (rc)
-		return rc;
-
-	/* Turn CLKM Off */
-	rc = at86rf230_write_subreg(lp, SR_CLKM_CTRL, 0x00);
-	if (rc)
-		return rc;
-	/* Wait the next SLEEP cycle */
-	msleep(100);
-
-	rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_TX_ON);
-	if (rc)
-		return rc;
-	msleep(1);
-
-	rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &status);
-	if (rc)
-		return rc;
-	dev_info(&lp->spi->dev, "Status: %02x\n", status);
-
-	rc = at86rf230_read_subreg(lp, SR_DVDD_OK, &status);
-	if (rc)
-		return rc;
-	if (!status) {
-		dev_err(&lp->spi->dev, "DVDD error\n");
-		return -EINVAL;
-	}
-
-	rc = at86rf230_read_subreg(lp, SR_AVDD_OK, &status);
-	if (rc)
-		return rc;
-	if (!status) {
-		dev_err(&lp->spi->dev, "AVDD error\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int at86rf230_suspend(struct spi_device *spi, pm_message_t message)
-{
-	return 0;
-}
-
-static int at86rf230_resume(struct spi_device *spi)
-{
-	return 0;
-}
-
-static int at86rf230_fill_data(struct spi_device *spi)
-{
-	struct at86rf230_local *lp = spi_get_drvdata(spi);
-	struct at86rf230_platform_data *pdata = spi->dev.platform_data;
-
-	if (!pdata) {
-		dev_err(&spi->dev, "no platform_data\n");
-		return -EINVAL;
-	}
-
-	lp->rstn = pdata->rstn;
-	lp->slp_tr = pdata->slp_tr;
-	lp->dig2 = pdata->dig2;
-
-	return 0;
-}
-
-static int __devinit at86rf230_probe(struct spi_device *spi)
-{
-	struct ieee802154_dev *dev;
-	struct at86rf230_local *lp;
-	u8 man_id_0, man_id_1;
-	int rc;
-	const char *chip;
-	int supported = 0;
-
-	if (!spi->irq) {
-		dev_err(&spi->dev, "no IRQ specified\n");
-		return -EINVAL;
-	}
-
-	dev = ieee802154_alloc_device(sizeof(*lp), &at86rf230_ops);
-	if (!dev)
-		return -ENOMEM;
-
-	lp = dev->priv;
-	lp->dev = dev;
-
-	lp->spi = spi;
-
-	dev->priv = lp;
-	dev->parent = &spi->dev;
-	dev->extra_tx_headroom = 0;
-	/* We do support only 2.4 Ghz */
-	dev->phy->channels_supported[0] = 0x7FFF800;
-	dev->flags = IEEE802154_HW_OMIT_CKSUM;
-
-	mutex_init(&lp->bmux);
-	INIT_WORK(&lp->irqwork, at86rf230_irqwork);
-	spin_lock_init(&lp->lock);
-	init_completion(&lp->tx_complete);
-
-	spi_set_drvdata(spi, lp);
-
-	rc = at86rf230_fill_data(spi);
-	if (rc)
-		goto err_fill;
-
-	rc = gpio_request(lp->rstn, "rstn");
-	if (rc)
-		goto err_rstn;
-
-	if (gpio_is_valid(lp->slp_tr)) {
-		rc = gpio_request(lp->slp_tr, "slp_tr");
-		if (rc)
-			goto err_slp_tr;
-	}
-
-	rc = gpio_direction_output(lp->rstn, 1);
-	if (rc)
-		goto err_gpio_dir;
-
-	if (gpio_is_valid(lp->slp_tr)) {
-		rc = gpio_direction_output(lp->slp_tr, 0);
-		if (rc)
-			goto err_gpio_dir;
-	}
-
-	/* Reset */
-	msleep(1);
-	gpio_set_value(lp->rstn, 0);
-	msleep(1);
-	gpio_set_value(lp->rstn, 1);
-	msleep(1);
-
-	rc = at86rf230_read_subreg(lp, SR_MAN_ID_0, &man_id_0);
-	if (rc)
-		goto err_gpio_dir;
-	rc = at86rf230_read_subreg(lp, SR_MAN_ID_1, &man_id_1);
-	if (rc)
-		goto err_gpio_dir;
-
-	if (man_id_1 != 0x00 || man_id_0 != 0x1f) {
-		dev_err(&spi->dev, "Non-Atmel dev found (MAN_ID %02x %02x)\n",
-			man_id_1, man_id_0);
-		rc = -EINVAL;
-		goto err_gpio_dir;
-	}
-
-	rc = at86rf230_read_subreg(lp, SR_PART_NUM, &lp->part);
-	if (rc)
-		goto err_gpio_dir;
-
-	rc = at86rf230_read_subreg(lp, SR_VERSION_NUM, &lp->vers);
-	if (rc)
-		goto err_gpio_dir;
-
-	switch (lp->part) {
-	case 2:
-		chip = "at86rf230";
-		/* supported = 1;  FIXME: should be easy to support; */
-		break;
-	case 3:
-		chip = "at86rf231";
-		supported = 1;
-		break;
-	default:
-		chip = "UNKNOWN";
-		break;
-	}
-
-	dev_info(&spi->dev, "Detected %s chip version %d\n", chip, lp->vers);
-	if (!supported) {
-		rc = -ENOTSUPP;
-		goto err_gpio_dir;
-	}
-
-	rc = at86rf230_hw_init(lp);
-	if (rc)
-		goto err_gpio_dir;
-
-	rc = request_irq(spi->irq, at86rf230_isr, IRQF_SHARED,
-			 dev_name(&spi->dev), lp);
-	if (rc)
-		goto err_gpio_dir;
-
-	rc = ieee802154_register_device(lp->dev);
-	if (rc)
-		goto err_irq;
-
-	return rc;
-
-	ieee802154_unregister_device(lp->dev);
-err_irq:
-	free_irq(spi->irq, lp);
-	flush_work(&lp->irqwork);
-err_gpio_dir:
-	if (gpio_is_valid(lp->slp_tr))
-		gpio_free(lp->slp_tr);
-err_slp_tr:
-	gpio_free(lp->rstn);
-err_rstn:
-err_fill:
-	spi_set_drvdata(spi, NULL);
-	mutex_destroy(&lp->bmux);
-	ieee802154_free_device(lp->dev);
-	return rc;
-}
-
-static int __devexit at86rf230_remove(struct spi_device *spi)
-{
-	struct at86rf230_local *lp = spi_get_drvdata(spi);
-
-	ieee802154_unregister_device(lp->dev);
-
-	free_irq(spi->irq, lp);
-	flush_work(&lp->irqwork);
-
-	if (gpio_is_valid(lp->slp_tr))
-		gpio_free(lp->slp_tr);
-	gpio_free(lp->rstn);
-
-	spi_set_drvdata(spi, NULL);
-	mutex_destroy(&lp->bmux);
-	ieee802154_free_device(lp->dev);
-
-	dev_dbg(&spi->dev, "unregistered at86rf230\n");
-	return 0;
-}
-
-static struct spi_driver at86rf230_driver = {
-	.driver = {
-		.name	= "at86rf230",
-		.owner	= THIS_MODULE,
-	},
-	.probe      = at86rf230_probe,
-	.remove     = __devexit_p(at86rf230_remove),
-	.suspend    = at86rf230_suspend,
-	.resume     = at86rf230_resume,
-};
-
-module_spi_driver(at86rf230_driver);
-
-MODULE_DESCRIPTION("AT86RF230 Transceiver Driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/ieee802154/fakehard.c b/drivers/ieee802154/fakehard.c
deleted file mode 100644
index 73d4531..0000000
--- a/drivers/ieee802154/fakehard.c
+++ /dev/null
@@ -1,449 +0,0 @@
-/*
- * Sample driver for HardMAC IEEE 802.15.4 devices
- *
- * Copyright (C) 2009 Siemens AG
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Written by:
- * Dmitry Eremin-Solenikov <dmitry.baryshkov@siemens.com>
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/netdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-
-#include <net/af_ieee802154.h>
-#include <net/ieee802154_netdev.h>
-#include <net/ieee802154.h>
-#include <net/nl802154.h>
-#include <net/wpan-phy.h>
-
-struct fakehard_priv {
-	struct wpan_phy *phy;
-};
-
-static struct wpan_phy *fake_to_phy(const struct net_device *dev)
-{
-	struct fakehard_priv *priv = netdev_priv(dev);
-	return priv->phy;
-}
-
-/**
- * fake_get_phy - Return a phy corresponding to this device.
- * @dev: The network device for which to return the wan-phy object
- *
- * This function returns a wpan-phy object corresponding to the passed
- * network device. Reference counter for wpan-phy object is incremented,
- * so when the wpan-phy isn't necessary, you should drop the reference
- * via @wpan_phy_put() call.
- */
-static struct wpan_phy *fake_get_phy(const struct net_device *dev)
-{
-	struct wpan_phy *phy = fake_to_phy(dev);
-	return to_phy(get_device(&phy->dev));
-}
-
-/**
- * fake_get_pan_id - Retrieve the PAN ID of the device.
- * @dev: The network device to retrieve the PAN of.
- *
- * Return the ID of the PAN from the PIB.
- */
-static u16 fake_get_pan_id(const struct net_device *dev)
-{
-	BUG_ON(dev->type != ARPHRD_IEEE802154);
-
-	return 0xeba1;
-}
-
-/**
- * fake_get_short_addr - Retrieve the short address of the device.
- * @dev: The network device to retrieve the short address of.
- *
- * Returns the IEEE 802.15.4 short-form address cached for this
- * device. If the device has not yet had a short address assigned
- * then this should return 0xFFFF to indicate a lack of association.
- */
-static u16 fake_get_short_addr(const struct net_device *dev)
-{
-	BUG_ON(dev->type != ARPHRD_IEEE802154);
-
-	return 0x1;
-}
-
-/**
- * fake_get_dsn - Retrieve the DSN of the device.
- * @dev: The network device to retrieve the DSN for.
- *
- * Returns the IEEE 802.15.4 DSN for the network device.
- * The DSN is the sequence number which will be added to each
- * packet or MAC command frame by the MAC during transmission.
- *
- * DSN means 'Data Sequence Number'.
- *
- * Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
- *       document.
- */
-static u8 fake_get_dsn(const struct net_device *dev)
-{
-	BUG_ON(dev->type != ARPHRD_IEEE802154);
-
-	return 0x00; /* DSN are implemented in HW, so return just 0 */
-}
-
-/**
- * fake_get_bsn - Retrieve the BSN of the device.
- * @dev: The network device to retrieve the BSN for.
- *
- * Returns the IEEE 802.15.4 BSN for the network device.
- * The BSN is the sequence number which will be added to each
- * beacon frame sent by the MAC.
- *
- * BSN means 'Beacon Sequence Number'.
- *
- * Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
- *       document.
- */
-static u8 fake_get_bsn(const struct net_device *dev)
-{
-	BUG_ON(dev->type != ARPHRD_IEEE802154);
-
-	return 0x00; /* BSN are implemented in HW, so return just 0 */
-}
-
-/**
- * fake_assoc_req - Make an association request to the HW.
- * @dev: The network device which we are associating to a network.
- * @addr: The coordinator with which we wish to associate.
- * @channel: The channel on which to associate.
- * @cap: The capability information field to use in the association.
- *
- * Start an association with a coordinator. The coordinator's address
- * and PAN ID can be found in @addr.
- *
- * Note: This is in section 7.3.1 and 7.5.3.1 of the IEEE
- *       802.15.4-2006 document.
- */
-static int fake_assoc_req(struct net_device *dev,
-		struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap)
-{
-	struct wpan_phy *phy = fake_to_phy(dev);
-
-	mutex_lock(&phy->pib_lock);
-	phy->current_channel = channel;
-	phy->current_page = page;
-	mutex_unlock(&phy->pib_lock);
-
-	/* We simply emulate it here */
-	return ieee802154_nl_assoc_confirm(dev, fake_get_short_addr(dev),
-			IEEE802154_SUCCESS);
-}
-
-/**
- * fake_assoc_resp - Send an association response to a device.
- * @dev: The network device on which to send the response.
- * @addr: The address of the device to respond to.
- * @short_addr: The assigned short address for the device (if any).
- * @status: The result of the association request.
- *
- * Queue the association response of the coordinator to another
- * device's attempt to associate with the network which we
- * coordinate. This is then added to the indirect-send queue to be
- * transmitted to the end device when it polls for data.
- *
- * Note: This is in section 7.3.2 and 7.5.3.1 of the IEEE
- *       802.15.4-2006 document.
- */
-static int fake_assoc_resp(struct net_device *dev,
-		struct ieee802154_addr *addr, u16 short_addr, u8 status)
-{
-	return 0;
-}
-
-/**
- * fake_disassoc_req - Disassociate a device from a network.
- * @dev: The network device on which we're disassociating a device.
- * @addr: The device to disassociate from the network.
- * @reason: The reason to give to the device for being disassociated.
- *
- * This sends a disassociation notification to the device being
- * disassociated from the network.
- *
- * Note: This is in section 7.5.3.2 of the IEEE 802.15.4-2006
- *       document, with the reason described in 7.3.3.2.
- */
-static int fake_disassoc_req(struct net_device *dev,
-		struct ieee802154_addr *addr, u8 reason)
-{
-	return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
-}
-
-/**
- * fake_start_req - Start an IEEE 802.15.4 PAN.
- * @dev: The network device on which to start the PAN.
- * @addr: The coordinator address to use when starting the PAN.
- * @channel: The channel on which to start the PAN.
- * @bcn_ord: Beacon order.
- * @sf_ord: Superframe order.
- * @pan_coord: Whether or not we are the PAN coordinator or just
- *             requesting a realignment perhaps?
- * @blx: Battery Life Extension feature bitfield.
- * @coord_realign: Something to realign something else.
- *
- * If pan_coord is non-zero then this starts a network with the
- * provided parameters, otherwise it attempts a coordinator
- * realignment of the stated network instead.
- *
- * Note: This is in section 7.5.2.3 of the IEEE 802.15.4-2006
- * document, with 7.3.8 describing coordinator realignment.
- */
-static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
-				u8 channel, u8 page,
-				u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
-				u8 coord_realign)
-{
-	struct wpan_phy *phy = fake_to_phy(dev);
-
-	mutex_lock(&phy->pib_lock);
-	phy->current_channel = channel;
-	phy->current_page = page;
-	mutex_unlock(&phy->pib_lock);
-
-	/* We don't emulate beacons here at all, so START should fail */
-	ieee802154_nl_start_confirm(dev, IEEE802154_INVALID_PARAMETER);
-	return 0;
-}
-
-/**
- * fake_scan_req - Start a channel scan.
- * @dev: The network device on which to perform a channel scan.
- * @type: The type of scan to perform.
- * @channels: The channel bitmask to scan.
- * @duration: How long to spend on each channel.
- *
- * This starts either a passive (energy) scan or an active (PAN) scan
- * on the channels indicated in the @channels bitmask. The duration of
- * the scan is measured in terms of superframe duration. Specifically,
- * the scan will spend aBaseSuperFrameDuration * ((2^n) + 1) on each
- * channel.
- *
- * Note: This is in section 7.5.2.1 of the IEEE 802.15.4-2006 document.
- */
-static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
-		u8 page, u8 duration)
-{
-	u8 edl[27] = {};
-	return ieee802154_nl_scan_confirm(dev, IEEE802154_SUCCESS, type,
-			channels, page,
-			type == IEEE802154_MAC_SCAN_ED ? edl : NULL);
-}
-
-static struct ieee802154_mlme_ops fake_mlme = {
-	.assoc_req = fake_assoc_req,
-	.assoc_resp = fake_assoc_resp,
-	.disassoc_req = fake_disassoc_req,
-	.start_req = fake_start_req,
-	.scan_req = fake_scan_req,
-
-	.get_phy = fake_get_phy,
-
-	.get_pan_id = fake_get_pan_id,
-	.get_short_addr = fake_get_short_addr,
-	.get_dsn = fake_get_dsn,
-	.get_bsn = fake_get_bsn,
-};
-
-static int ieee802154_fake_open(struct net_device *dev)
-{
-	netif_start_queue(dev);
-	return 0;
-}
-
-static int ieee802154_fake_close(struct net_device *dev)
-{
-	netif_stop_queue(dev);
-	return 0;
-}
-
-static netdev_tx_t ieee802154_fake_xmit(struct sk_buff *skb,
-					      struct net_device *dev)
-{
-	dev->stats.tx_packets++;
-	dev->stats.tx_bytes += skb->len;
-
-	/* FIXME: do hardware work here ... */
-
-	dev_kfree_skb(skb);
-	return NETDEV_TX_OK;
-}
-
-
-static int ieee802154_fake_ioctl(struct net_device *dev, struct ifreq *ifr,
-		int cmd)
-{
-	struct sockaddr_ieee802154 *sa =
-		(struct sockaddr_ieee802154 *)&ifr->ifr_addr;
-	u16 pan_id, short_addr;
-
-	switch (cmd) {
-	case SIOCGIFADDR:
-		/* FIXME: fixed here, get from device IRL */
-		pan_id = fake_get_pan_id(dev);
-		short_addr = fake_get_short_addr(dev);
-		if (pan_id == IEEE802154_PANID_BROADCAST ||
-		    short_addr == IEEE802154_ADDR_BROADCAST)
-			return -EADDRNOTAVAIL;
-
-		sa->family = AF_IEEE802154;
-		sa->addr.addr_type = IEEE802154_ADDR_SHORT;
-		sa->addr.pan_id = pan_id;
-		sa->addr.short_addr = short_addr;
-		return 0;
-	}
-	return -ENOIOCTLCMD;
-}
-
-static int ieee802154_fake_mac_addr(struct net_device *dev, void *p)
-{
-	return -EBUSY; /* HW address is built into the device */
-}
-
-static const struct net_device_ops fake_ops = {
-	.ndo_open		= ieee802154_fake_open,
-	.ndo_stop		= ieee802154_fake_close,
-	.ndo_start_xmit		= ieee802154_fake_xmit,
-	.ndo_do_ioctl		= ieee802154_fake_ioctl,
-	.ndo_set_mac_address	= ieee802154_fake_mac_addr,
-};
-
-static void ieee802154_fake_destruct(struct net_device *dev)
-{
-	struct wpan_phy *phy = fake_to_phy(dev);
-
-	wpan_phy_unregister(phy);
-	free_netdev(dev);
-	wpan_phy_free(phy);
-}
-
-static void ieee802154_fake_setup(struct net_device *dev)
-{
-	dev->addr_len		= IEEE802154_ADDR_LEN;
-	memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
-	dev->features		= NETIF_F_HW_CSUM;
-	dev->needed_tailroom	= 2; /* FCS */
-	dev->mtu		= 127;
-	dev->tx_queue_len	= 10;
-	dev->type		= ARPHRD_IEEE802154;
-	dev->flags		= IFF_NOARP | IFF_BROADCAST;
-	dev->watchdog_timeo	= 0;
-	dev->destructor		= ieee802154_fake_destruct;
-}
-
-
-static int __devinit ieee802154fake_probe(struct platform_device *pdev)
-{
-	struct net_device *dev;
-	struct fakehard_priv *priv;
-	struct wpan_phy *phy = wpan_phy_alloc(0);
-	int err;
-
-	if (!phy)
-		return -ENOMEM;
-
-	dev = alloc_netdev(sizeof(struct fakehard_priv), "hardwpan%d", ieee802154_fake_setup);
-	if (!dev) {
-		wpan_phy_free(phy);
-		return -ENOMEM;
-	}
-
-	memcpy(dev->dev_addr, "\xba\xbe\xca\xfe\xde\xad\xbe\xef",
-			dev->addr_len);
-	memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
-
-	/*
-	 * For now we'd like to emulate 2.4 GHz-only device,
-	 * both O-QPSK and CSS
-	 */
-	/* 2.4 GHz O-QPSK 802.15.4-2003 */
-	phy->channels_supported[0] |= 0x7FFF800;
-	/* 2.4 GHz CSS 802.15.4a-2007 */
-	phy->channels_supported[3] |= 0x3fff;
-
-	phy->transmit_power = 0xbf;
-
-	dev->netdev_ops = &fake_ops;
-	dev->ml_priv = &fake_mlme;
-
-	priv = netdev_priv(dev);
-	priv->phy = phy;
-
-	wpan_phy_set_dev(phy, &pdev->dev);
-	SET_NETDEV_DEV(dev, &phy->dev);
-
-	platform_set_drvdata(pdev, dev);
-
-	err = wpan_phy_register(phy);
-	if (err)
-		goto out;
-
-	err = register_netdev(dev);
-	if (err < 0)
-		goto out;
-
-	dev_info(&pdev->dev, "Added ieee802154 HardMAC hardware\n");
-	return 0;
-
-out:
-	unregister_netdev(dev);
-	return err;
-}
-
-static int __devexit ieee802154fake_remove(struct platform_device *pdev)
-{
-	struct net_device *dev = platform_get_drvdata(pdev);
-	unregister_netdev(dev);
-	return 0;
-}
-
-static struct platform_device *ieee802154fake_dev;
-
-static struct platform_driver ieee802154fake_driver = {
-	.probe = ieee802154fake_probe,
-	.remove = __devexit_p(ieee802154fake_remove),
-	.driver = {
-			.name = "ieee802154hardmac",
-			.owner = THIS_MODULE,
-	},
-};
-
-static __init int fake_init(void)
-{
-	ieee802154fake_dev = platform_device_register_simple(
-			"ieee802154hardmac", -1, NULL, 0);
-	return platform_driver_register(&ieee802154fake_driver);
-}
-
-static __exit void fake_exit(void)
-{
-	platform_driver_unregister(&ieee802154fake_driver);
-	platform_device_unregister(ieee802154fake_dev);
-}
-
-module_init(fake_init);
-module_exit(fake_exit);
-MODULE_LICENSE("GPL");
-
diff --git a/drivers/ieee802154/fakelb.c b/drivers/ieee802154/fakelb.c
deleted file mode 100644
index e7456fc..0000000
--- a/drivers/ieee802154/fakelb.c
+++ /dev/null
@@ -1,294 +0,0 @@
-/*
- * Loopback IEEE 802.15.4 interface
- *
- * Copyright 2007-2012 Siemens AG
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Written by:
- * Sergey Lapin <slapin@ossfans.org>
- * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
- * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
- */
-
-#include <linux/module.h>
-#include <linux/timer.h>
-#include <linux/platform_device.h>
-#include <linux/netdevice.h>
-#include <linux/spinlock.h>
-#include <net/mac802154.h>
-#include <net/wpan-phy.h>
-
-static int numlbs = 1;
-
-struct fakelb_dev_priv {
-	struct ieee802154_dev *dev;
-
-	struct list_head list;
-	struct fakelb_priv *fake;
-
-	spinlock_t lock;
-	bool working;
-};
-
-struct fakelb_priv {
-	struct list_head list;
-	rwlock_t lock;
-};
-
-static int
-fakelb_hw_ed(struct ieee802154_dev *dev, u8 *level)
-{
-	might_sleep();
-	BUG_ON(!level);
-	*level = 0xbe;
-
-	return 0;
-}
-
-static int
-fakelb_hw_channel(struct ieee802154_dev *dev, int page, int channel)
-{
-	pr_debug("set channel to %d\n", channel);
-
-	might_sleep();
-	dev->phy->current_page = page;
-	dev->phy->current_channel = channel;
-
-	return 0;
-}
-
-static void
-fakelb_hw_deliver(struct fakelb_dev_priv *priv, struct sk_buff *skb)
-{
-	struct sk_buff *newskb;
-
-	spin_lock(&priv->lock);
-	if (priv->working) {
-		newskb = pskb_copy(skb, GFP_ATOMIC);
-		ieee802154_rx_irqsafe(priv->dev, newskb, 0xcc);
-	}
-	spin_unlock(&priv->lock);
-}
-
-static int
-fakelb_hw_xmit(struct ieee802154_dev *dev, struct sk_buff *skb)
-{
-	struct fakelb_dev_priv *priv = dev->priv;
-	struct fakelb_priv *fake = priv->fake;
-
-	might_sleep();
-
-	read_lock_bh(&fake->lock);
-	if (priv->list.next == priv->list.prev) {
-		/* we are the only one device */
-		fakelb_hw_deliver(priv, skb);
-	} else {
-		struct fakelb_dev_priv *dp;
-		list_for_each_entry(dp, &priv->fake->list, list) {
-			if (dp != priv &&
-			    (dp->dev->phy->current_channel ==
-			     priv->dev->phy->current_channel))
-				fakelb_hw_deliver(dp, skb);
-		}
-	}
-	read_unlock_bh(&fake->lock);
-
-	return 0;
-}
-
-static int
-fakelb_hw_start(struct ieee802154_dev *dev) {
-	struct fakelb_dev_priv *priv = dev->priv;
-	int ret = 0;
-
-	spin_lock(&priv->lock);
-	if (priv->working)
-		ret = -EBUSY;
-	else
-		priv->working = 1;
-	spin_unlock(&priv->lock);
-
-	return ret;
-}
-
-static void
-fakelb_hw_stop(struct ieee802154_dev *dev) {
-	struct fakelb_dev_priv *priv = dev->priv;
-
-	spin_lock(&priv->lock);
-	priv->working = 0;
-	spin_unlock(&priv->lock);
-}
-
-static struct ieee802154_ops fakelb_ops = {
-	.owner = THIS_MODULE,
-	.xmit = fakelb_hw_xmit,
-	.ed = fakelb_hw_ed,
-	.set_channel = fakelb_hw_channel,
-	.start = fakelb_hw_start,
-	.stop = fakelb_hw_stop,
-};
-
-/* Number of dummy devices to be set up by this module. */
-module_param(numlbs, int, 0);
-MODULE_PARM_DESC(numlbs, " number of pseudo devices");
-
-static int fakelb_add_one(struct device *dev, struct fakelb_priv *fake)
-{
-	struct fakelb_dev_priv *priv;
-	int err;
-	struct ieee802154_dev *ieee;
-
-	ieee = ieee802154_alloc_device(sizeof(*priv), &fakelb_ops);
-	if (!ieee)
-		return -ENOMEM;
-
-	priv = ieee->priv;
-	priv->dev = ieee;
-
-	/* 868 MHz BPSK	802.15.4-2003 */
-	ieee->phy->channels_supported[0] |= 1;
-	/* 915 MHz BPSK	802.15.4-2003 */
-	ieee->phy->channels_supported[0] |= 0x7fe;
-	/* 2.4 GHz O-QPSK 802.15.4-2003 */
-	ieee->phy->channels_supported[0] |= 0x7FFF800;
-	/* 868 MHz ASK 802.15.4-2006 */
-	ieee->phy->channels_supported[1] |= 1;
-	/* 915 MHz ASK 802.15.4-2006 */
-	ieee->phy->channels_supported[1] |= 0x7fe;
-	/* 868 MHz O-QPSK 802.15.4-2006 */
-	ieee->phy->channels_supported[2] |= 1;
-	/* 915 MHz O-QPSK 802.15.4-2006 */
-	ieee->phy->channels_supported[2] |= 0x7fe;
-	/* 2.4 GHz CSS 802.15.4a-2007 */
-	ieee->phy->channels_supported[3] |= 0x3fff;
-	/* UWB Sub-gigahertz 802.15.4a-2007 */
-	ieee->phy->channels_supported[4] |= 1;
-	/* UWB Low band 802.15.4a-2007 */
-	ieee->phy->channels_supported[4] |= 0x1e;
-	/* UWB High band 802.15.4a-2007 */
-	ieee->phy->channels_supported[4] |= 0xffe0;
-	/* 750 MHz O-QPSK 802.15.4c-2009 */
-	ieee->phy->channels_supported[5] |= 0xf;
-	/* 750 MHz MPSK 802.15.4c-2009 */
-	ieee->phy->channels_supported[5] |= 0xf0;
-	/* 950 MHz BPSK 802.15.4d-2009 */
-	ieee->phy->channels_supported[6] |= 0x3ff;
-	/* 950 MHz GFSK 802.15.4d-2009 */
-	ieee->phy->channels_supported[6] |= 0x3ffc00;
-
-	INIT_LIST_HEAD(&priv->list);
-	priv->fake = fake;
-
-	spin_lock_init(&priv->lock);
-
-	ieee->parent = dev;
-
-	err = ieee802154_register_device(ieee);
-	if (err)
-		goto err_reg;
-
-	write_lock_bh(&fake->lock);
-	list_add_tail(&priv->list, &fake->list);
-	write_unlock_bh(&fake->lock);
-
-	return 0;
-
-err_reg:
-	ieee802154_free_device(priv->dev);
-	return err;
-}
-
-static void fakelb_del(struct fakelb_dev_priv *priv)
-{
-	write_lock_bh(&priv->fake->lock);
-	list_del(&priv->list);
-	write_unlock_bh(&priv->fake->lock);
-
-	ieee802154_unregister_device(priv->dev);
-	ieee802154_free_device(priv->dev);
-}
-
-static int __devinit fakelb_probe(struct platform_device *pdev)
-{
-	struct fakelb_priv *priv;
-	struct fakelb_dev_priv *dp;
-	int err = -ENOMEM;
-	int i;
-
-	priv = kzalloc(sizeof(struct fakelb_priv), GFP_KERNEL);
-	if (!priv)
-		goto err_alloc;
-
-	INIT_LIST_HEAD(&priv->list);
-	rwlock_init(&priv->lock);
-
-	for (i = 0; i < numlbs; i++) {
-		err = fakelb_add_one(&pdev->dev, priv);
-		if (err < 0)
-			goto err_slave;
-	}
-
-	platform_set_drvdata(pdev, priv);
-	dev_info(&pdev->dev, "added ieee802154 hardware\n");
-	return 0;
-
-err_slave:
-	list_for_each_entry(dp, &priv->list, list)
-		fakelb_del(dp);
-	kfree(priv);
-err_alloc:
-	return err;
-}
-
-static int __devexit fakelb_remove(struct platform_device *pdev)
-{
-	struct fakelb_priv *priv = platform_get_drvdata(pdev);
-	struct fakelb_dev_priv *dp, *temp;
-
-	list_for_each_entry_safe(dp, temp, &priv->list, list)
-		fakelb_del(dp);
-	kfree(priv);
-
-	return 0;
-}
-
-static struct platform_device *ieee802154fake_dev;
-
-static struct platform_driver ieee802154fake_driver = {
-	.probe = fakelb_probe,
-	.remove = __devexit_p(fakelb_remove),
-	.driver = {
-			.name = "ieee802154fakelb",
-			.owner = THIS_MODULE,
-	},
-};
-
-static __init int fakelb_init_module(void)
-{
-	ieee802154fake_dev = platform_device_register_simple(
-			     "ieee802154fakelb", -1, NULL, 0);
-	return platform_driver_register(&ieee802154fake_driver);
-}
-
-static __exit void fake_remove_module(void)
-{
-	platform_driver_unregister(&ieee802154fake_driver);
-	platform_device_unregister(ieee802154fake_dev);
-}
-
-module_init(fakelb_init_module);
-module_exit(fake_remove_module);
-MODULE_LICENSE("GPL");
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 0c2bd80..707ab7b 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -107,8 +107,6 @@ config MII
 	  or internal device.  It is safe to say Y or M here even if your
 	  ethernet card lacks MII.
 
-source "drivers/ieee802154/Kconfig"
-
 config IFB
 	tristate "Intermediate Functional Block support"
 	depends on NET_CLS_ACT
@@ -290,6 +288,8 @@ source "drivers/net/wimax/Kconfig"
 
 source "drivers/net/wan/Kconfig"
 
+source "drivers/net/ieee802154/Kconfig"
+
 config XEN_NETDEV_FRONTEND
 	tristate "Xen network device frontend driver"
 	depends on XEN
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 3d375ca..b682a1d 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -53,6 +53,7 @@ obj-$(CONFIG_SUNGEM_PHY) += sungem_phy.o
 obj-$(CONFIG_WAN) += wan/
 obj-$(CONFIG_WLAN) += wireless/
 obj-$(CONFIG_WIMAX) += wimax/
+obj-$(CONFIG_IEEE802154) += ieee802154/
 
 obj-$(CONFIG_VMXNET3) += vmxnet3/
 obj-$(CONFIG_XEN_NETDEV_FRONTEND) += xen-netfront.o
diff --git a/drivers/net/ieee802154/Kconfig b/drivers/net/ieee802154/Kconfig
new file mode 100644
index 0000000..1fc4eef
--- /dev/null
+++ b/drivers/net/ieee802154/Kconfig
@@ -0,0 +1,36 @@
+menuconfig IEEE802154_DRIVERS
+	tristate "IEEE 802.15.4 drivers"
+	depends on NETDEVICES && IEEE802154
+	default y
+	---help---
+	  Say Y here to get to see options for IEEE 802.15.4 Low-Rate
+	  Wireless Personal Area Network device drivers. This option alone
+	  does not add any kernel code.
+
+	  If you say N, all options in this submenu will be skipped and
+	  disabled.
+
+config IEEE802154_FAKEHARD
+	tristate "Fake LR-WPAN driver with several interconnected devices"
+	depends on  IEEE802154_DRIVERS
+	---help---
+	  Say Y here to enable the fake driver that serves as an example
+          of HardMAC device driver.
+
+          This driver can also be built as a module. To do so say M here.
+	  The module will be called 'fakehard'.
+
+config IEEE802154_FAKELB
+	depends on IEEE802154_DRIVERS && MAC802154
+	tristate "IEEE 802.15.4 loopback driver"
+	---help---
+	  Say Y here to enable the fake driver that can emulate a net
+	  of several interconnected radio devices.
+
+	  This driver can also be built as a module. To do so say M here.
+	  The module will be called 'fakelb'.
+
+config IEEE802154_AT86RF230
+        depends on IEEE802154_DRIVERS && MAC802154
+        tristate "AT86RF230/231 transceiver driver"
+        depends on SPI
diff --git a/drivers/net/ieee802154/Makefile b/drivers/net/ieee802154/Makefile
new file mode 100644
index 0000000..4f4371d
--- /dev/null
+++ b/drivers/net/ieee802154/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_IEEE802154_FAKEHARD) += fakehard.o
+obj-$(CONFIG_IEEE802154_FAKELB) += fakelb.o
+obj-$(CONFIG_IEEE802154_AT86RF230) += at86rf230.o
diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
new file mode 100644
index 0000000..ba753d8
--- /dev/null
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -0,0 +1,958 @@
+/*
+ * AT86RF230/RF231 driver
+ *
+ * Copyright (C) 2009-2012 Siemens AG
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by:
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/workqueue.h>
+#include <linux/spinlock.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/at86rf230.h>
+#include <linux/skbuff.h>
+
+#include <net/mac802154.h>
+#include <net/wpan-phy.h>
+
+struct at86rf230_local {
+	struct spi_device *spi;
+	int rstn, slp_tr, dig2;
+
+	u8 part;
+	u8 vers;
+
+	u8 buf[2];
+	struct mutex bmux;
+
+	struct work_struct irqwork;
+	struct completion tx_complete;
+
+	struct ieee802154_dev *dev;
+
+	spinlock_t lock;
+	bool irq_disabled;
+	bool is_tx;
+};
+
+#define	RG_TRX_STATUS	(0x01)
+#define	SR_TRX_STATUS		0x01, 0x1f, 0
+#define	SR_RESERVED_01_3	0x01, 0x20, 5
+#define	SR_CCA_STATUS		0x01, 0x40, 6
+#define	SR_CCA_DONE		0x01, 0x80, 7
+#define	RG_TRX_STATE	(0x02)
+#define	SR_TRX_CMD		0x02, 0x1f, 0
+#define	SR_TRAC_STATUS		0x02, 0xe0, 5
+#define	RG_TRX_CTRL_0	(0x03)
+#define	SR_CLKM_CTRL		0x03, 0x07, 0
+#define	SR_CLKM_SHA_SEL		0x03, 0x08, 3
+#define	SR_PAD_IO_CLKM		0x03, 0x30, 4
+#define	SR_PAD_IO		0x03, 0xc0, 6
+#define	RG_TRX_CTRL_1	(0x04)
+#define	SR_IRQ_POLARITY		0x04, 0x01, 0
+#define	SR_IRQ_MASK_MODE	0x04, 0x02, 1
+#define	SR_SPI_CMD_MODE		0x04, 0x0c, 2
+#define	SR_RX_BL_CTRL		0x04, 0x10, 4
+#define	SR_TX_AUTO_CRC_ON	0x04, 0x20, 5
+#define	SR_IRQ_2_EXT_EN		0x04, 0x40, 6
+#define	SR_PA_EXT_EN		0x04, 0x80, 7
+#define	RG_PHY_TX_PWR	(0x05)
+#define	SR_TX_PWR		0x05, 0x0f, 0
+#define	SR_PA_LT		0x05, 0x30, 4
+#define	SR_PA_BUF_LT		0x05, 0xc0, 6
+#define	RG_PHY_RSSI	(0x06)
+#define	SR_RSSI			0x06, 0x1f, 0
+#define	SR_RND_VALUE		0x06, 0x60, 5
+#define	SR_RX_CRC_VALID		0x06, 0x80, 7
+#define	RG_PHY_ED_LEVEL	(0x07)
+#define	SR_ED_LEVEL		0x07, 0xff, 0
+#define	RG_PHY_CC_CCA	(0x08)
+#define	SR_CHANNEL		0x08, 0x1f, 0
+#define	SR_CCA_MODE		0x08, 0x60, 5
+#define	SR_CCA_REQUEST		0x08, 0x80, 7
+#define	RG_CCA_THRES	(0x09)
+#define	SR_CCA_ED_THRES		0x09, 0x0f, 0
+#define	SR_RESERVED_09_1	0x09, 0xf0, 4
+#define	RG_RX_CTRL	(0x0a)
+#define	SR_PDT_THRES		0x0a, 0x0f, 0
+#define	SR_RESERVED_0a_1	0x0a, 0xf0, 4
+#define	RG_SFD_VALUE	(0x0b)
+#define	SR_SFD_VALUE		0x0b, 0xff, 0
+#define	RG_TRX_CTRL_2	(0x0c)
+#define	SR_OQPSK_DATA_RATE	0x0c, 0x03, 0
+#define	SR_RESERVED_0c_2	0x0c, 0x7c, 2
+#define	SR_RX_SAFE_MODE		0x0c, 0x80, 7
+#define	RG_ANT_DIV	(0x0d)
+#define	SR_ANT_CTRL		0x0d, 0x03, 0
+#define	SR_ANT_EXT_SW_EN	0x0d, 0x04, 2
+#define	SR_ANT_DIV_EN		0x0d, 0x08, 3
+#define	SR_RESERVED_0d_2	0x0d, 0x70, 4
+#define	SR_ANT_SEL		0x0d, 0x80, 7
+#define	RG_IRQ_MASK	(0x0e)
+#define	SR_IRQ_MASK		0x0e, 0xff, 0
+#define	RG_IRQ_STATUS	(0x0f)
+#define	SR_IRQ_0_PLL_LOCK	0x0f, 0x01, 0
+#define	SR_IRQ_1_PLL_UNLOCK	0x0f, 0x02, 1
+#define	SR_IRQ_2_RX_START	0x0f, 0x04, 2
+#define	SR_IRQ_3_TRX_END	0x0f, 0x08, 3
+#define	SR_IRQ_4_CCA_ED_DONE	0x0f, 0x10, 4
+#define	SR_IRQ_5_AMI		0x0f, 0x20, 5
+#define	SR_IRQ_6_TRX_UR		0x0f, 0x40, 6
+#define	SR_IRQ_7_BAT_LOW	0x0f, 0x80, 7
+#define	RG_VREG_CTRL	(0x10)
+#define	SR_RESERVED_10_6	0x10, 0x03, 0
+#define	SR_DVDD_OK		0x10, 0x04, 2
+#define	SR_DVREG_EXT		0x10, 0x08, 3
+#define	SR_RESERVED_10_3	0x10, 0x30, 4
+#define	SR_AVDD_OK		0x10, 0x40, 6
+#define	SR_AVREG_EXT		0x10, 0x80, 7
+#define	RG_BATMON	(0x11)
+#define	SR_BATMON_VTH		0x11, 0x0f, 0
+#define	SR_BATMON_HR		0x11, 0x10, 4
+#define	SR_BATMON_OK		0x11, 0x20, 5
+#define	SR_RESERVED_11_1	0x11, 0xc0, 6
+#define	RG_XOSC_CTRL	(0x12)
+#define	SR_XTAL_TRIM		0x12, 0x0f, 0
+#define	SR_XTAL_MODE		0x12, 0xf0, 4
+#define	RG_RX_SYN	(0x15)
+#define	SR_RX_PDT_LEVEL		0x15, 0x0f, 0
+#define	SR_RESERVED_15_2	0x15, 0x70, 4
+#define	SR_RX_PDT_DIS		0x15, 0x80, 7
+#define	RG_XAH_CTRL_1	(0x17)
+#define	SR_RESERVED_17_8	0x17, 0x01, 0
+#define	SR_AACK_PROM_MODE	0x17, 0x02, 1
+#define	SR_AACK_ACK_TIME	0x17, 0x04, 2
+#define	SR_RESERVED_17_5	0x17, 0x08, 3
+#define	SR_AACK_UPLD_RES_FT	0x17, 0x10, 4
+#define	SR_AACK_FLTR_RES_FT	0x17, 0x20, 5
+#define	SR_RESERVED_17_2	0x17, 0x40, 6
+#define	SR_RESERVED_17_1	0x17, 0x80, 7
+#define	RG_FTN_CTRL	(0x18)
+#define	SR_RESERVED_18_2	0x18, 0x7f, 0
+#define	SR_FTN_START		0x18, 0x80, 7
+#define	RG_PLL_CF	(0x1a)
+#define	SR_RESERVED_1a_2	0x1a, 0x7f, 0
+#define	SR_PLL_CF_START		0x1a, 0x80, 7
+#define	RG_PLL_DCU	(0x1b)
+#define	SR_RESERVED_1b_3	0x1b, 0x3f, 0
+#define	SR_RESERVED_1b_2	0x1b, 0x40, 6
+#define	SR_PLL_DCU_START	0x1b, 0x80, 7
+#define	RG_PART_NUM	(0x1c)
+#define	SR_PART_NUM		0x1c, 0xff, 0
+#define	RG_VERSION_NUM	(0x1d)
+#define	SR_VERSION_NUM		0x1d, 0xff, 0
+#define	RG_MAN_ID_0	(0x1e)
+#define	SR_MAN_ID_0		0x1e, 0xff, 0
+#define	RG_MAN_ID_1	(0x1f)
+#define	SR_MAN_ID_1		0x1f, 0xff, 0
+#define	RG_SHORT_ADDR_0	(0x20)
+#define	SR_SHORT_ADDR_0		0x20, 0xff, 0
+#define	RG_SHORT_ADDR_1	(0x21)
+#define	SR_SHORT_ADDR_1		0x21, 0xff, 0
+#define	RG_PAN_ID_0	(0x22)
+#define	SR_PAN_ID_0		0x22, 0xff, 0
+#define	RG_PAN_ID_1	(0x23)
+#define	SR_PAN_ID_1		0x23, 0xff, 0
+#define	RG_IEEE_ADDR_0	(0x24)
+#define	SR_IEEE_ADDR_0		0x24, 0xff, 0
+#define	RG_IEEE_ADDR_1	(0x25)
+#define	SR_IEEE_ADDR_1		0x25, 0xff, 0
+#define	RG_IEEE_ADDR_2	(0x26)
+#define	SR_IEEE_ADDR_2		0x26, 0xff, 0
+#define	RG_IEEE_ADDR_3	(0x27)
+#define	SR_IEEE_ADDR_3		0x27, 0xff, 0
+#define	RG_IEEE_ADDR_4	(0x28)
+#define	SR_IEEE_ADDR_4		0x28, 0xff, 0
+#define	RG_IEEE_ADDR_5	(0x29)
+#define	SR_IEEE_ADDR_5		0x29, 0xff, 0
+#define	RG_IEEE_ADDR_6	(0x2a)
+#define	SR_IEEE_ADDR_6		0x2a, 0xff, 0
+#define	RG_IEEE_ADDR_7	(0x2b)
+#define	SR_IEEE_ADDR_7		0x2b, 0xff, 0
+#define	RG_XAH_CTRL_0	(0x2c)
+#define	SR_SLOTTED_OPERATION	0x2c, 0x01, 0
+#define	SR_MAX_CSMA_RETRIES	0x2c, 0x0e, 1
+#define	SR_MAX_FRAME_RETRIES	0x2c, 0xf0, 4
+#define	RG_CSMA_SEED_0	(0x2d)
+#define	SR_CSMA_SEED_0		0x2d, 0xff, 0
+#define	RG_CSMA_SEED_1	(0x2e)
+#define	SR_CSMA_SEED_1		0x2e, 0x07, 0
+#define	SR_AACK_I_AM_COORD	0x2e, 0x08, 3
+#define	SR_AACK_DIS_ACK		0x2e, 0x10, 4
+#define	SR_AACK_SET_PD		0x2e, 0x20, 5
+#define	SR_AACK_FVN_MODE	0x2e, 0xc0, 6
+#define	RG_CSMA_BE	(0x2f)
+#define	SR_MIN_BE		0x2f, 0x0f, 0
+#define	SR_MAX_BE		0x2f, 0xf0, 4
+
+#define CMD_REG		0x80
+#define CMD_REG_MASK	0x3f
+#define CMD_WRITE	0x40
+#define CMD_FB		0x20
+
+#define IRQ_BAT_LOW	(1 << 7)
+#define IRQ_TRX_UR	(1 << 6)
+#define IRQ_AMI		(1 << 5)
+#define IRQ_CCA_ED	(1 << 4)
+#define IRQ_TRX_END	(1 << 3)
+#define IRQ_RX_START	(1 << 2)
+#define IRQ_PLL_UNL	(1 << 1)
+#define IRQ_PLL_LOCK	(1 << 0)
+
+#define STATE_P_ON		0x00	/* BUSY */
+#define STATE_BUSY_RX		0x01
+#define STATE_BUSY_TX		0x02
+#define STATE_FORCE_TRX_OFF	0x03
+#define STATE_FORCE_TX_ON	0x04	/* IDLE */
+/* 0x05 */				/* INVALID_PARAMETER */
+#define STATE_RX_ON		0x06
+/* 0x07 */				/* SUCCESS */
+#define STATE_TRX_OFF		0x08
+#define STATE_TX_ON		0x09
+/* 0x0a - 0x0e */			/* 0x0a - UNSUPPORTED_ATTRIBUTE */
+#define STATE_SLEEP		0x0F
+#define STATE_BUSY_RX_AACK	0x11
+#define STATE_BUSY_TX_ARET	0x12
+#define STATE_BUSY_RX_AACK_ON	0x16
+#define STATE_BUSY_TX_ARET_ON	0x19
+#define STATE_RX_ON_NOCLK	0x1C
+#define STATE_RX_AACK_ON_NOCLK	0x1D
+#define STATE_BUSY_RX_AACK_NOCLK 0x1E
+#define STATE_TRANSITION_IN_PROGRESS 0x1F
+
+static int
+__at86rf230_write(struct at86rf230_local *lp, u8 addr, u8 data)
+{
+	u8 *buf = lp->buf;
+	int status;
+	struct spi_message msg;
+	struct spi_transfer xfer = {
+		.len	= 2,
+		.tx_buf	= buf,
+	};
+
+	buf[0] = (addr & CMD_REG_MASK) | CMD_REG | CMD_WRITE;
+	buf[1] = data;
+	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
+	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
+	spi_message_init(&msg);
+	spi_message_add_tail(&xfer, &msg);
+
+	status = spi_sync(lp->spi, &msg);
+	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
+	if (msg.status)
+		status = msg.status;
+
+	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
+	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
+	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
+
+	return status;
+}
+
+static int
+__at86rf230_read_subreg(struct at86rf230_local *lp,
+			u8 addr, u8 mask, int shift, u8 *data)
+{
+	u8 *buf = lp->buf;
+	int status;
+	struct spi_message msg;
+	struct spi_transfer xfer = {
+		.len	= 2,
+		.tx_buf	= buf,
+		.rx_buf	= buf,
+	};
+
+	buf[0] = (addr & CMD_REG_MASK) | CMD_REG;
+	buf[1] = 0xff;
+	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
+	spi_message_init(&msg);
+	spi_message_add_tail(&xfer, &msg);
+
+	status = spi_sync(lp->spi, &msg);
+	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
+	if (msg.status)
+		status = msg.status;
+
+	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
+	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
+	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
+
+	if (status == 0)
+		*data = buf[1];
+
+	return status;
+}
+
+static int
+at86rf230_read_subreg(struct at86rf230_local *lp,
+		      u8 addr, u8 mask, int shift, u8 *data)
+{
+	int status;
+
+	mutex_lock(&lp->bmux);
+	status = __at86rf230_read_subreg(lp, addr, mask, shift, data);
+	mutex_unlock(&lp->bmux);
+
+	return status;
+}
+
+static int
+at86rf230_write_subreg(struct at86rf230_local *lp,
+		       u8 addr, u8 mask, int shift, u8 data)
+{
+	int status;
+	u8 val;
+
+	mutex_lock(&lp->bmux);
+	status = __at86rf230_read_subreg(lp, addr, 0xff, 0, &val);
+	if (status)
+		goto out;
+
+	val &= ~mask;
+	val |= (data << shift) & mask;
+
+	status = __at86rf230_write(lp, addr, val);
+out:
+	mutex_unlock(&lp->bmux);
+
+	return status;
+}
+
+static int
+at86rf230_write_fbuf(struct at86rf230_local *lp, u8 *data, u8 len)
+{
+	u8 *buf = lp->buf;
+	int status;
+	struct spi_message msg;
+	struct spi_transfer xfer_head = {
+		.len		= 2,
+		.tx_buf		= buf,
+
+	};
+	struct spi_transfer xfer_buf = {
+		.len		= len,
+		.tx_buf		= data,
+	};
+
+	mutex_lock(&lp->bmux);
+	buf[0] = CMD_WRITE | CMD_FB;
+	buf[1] = len + 2; /* 2 bytes for CRC that isn't written */
+
+	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
+	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
+
+	spi_message_init(&msg);
+	spi_message_add_tail(&xfer_head, &msg);
+	spi_message_add_tail(&xfer_buf, &msg);
+
+	status = spi_sync(lp->spi, &msg);
+	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
+	if (msg.status)
+		status = msg.status;
+
+	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
+	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
+	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
+
+	mutex_unlock(&lp->bmux);
+	return status;
+}
+
+static int
+at86rf230_read_fbuf(struct at86rf230_local *lp, u8 *data, u8 *len, u8 *lqi)
+{
+	u8 *buf = lp->buf;
+	int status;
+	struct spi_message msg;
+	struct spi_transfer xfer_head = {
+		.len		= 2,
+		.tx_buf		= buf,
+		.rx_buf		= buf,
+	};
+	struct spi_transfer xfer_head1 = {
+		.len		= 2,
+		.tx_buf		= buf,
+		.rx_buf		= buf,
+	};
+	struct spi_transfer xfer_buf = {
+		.len		= 0,
+		.rx_buf		= data,
+	};
+
+	mutex_lock(&lp->bmux);
+
+	buf[0] = CMD_FB;
+	buf[1] = 0x00;
+
+	spi_message_init(&msg);
+	spi_message_add_tail(&xfer_head, &msg);
+
+	status = spi_sync(lp->spi, &msg);
+	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
+
+	xfer_buf.len = *(buf + 1) + 1;
+	*len = buf[1];
+
+	buf[0] = CMD_FB;
+	buf[1] = 0x00;
+
+	spi_message_init(&msg);
+	spi_message_add_tail(&xfer_head1, &msg);
+	spi_message_add_tail(&xfer_buf, &msg);
+
+	status = spi_sync(lp->spi, &msg);
+
+	if (msg.status)
+		status = msg.status;
+
+	dev_vdbg(&lp->spi->dev, "status = %d\n", status);
+	dev_vdbg(&lp->spi->dev, "buf[0] = %02x\n", buf[0]);
+	dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
+
+	if (status) {
+		if (lqi && (*len > lp->buf[1]))
+			*lqi = data[lp->buf[1]];
+	}
+	mutex_unlock(&lp->bmux);
+
+	return status;
+}
+
+static int
+at86rf230_ed(struct ieee802154_dev *dev, u8 *level)
+{
+	might_sleep();
+	BUG_ON(!level);
+	*level = 0xbe;
+	return 0;
+}
+
+static int
+at86rf230_state(struct ieee802154_dev *dev, int state)
+{
+	struct at86rf230_local *lp = dev->priv;
+	int rc;
+	u8 val;
+	u8 desired_status;
+
+	might_sleep();
+
+	if (state == STATE_FORCE_TX_ON)
+		desired_status = STATE_TX_ON;
+	else if (state == STATE_FORCE_TRX_OFF)
+		desired_status = STATE_TRX_OFF;
+	else
+		desired_status = state;
+
+	do {
+		rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &val);
+		if (rc)
+			goto err;
+	} while (val == STATE_TRANSITION_IN_PROGRESS);
+
+	if (val == desired_status)
+		return 0;
+
+	/* state is equal to phy states */
+	rc = at86rf230_write_subreg(lp, SR_TRX_CMD, state);
+	if (rc)
+		goto err;
+
+	do {
+		rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &val);
+		if (rc)
+			goto err;
+	} while (val == STATE_TRANSITION_IN_PROGRESS);
+
+
+	if (val == desired_status)
+		return 0;
+
+	pr_err("unexpected state change: %d, asked for %d\n", val, state);
+	return -EBUSY;
+
+err:
+	pr_err("error: %d\n", rc);
+	return rc;
+}
+
+static int
+at86rf230_start(struct ieee802154_dev *dev)
+{
+	struct at86rf230_local *lp = dev->priv;
+	u8 rc;
+
+	rc = at86rf230_write_subreg(lp, SR_RX_SAFE_MODE, 1);
+	if (rc)
+		return rc;
+
+	return at86rf230_state(dev, STATE_RX_ON);
+}
+
+static void
+at86rf230_stop(struct ieee802154_dev *dev)
+{
+	at86rf230_state(dev, STATE_FORCE_TRX_OFF);
+}
+
+static int
+at86rf230_channel(struct ieee802154_dev *dev, int page, int channel)
+{
+	struct at86rf230_local *lp = dev->priv;
+	int rc;
+
+	might_sleep();
+
+	if (page != 0 || channel < 11 || channel > 26) {
+		WARN_ON(1);
+		return -EINVAL;
+	}
+
+	rc = at86rf230_write_subreg(lp, SR_CHANNEL, channel);
+	msleep(1); /* Wait for PLL */
+	dev->phy->current_channel = channel;
+
+	return 0;
+}
+
+static int
+at86rf230_xmit(struct ieee802154_dev *dev, struct sk_buff *skb)
+{
+	struct at86rf230_local *lp = dev->priv;
+	int rc;
+	unsigned long flags;
+
+	spin_lock(&lp->lock);
+	if  (lp->irq_disabled) {
+		spin_unlock(&lp->lock);
+		return -EBUSY;
+	}
+	spin_unlock(&lp->lock);
+
+	might_sleep();
+
+	rc = at86rf230_state(dev, STATE_FORCE_TX_ON);
+	if (rc)
+		goto err;
+
+	spin_lock_irqsave(&lp->lock, flags);
+	lp->is_tx = 1;
+	INIT_COMPLETION(lp->tx_complete);
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	rc = at86rf230_write_fbuf(lp, skb->data, skb->len);
+	if (rc)
+		goto err_rx;
+
+	rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_BUSY_TX);
+	if (rc)
+		goto err_rx;
+
+	rc = wait_for_completion_interruptible(&lp->tx_complete);
+	if (rc < 0)
+		goto err_rx;
+
+	rc = at86rf230_start(dev);
+
+	return rc;
+
+err_rx:
+	at86rf230_start(dev);
+err:
+	pr_err("error: %d\n", rc);
+
+	spin_lock_irqsave(&lp->lock, flags);
+	lp->is_tx = 0;
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	return rc;
+}
+
+static int at86rf230_rx(struct at86rf230_local *lp)
+{
+	u8 len = 128, lqi = 0;
+	struct sk_buff *skb;
+
+	skb = alloc_skb(len, GFP_KERNEL);
+
+	if (!skb)
+		return -ENOMEM;
+
+	if (at86rf230_read_fbuf(lp, skb_put(skb, len), &len, &lqi))
+		goto err;
+
+	if (len < 2)
+		goto err;
+
+	skb_trim(skb, len - 2); /* We do not put CRC into the frame */
+
+	ieee802154_rx_irqsafe(lp->dev, skb, lqi);
+
+	dev_dbg(&lp->spi->dev, "READ_FBUF: %d %x\n", len, lqi);
+
+	return 0;
+err:
+	pr_debug("received frame is too small\n");
+
+	kfree_skb(skb);
+	return -EINVAL;
+}
+
+static struct ieee802154_ops at86rf230_ops = {
+	.owner = THIS_MODULE,
+	.xmit = at86rf230_xmit,
+	.ed = at86rf230_ed,
+	.set_channel = at86rf230_channel,
+	.start = at86rf230_start,
+	.stop = at86rf230_stop,
+};
+
+static void at86rf230_irqwork(struct work_struct *work)
+{
+	struct at86rf230_local *lp =
+		container_of(work, struct at86rf230_local, irqwork);
+	u8 status = 0, val;
+	int rc;
+	unsigned long flags;
+
+	rc = at86rf230_read_subreg(lp, RG_IRQ_STATUS, 0xff, 0, &val);
+	status |= val;
+
+	status &= ~IRQ_PLL_LOCK; /* ignore */
+	status &= ~IRQ_RX_START; /* ignore */
+	status &= ~IRQ_AMI; /* ignore */
+	status &= ~IRQ_TRX_UR; /* FIXME: possibly handle ???*/
+
+	if (status & IRQ_TRX_END) {
+		spin_lock_irqsave(&lp->lock, flags);
+		status &= ~IRQ_TRX_END;
+		if (lp->is_tx) {
+			lp->is_tx = 0;
+			spin_unlock_irqrestore(&lp->lock, flags);
+			complete(&lp->tx_complete);
+		} else {
+			spin_unlock_irqrestore(&lp->lock, flags);
+			at86rf230_rx(lp);
+		}
+	}
+
+	spin_lock_irqsave(&lp->lock, flags);
+	lp->irq_disabled = 0;
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	enable_irq(lp->spi->irq);
+}
+
+static irqreturn_t at86rf230_isr(int irq, void *data)
+{
+	struct at86rf230_local *lp = data;
+
+	disable_irq_nosync(irq);
+
+	spin_lock(&lp->lock);
+	lp->irq_disabled = 1;
+	spin_unlock(&lp->lock);
+
+	schedule_work(&lp->irqwork);
+
+	return IRQ_HANDLED;
+}
+
+
+static int at86rf230_hw_init(struct at86rf230_local *lp)
+{
+	u8 status;
+	int rc;
+
+	rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &status);
+	if (rc)
+		return rc;
+
+	dev_info(&lp->spi->dev, "Status: %02x\n", status);
+	if (status == STATE_P_ON) {
+		rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_TRX_OFF);
+		if (rc)
+			return rc;
+		msleep(1);
+		rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &status);
+		if (rc)
+			return rc;
+		dev_info(&lp->spi->dev, "Status: %02x\n", status);
+	}
+
+	rc = at86rf230_write_subreg(lp, SR_IRQ_MASK, 0xff); /* IRQ_TRX_UR |
+							     * IRQ_CCA_ED |
+							     * IRQ_TRX_END |
+							     * IRQ_PLL_UNL |
+							     * IRQ_PLL_LOCK
+							     */
+	if (rc)
+		return rc;
+
+	/* CLKM changes are applied immediately */
+	rc = at86rf230_write_subreg(lp, SR_CLKM_SHA_SEL, 0x00);
+	if (rc)
+		return rc;
+
+	/* Turn CLKM Off */
+	rc = at86rf230_write_subreg(lp, SR_CLKM_CTRL, 0x00);
+	if (rc)
+		return rc;
+	/* Wait the next SLEEP cycle */
+	msleep(100);
+
+	rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_TX_ON);
+	if (rc)
+		return rc;
+	msleep(1);
+
+	rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &status);
+	if (rc)
+		return rc;
+	dev_info(&lp->spi->dev, "Status: %02x\n", status);
+
+	rc = at86rf230_read_subreg(lp, SR_DVDD_OK, &status);
+	if (rc)
+		return rc;
+	if (!status) {
+		dev_err(&lp->spi->dev, "DVDD error\n");
+		return -EINVAL;
+	}
+
+	rc = at86rf230_read_subreg(lp, SR_AVDD_OK, &status);
+	if (rc)
+		return rc;
+	if (!status) {
+		dev_err(&lp->spi->dev, "AVDD error\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int at86rf230_suspend(struct spi_device *spi, pm_message_t message)
+{
+	return 0;
+}
+
+static int at86rf230_resume(struct spi_device *spi)
+{
+	return 0;
+}
+
+static int at86rf230_fill_data(struct spi_device *spi)
+{
+	struct at86rf230_local *lp = spi_get_drvdata(spi);
+	struct at86rf230_platform_data *pdata = spi->dev.platform_data;
+
+	if (!pdata) {
+		dev_err(&spi->dev, "no platform_data\n");
+		return -EINVAL;
+	}
+
+	lp->rstn = pdata->rstn;
+	lp->slp_tr = pdata->slp_tr;
+	lp->dig2 = pdata->dig2;
+
+	return 0;
+}
+
+static int __devinit at86rf230_probe(struct spi_device *spi)
+{
+	struct ieee802154_dev *dev;
+	struct at86rf230_local *lp;
+	u8 man_id_0, man_id_1;
+	int rc;
+	const char *chip;
+	int supported = 0;
+
+	if (!spi->irq) {
+		dev_err(&spi->dev, "no IRQ specified\n");
+		return -EINVAL;
+	}
+
+	dev = ieee802154_alloc_device(sizeof(*lp), &at86rf230_ops);
+	if (!dev)
+		return -ENOMEM;
+
+	lp = dev->priv;
+	lp->dev = dev;
+
+	lp->spi = spi;
+
+	dev->priv = lp;
+	dev->parent = &spi->dev;
+	dev->extra_tx_headroom = 0;
+	/* We do support only 2.4 Ghz */
+	dev->phy->channels_supported[0] = 0x7FFF800;
+	dev->flags = IEEE802154_HW_OMIT_CKSUM;
+
+	mutex_init(&lp->bmux);
+	INIT_WORK(&lp->irqwork, at86rf230_irqwork);
+	spin_lock_init(&lp->lock);
+	init_completion(&lp->tx_complete);
+
+	spi_set_drvdata(spi, lp);
+
+	rc = at86rf230_fill_data(spi);
+	if (rc)
+		goto err_fill;
+
+	rc = gpio_request(lp->rstn, "rstn");
+	if (rc)
+		goto err_rstn;
+
+	if (gpio_is_valid(lp->slp_tr)) {
+		rc = gpio_request(lp->slp_tr, "slp_tr");
+		if (rc)
+			goto err_slp_tr;
+	}
+
+	rc = gpio_direction_output(lp->rstn, 1);
+	if (rc)
+		goto err_gpio_dir;
+
+	if (gpio_is_valid(lp->slp_tr)) {
+		rc = gpio_direction_output(lp->slp_tr, 0);
+		if (rc)
+			goto err_gpio_dir;
+	}
+
+	/* Reset */
+	msleep(1);
+	gpio_set_value(lp->rstn, 0);
+	msleep(1);
+	gpio_set_value(lp->rstn, 1);
+	msleep(1);
+
+	rc = at86rf230_read_subreg(lp, SR_MAN_ID_0, &man_id_0);
+	if (rc)
+		goto err_gpio_dir;
+	rc = at86rf230_read_subreg(lp, SR_MAN_ID_1, &man_id_1);
+	if (rc)
+		goto err_gpio_dir;
+
+	if (man_id_1 != 0x00 || man_id_0 != 0x1f) {
+		dev_err(&spi->dev, "Non-Atmel dev found (MAN_ID %02x %02x)\n",
+			man_id_1, man_id_0);
+		rc = -EINVAL;
+		goto err_gpio_dir;
+	}
+
+	rc = at86rf230_read_subreg(lp, SR_PART_NUM, &lp->part);
+	if (rc)
+		goto err_gpio_dir;
+
+	rc = at86rf230_read_subreg(lp, SR_VERSION_NUM, &lp->vers);
+	if (rc)
+		goto err_gpio_dir;
+
+	switch (lp->part) {
+	case 2:
+		chip = "at86rf230";
+		/* supported = 1;  FIXME: should be easy to support; */
+		break;
+	case 3:
+		chip = "at86rf231";
+		supported = 1;
+		break;
+	default:
+		chip = "UNKNOWN";
+		break;
+	}
+
+	dev_info(&spi->dev, "Detected %s chip version %d\n", chip, lp->vers);
+	if (!supported) {
+		rc = -ENOTSUPP;
+		goto err_gpio_dir;
+	}
+
+	rc = at86rf230_hw_init(lp);
+	if (rc)
+		goto err_gpio_dir;
+
+	rc = request_irq(spi->irq, at86rf230_isr, IRQF_SHARED,
+			 dev_name(&spi->dev), lp);
+	if (rc)
+		goto err_gpio_dir;
+
+	rc = ieee802154_register_device(lp->dev);
+	if (rc)
+		goto err_irq;
+
+	return rc;
+
+	ieee802154_unregister_device(lp->dev);
+err_irq:
+	free_irq(spi->irq, lp);
+	flush_work(&lp->irqwork);
+err_gpio_dir:
+	if (gpio_is_valid(lp->slp_tr))
+		gpio_free(lp->slp_tr);
+err_slp_tr:
+	gpio_free(lp->rstn);
+err_rstn:
+err_fill:
+	spi_set_drvdata(spi, NULL);
+	mutex_destroy(&lp->bmux);
+	ieee802154_free_device(lp->dev);
+	return rc;
+}
+
+static int __devexit at86rf230_remove(struct spi_device *spi)
+{
+	struct at86rf230_local *lp = spi_get_drvdata(spi);
+
+	ieee802154_unregister_device(lp->dev);
+
+	free_irq(spi->irq, lp);
+	flush_work(&lp->irqwork);
+
+	if (gpio_is_valid(lp->slp_tr))
+		gpio_free(lp->slp_tr);
+	gpio_free(lp->rstn);
+
+	spi_set_drvdata(spi, NULL);
+	mutex_destroy(&lp->bmux);
+	ieee802154_free_device(lp->dev);
+
+	dev_dbg(&spi->dev, "unregistered at86rf230\n");
+	return 0;
+}
+
+static struct spi_driver at86rf230_driver = {
+	.driver = {
+		.name	= "at86rf230",
+		.owner	= THIS_MODULE,
+	},
+	.probe      = at86rf230_probe,
+	.remove     = __devexit_p(at86rf230_remove),
+	.suspend    = at86rf230_suspend,
+	.resume     = at86rf230_resume,
+};
+
+module_spi_driver(at86rf230_driver);
+
+MODULE_DESCRIPTION("AT86RF230 Transceiver Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/net/ieee802154/fakehard.c b/drivers/net/ieee802154/fakehard.c
new file mode 100644
index 0000000..7d39add
--- /dev/null
+++ b/drivers/net/ieee802154/fakehard.c
@@ -0,0 +1,448 @@
+/*
+ * Sample driver for HardMAC IEEE 802.15.4 devices
+ *
+ * Copyright (C) 2009 Siemens AG
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by:
+ * Dmitry Eremin-Solenikov <dmitry.baryshkov@siemens.com>
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+
+#include <net/af_ieee802154.h>
+#include <net/ieee802154_netdev.h>
+#include <net/ieee802154.h>
+#include <net/nl802154.h>
+#include <net/wpan-phy.h>
+
+struct fakehard_priv {
+	struct wpan_phy *phy;
+};
+
+static struct wpan_phy *fake_to_phy(const struct net_device *dev)
+{
+	struct fakehard_priv *priv = netdev_priv(dev);
+	return priv->phy;
+}
+
+/**
+ * fake_get_phy - Return a phy corresponding to this device.
+ * @dev: The network device for which to return the wan-phy object
+ *
+ * This function returns a wpan-phy object corresponding to the passed
+ * network device. Reference counter for wpan-phy object is incremented,
+ * so when the wpan-phy isn't necessary, you should drop the reference
+ * via @wpan_phy_put() call.
+ */
+static struct wpan_phy *fake_get_phy(const struct net_device *dev)
+{
+	struct wpan_phy *phy = fake_to_phy(dev);
+	return to_phy(get_device(&phy->dev));
+}
+
+/**
+ * fake_get_pan_id - Retrieve the PAN ID of the device.
+ * @dev: The network device to retrieve the PAN of.
+ *
+ * Return the ID of the PAN from the PIB.
+ */
+static u16 fake_get_pan_id(const struct net_device *dev)
+{
+	BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+	return 0xeba1;
+}
+
+/**
+ * fake_get_short_addr - Retrieve the short address of the device.
+ * @dev: The network device to retrieve the short address of.
+ *
+ * Returns the IEEE 802.15.4 short-form address cached for this
+ * device. If the device has not yet had a short address assigned
+ * then this should return 0xFFFF to indicate a lack of association.
+ */
+static u16 fake_get_short_addr(const struct net_device *dev)
+{
+	BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+	return 0x1;
+}
+
+/**
+ * fake_get_dsn - Retrieve the DSN of the device.
+ * @dev: The network device to retrieve the DSN for.
+ *
+ * Returns the IEEE 802.15.4 DSN for the network device.
+ * The DSN is the sequence number which will be added to each
+ * packet or MAC command frame by the MAC during transmission.
+ *
+ * DSN means 'Data Sequence Number'.
+ *
+ * Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
+ *       document.
+ */
+static u8 fake_get_dsn(const struct net_device *dev)
+{
+	BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+	return 0x00; /* DSN are implemented in HW, so return just 0 */
+}
+
+/**
+ * fake_get_bsn - Retrieve the BSN of the device.
+ * @dev: The network device to retrieve the BSN for.
+ *
+ * Returns the IEEE 802.15.4 BSN for the network device.
+ * The BSN is the sequence number which will be added to each
+ * beacon frame sent by the MAC.
+ *
+ * BSN means 'Beacon Sequence Number'.
+ *
+ * Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
+ *       document.
+ */
+static u8 fake_get_bsn(const struct net_device *dev)
+{
+	BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+	return 0x00; /* BSN are implemented in HW, so return just 0 */
+}
+
+/**
+ * fake_assoc_req - Make an association request to the HW.
+ * @dev: The network device which we are associating to a network.
+ * @addr: The coordinator with which we wish to associate.
+ * @channel: The channel on which to associate.
+ * @cap: The capability information field to use in the association.
+ *
+ * Start an association with a coordinator. The coordinator's address
+ * and PAN ID can be found in @addr.
+ *
+ * Note: This is in section 7.3.1 and 7.5.3.1 of the IEEE
+ *       802.15.4-2006 document.
+ */
+static int fake_assoc_req(struct net_device *dev,
+		struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap)
+{
+	struct wpan_phy *phy = fake_to_phy(dev);
+
+	mutex_lock(&phy->pib_lock);
+	phy->current_channel = channel;
+	phy->current_page = page;
+	mutex_unlock(&phy->pib_lock);
+
+	/* We simply emulate it here */
+	return ieee802154_nl_assoc_confirm(dev, fake_get_short_addr(dev),
+			IEEE802154_SUCCESS);
+}
+
+/**
+ * fake_assoc_resp - Send an association response to a device.
+ * @dev: The network device on which to send the response.
+ * @addr: The address of the device to respond to.
+ * @short_addr: The assigned short address for the device (if any).
+ * @status: The result of the association request.
+ *
+ * Queue the association response of the coordinator to another
+ * device's attempt to associate with the network which we
+ * coordinate. This is then added to the indirect-send queue to be
+ * transmitted to the end device when it polls for data.
+ *
+ * Note: This is in section 7.3.2 and 7.5.3.1 of the IEEE
+ *       802.15.4-2006 document.
+ */
+static int fake_assoc_resp(struct net_device *dev,
+		struct ieee802154_addr *addr, u16 short_addr, u8 status)
+{
+	return 0;
+}
+
+/**
+ * fake_disassoc_req - Disassociate a device from a network.
+ * @dev: The network device on which we're disassociating a device.
+ * @addr: The device to disassociate from the network.
+ * @reason: The reason to give to the device for being disassociated.
+ *
+ * This sends a disassociation notification to the device being
+ * disassociated from the network.
+ *
+ * Note: This is in section 7.5.3.2 of the IEEE 802.15.4-2006
+ *       document, with the reason described in 7.3.3.2.
+ */
+static int fake_disassoc_req(struct net_device *dev,
+		struct ieee802154_addr *addr, u8 reason)
+{
+	return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
+}
+
+/**
+ * fake_start_req - Start an IEEE 802.15.4 PAN.
+ * @dev: The network device on which to start the PAN.
+ * @addr: The coordinator address to use when starting the PAN.
+ * @channel: The channel on which to start the PAN.
+ * @bcn_ord: Beacon order.
+ * @sf_ord: Superframe order.
+ * @pan_coord: Whether or not we are the PAN coordinator or just
+ *             requesting a realignment perhaps?
+ * @blx: Battery Life Extension feature bitfield.
+ * @coord_realign: Something to realign something else.
+ *
+ * If pan_coord is non-zero then this starts a network with the
+ * provided parameters, otherwise it attempts a coordinator
+ * realignment of the stated network instead.
+ *
+ * Note: This is in section 7.5.2.3 of the IEEE 802.15.4-2006
+ * document, with 7.3.8 describing coordinator realignment.
+ */
+static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
+				u8 channel, u8 page,
+				u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
+				u8 coord_realign)
+{
+	struct wpan_phy *phy = fake_to_phy(dev);
+
+	mutex_lock(&phy->pib_lock);
+	phy->current_channel = channel;
+	phy->current_page = page;
+	mutex_unlock(&phy->pib_lock);
+
+	/* We don't emulate beacons here at all, so START should fail */
+	ieee802154_nl_start_confirm(dev, IEEE802154_INVALID_PARAMETER);
+	return 0;
+}
+
+/**
+ * fake_scan_req - Start a channel scan.
+ * @dev: The network device on which to perform a channel scan.
+ * @type: The type of scan to perform.
+ * @channels: The channel bitmask to scan.
+ * @duration: How long to spend on each channel.
+ *
+ * This starts either a passive (energy) scan or an active (PAN) scan
+ * on the channels indicated in the @channels bitmask. The duration of
+ * the scan is measured in terms of superframe duration. Specifically,
+ * the scan will spend aBaseSuperFrameDuration * ((2^n) + 1) on each
+ * channel.
+ *
+ * Note: This is in section 7.5.2.1 of the IEEE 802.15.4-2006 document.
+ */
+static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
+		u8 page, u8 duration)
+{
+	u8 edl[27] = {};
+	return ieee802154_nl_scan_confirm(dev, IEEE802154_SUCCESS, type,
+			channels, page,
+			type == IEEE802154_MAC_SCAN_ED ? edl : NULL);
+}
+
+static struct ieee802154_mlme_ops fake_mlme = {
+	.assoc_req = fake_assoc_req,
+	.assoc_resp = fake_assoc_resp,
+	.disassoc_req = fake_disassoc_req,
+	.start_req = fake_start_req,
+	.scan_req = fake_scan_req,
+
+	.get_phy = fake_get_phy,
+
+	.get_pan_id = fake_get_pan_id,
+	.get_short_addr = fake_get_short_addr,
+	.get_dsn = fake_get_dsn,
+	.get_bsn = fake_get_bsn,
+};
+
+static int ieee802154_fake_open(struct net_device *dev)
+{
+	netif_start_queue(dev);
+	return 0;
+}
+
+static int ieee802154_fake_close(struct net_device *dev)
+{
+	netif_stop_queue(dev);
+	return 0;
+}
+
+static netdev_tx_t ieee802154_fake_xmit(struct sk_buff *skb,
+					      struct net_device *dev)
+{
+	dev->stats.tx_packets++;
+	dev->stats.tx_bytes += skb->len;
+
+	/* FIXME: do hardware work here ... */
+
+	dev_kfree_skb(skb);
+	return NETDEV_TX_OK;
+}
+
+
+static int ieee802154_fake_ioctl(struct net_device *dev, struct ifreq *ifr,
+		int cmd)
+{
+	struct sockaddr_ieee802154 *sa =
+		(struct sockaddr_ieee802154 *)&ifr->ifr_addr;
+	u16 pan_id, short_addr;
+
+	switch (cmd) {
+	case SIOCGIFADDR:
+		/* FIXME: fixed here, get from device IRL */
+		pan_id = fake_get_pan_id(dev);
+		short_addr = fake_get_short_addr(dev);
+		if (pan_id == IEEE802154_PANID_BROADCAST ||
+		    short_addr == IEEE802154_ADDR_BROADCAST)
+			return -EADDRNOTAVAIL;
+
+		sa->family = AF_IEEE802154;
+		sa->addr.addr_type = IEEE802154_ADDR_SHORT;
+		sa->addr.pan_id = pan_id;
+		sa->addr.short_addr = short_addr;
+		return 0;
+	}
+	return -ENOIOCTLCMD;
+}
+
+static int ieee802154_fake_mac_addr(struct net_device *dev, void *p)
+{
+	return -EBUSY; /* HW address is built into the device */
+}
+
+static const struct net_device_ops fake_ops = {
+	.ndo_open		= ieee802154_fake_open,
+	.ndo_stop		= ieee802154_fake_close,
+	.ndo_start_xmit		= ieee802154_fake_xmit,
+	.ndo_do_ioctl		= ieee802154_fake_ioctl,
+	.ndo_set_mac_address	= ieee802154_fake_mac_addr,
+};
+
+static void ieee802154_fake_destruct(struct net_device *dev)
+{
+	struct wpan_phy *phy = fake_to_phy(dev);
+
+	wpan_phy_unregister(phy);
+	free_netdev(dev);
+	wpan_phy_free(phy);
+}
+
+static void ieee802154_fake_setup(struct net_device *dev)
+{
+	dev->addr_len		= IEEE802154_ADDR_LEN;
+	memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
+	dev->features		= NETIF_F_HW_CSUM;
+	dev->needed_tailroom	= 2; /* FCS */
+	dev->mtu		= 127;
+	dev->tx_queue_len	= 10;
+	dev->type		= ARPHRD_IEEE802154;
+	dev->flags		= IFF_NOARP | IFF_BROADCAST;
+	dev->watchdog_timeo	= 0;
+	dev->destructor		= ieee802154_fake_destruct;
+}
+
+
+static int __devinit ieee802154fake_probe(struct platform_device *pdev)
+{
+	struct net_device *dev;
+	struct fakehard_priv *priv;
+	struct wpan_phy *phy = wpan_phy_alloc(0);
+	int err;
+
+	if (!phy)
+		return -ENOMEM;
+
+	dev = alloc_netdev(sizeof(struct fakehard_priv), "hardwpan%d", ieee802154_fake_setup);
+	if (!dev) {
+		wpan_phy_free(phy);
+		return -ENOMEM;
+	}
+
+	memcpy(dev->dev_addr, "\xba\xbe\xca\xfe\xde\xad\xbe\xef",
+			dev->addr_len);
+	memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
+
+	/*
+	 * For now we'd like to emulate 2.4 GHz-only device,
+	 * both O-QPSK and CSS
+	 */
+	/* 2.4 GHz O-QPSK 802.15.4-2003 */
+	phy->channels_supported[0] |= 0x7FFF800;
+	/* 2.4 GHz CSS 802.15.4a-2007 */
+	phy->channels_supported[3] |= 0x3fff;
+
+	phy->transmit_power = 0xbf;
+
+	dev->netdev_ops = &fake_ops;
+	dev->ml_priv = &fake_mlme;
+
+	priv = netdev_priv(dev);
+	priv->phy = phy;
+
+	wpan_phy_set_dev(phy, &pdev->dev);
+	SET_NETDEV_DEV(dev, &phy->dev);
+
+	platform_set_drvdata(pdev, dev);
+
+	err = wpan_phy_register(phy);
+	if (err)
+		goto out;
+
+	err = register_netdev(dev);
+	if (err < 0)
+		goto out;
+
+	dev_info(&pdev->dev, "Added ieee802154 HardMAC hardware\n");
+	return 0;
+
+out:
+	unregister_netdev(dev);
+	return err;
+}
+
+static int __devexit ieee802154fake_remove(struct platform_device *pdev)
+{
+	struct net_device *dev = platform_get_drvdata(pdev);
+	unregister_netdev(dev);
+	return 0;
+}
+
+static struct platform_device *ieee802154fake_dev;
+
+static struct platform_driver ieee802154fake_driver = {
+	.probe = ieee802154fake_probe,
+	.remove = __devexit_p(ieee802154fake_remove),
+	.driver = {
+			.name = "ieee802154hardmac",
+			.owner = THIS_MODULE,
+	},
+};
+
+static __init int fake_init(void)
+{
+	ieee802154fake_dev = platform_device_register_simple(
+			"ieee802154hardmac", -1, NULL, 0);
+	return platform_driver_register(&ieee802154fake_driver);
+}
+
+static __exit void fake_exit(void)
+{
+	platform_driver_unregister(&ieee802154fake_driver);
+	platform_device_unregister(ieee802154fake_dev);
+}
+
+module_init(fake_init);
+module_exit(fake_exit);
+MODULE_LICENSE("GPL");
diff --git a/drivers/net/ieee802154/fakelb.c b/drivers/net/ieee802154/fakelb.c
new file mode 100644
index 0000000..e7456fc
--- /dev/null
+++ b/drivers/net/ieee802154/fakelb.c
@@ -0,0 +1,294 @@
+/*
+ * Loopback IEEE 802.15.4 interface
+ *
+ * Copyright 2007-2012 Siemens AG
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by:
+ * Sergey Lapin <slapin@ossfans.org>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+#include <linux/module.h>
+#include <linux/timer.h>
+#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+#include <net/mac802154.h>
+#include <net/wpan-phy.h>
+
+static int numlbs = 1;
+
+struct fakelb_dev_priv {
+	struct ieee802154_dev *dev;
+
+	struct list_head list;
+	struct fakelb_priv *fake;
+
+	spinlock_t lock;
+	bool working;
+};
+
+struct fakelb_priv {
+	struct list_head list;
+	rwlock_t lock;
+};
+
+static int
+fakelb_hw_ed(struct ieee802154_dev *dev, u8 *level)
+{
+	might_sleep();
+	BUG_ON(!level);
+	*level = 0xbe;
+
+	return 0;
+}
+
+static int
+fakelb_hw_channel(struct ieee802154_dev *dev, int page, int channel)
+{
+	pr_debug("set channel to %d\n", channel);
+
+	might_sleep();
+	dev->phy->current_page = page;
+	dev->phy->current_channel = channel;
+
+	return 0;
+}
+
+static void
+fakelb_hw_deliver(struct fakelb_dev_priv *priv, struct sk_buff *skb)
+{
+	struct sk_buff *newskb;
+
+	spin_lock(&priv->lock);
+	if (priv->working) {
+		newskb = pskb_copy(skb, GFP_ATOMIC);
+		ieee802154_rx_irqsafe(priv->dev, newskb, 0xcc);
+	}
+	spin_unlock(&priv->lock);
+}
+
+static int
+fakelb_hw_xmit(struct ieee802154_dev *dev, struct sk_buff *skb)
+{
+	struct fakelb_dev_priv *priv = dev->priv;
+	struct fakelb_priv *fake = priv->fake;
+
+	might_sleep();
+
+	read_lock_bh(&fake->lock);
+	if (priv->list.next == priv->list.prev) {
+		/* we are the only one device */
+		fakelb_hw_deliver(priv, skb);
+	} else {
+		struct fakelb_dev_priv *dp;
+		list_for_each_entry(dp, &priv->fake->list, list) {
+			if (dp != priv &&
+			    (dp->dev->phy->current_channel ==
+			     priv->dev->phy->current_channel))
+				fakelb_hw_deliver(dp, skb);
+		}
+	}
+	read_unlock_bh(&fake->lock);
+
+	return 0;
+}
+
+static int
+fakelb_hw_start(struct ieee802154_dev *dev) {
+	struct fakelb_dev_priv *priv = dev->priv;
+	int ret = 0;
+
+	spin_lock(&priv->lock);
+	if (priv->working)
+		ret = -EBUSY;
+	else
+		priv->working = 1;
+	spin_unlock(&priv->lock);
+
+	return ret;
+}
+
+static void
+fakelb_hw_stop(struct ieee802154_dev *dev) {
+	struct fakelb_dev_priv *priv = dev->priv;
+
+	spin_lock(&priv->lock);
+	priv->working = 0;
+	spin_unlock(&priv->lock);
+}
+
+static struct ieee802154_ops fakelb_ops = {
+	.owner = THIS_MODULE,
+	.xmit = fakelb_hw_xmit,
+	.ed = fakelb_hw_ed,
+	.set_channel = fakelb_hw_channel,
+	.start = fakelb_hw_start,
+	.stop = fakelb_hw_stop,
+};
+
+/* Number of dummy devices to be set up by this module. */
+module_param(numlbs, int, 0);
+MODULE_PARM_DESC(numlbs, " number of pseudo devices");
+
+static int fakelb_add_one(struct device *dev, struct fakelb_priv *fake)
+{
+	struct fakelb_dev_priv *priv;
+	int err;
+	struct ieee802154_dev *ieee;
+
+	ieee = ieee802154_alloc_device(sizeof(*priv), &fakelb_ops);
+	if (!ieee)
+		return -ENOMEM;
+
+	priv = ieee->priv;
+	priv->dev = ieee;
+
+	/* 868 MHz BPSK	802.15.4-2003 */
+	ieee->phy->channels_supported[0] |= 1;
+	/* 915 MHz BPSK	802.15.4-2003 */
+	ieee->phy->channels_supported[0] |= 0x7fe;
+	/* 2.4 GHz O-QPSK 802.15.4-2003 */
+	ieee->phy->channels_supported[0] |= 0x7FFF800;
+	/* 868 MHz ASK 802.15.4-2006 */
+	ieee->phy->channels_supported[1] |= 1;
+	/* 915 MHz ASK 802.15.4-2006 */
+	ieee->phy->channels_supported[1] |= 0x7fe;
+	/* 868 MHz O-QPSK 802.15.4-2006 */
+	ieee->phy->channels_supported[2] |= 1;
+	/* 915 MHz O-QPSK 802.15.4-2006 */
+	ieee->phy->channels_supported[2] |= 0x7fe;
+	/* 2.4 GHz CSS 802.15.4a-2007 */
+	ieee->phy->channels_supported[3] |= 0x3fff;
+	/* UWB Sub-gigahertz 802.15.4a-2007 */
+	ieee->phy->channels_supported[4] |= 1;
+	/* UWB Low band 802.15.4a-2007 */
+	ieee->phy->channels_supported[4] |= 0x1e;
+	/* UWB High band 802.15.4a-2007 */
+	ieee->phy->channels_supported[4] |= 0xffe0;
+	/* 750 MHz O-QPSK 802.15.4c-2009 */
+	ieee->phy->channels_supported[5] |= 0xf;
+	/* 750 MHz MPSK 802.15.4c-2009 */
+	ieee->phy->channels_supported[5] |= 0xf0;
+	/* 950 MHz BPSK 802.15.4d-2009 */
+	ieee->phy->channels_supported[6] |= 0x3ff;
+	/* 950 MHz GFSK 802.15.4d-2009 */
+	ieee->phy->channels_supported[6] |= 0x3ffc00;
+
+	INIT_LIST_HEAD(&priv->list);
+	priv->fake = fake;
+
+	spin_lock_init(&priv->lock);
+
+	ieee->parent = dev;
+
+	err = ieee802154_register_device(ieee);
+	if (err)
+		goto err_reg;
+
+	write_lock_bh(&fake->lock);
+	list_add_tail(&priv->list, &fake->list);
+	write_unlock_bh(&fake->lock);
+
+	return 0;
+
+err_reg:
+	ieee802154_free_device(priv->dev);
+	return err;
+}
+
+static void fakelb_del(struct fakelb_dev_priv *priv)
+{
+	write_lock_bh(&priv->fake->lock);
+	list_del(&priv->list);
+	write_unlock_bh(&priv->fake->lock);
+
+	ieee802154_unregister_device(priv->dev);
+	ieee802154_free_device(priv->dev);
+}
+
+static int __devinit fakelb_probe(struct platform_device *pdev)
+{
+	struct fakelb_priv *priv;
+	struct fakelb_dev_priv *dp;
+	int err = -ENOMEM;
+	int i;
+
+	priv = kzalloc(sizeof(struct fakelb_priv), GFP_KERNEL);
+	if (!priv)
+		goto err_alloc;
+
+	INIT_LIST_HEAD(&priv->list);
+	rwlock_init(&priv->lock);
+
+	for (i = 0; i < numlbs; i++) {
+		err = fakelb_add_one(&pdev->dev, priv);
+		if (err < 0)
+			goto err_slave;
+	}
+
+	platform_set_drvdata(pdev, priv);
+	dev_info(&pdev->dev, "added ieee802154 hardware\n");
+	return 0;
+
+err_slave:
+	list_for_each_entry(dp, &priv->list, list)
+		fakelb_del(dp);
+	kfree(priv);
+err_alloc:
+	return err;
+}
+
+static int __devexit fakelb_remove(struct platform_device *pdev)
+{
+	struct fakelb_priv *priv = platform_get_drvdata(pdev);
+	struct fakelb_dev_priv *dp, *temp;
+
+	list_for_each_entry_safe(dp, temp, &priv->list, list)
+		fakelb_del(dp);
+	kfree(priv);
+
+	return 0;
+}
+
+static struct platform_device *ieee802154fake_dev;
+
+static struct platform_driver ieee802154fake_driver = {
+	.probe = fakelb_probe,
+	.remove = __devexit_p(fakelb_remove),
+	.driver = {
+			.name = "ieee802154fakelb",
+			.owner = THIS_MODULE,
+	},
+};
+
+static __init int fakelb_init_module(void)
+{
+	ieee802154fake_dev = platform_device_register_simple(
+			     "ieee802154fakelb", -1, NULL, 0);
+	return platform_driver_register(&ieee802154fake_driver);
+}
+
+static __exit void fake_remove_module(void)
+{
+	platform_driver_unregister(&ieee802154fake_driver);
+	platform_device_unregister(ieee802154fake_dev);
+}
+
+module_init(fakelb_init_module);
+module_exit(fake_remove_module);
+MODULE_LICENSE("GPL");
-- 
cgit v1.1


From 4cbdaf6d520b6bd9a1565525e5ad1967cb74e191 Mon Sep 17 00:00:00 2001
From: Sathya Perla <sathya.perla@emulex.com>
Date: Tue, 28 Aug 2012 20:37:40 +0000
Subject: be2net: create RSS rings even in multi-channel configs

Changes from commit df505e were incorrectly over-written by commit 10ef9ab.
Fixing the same.

Change log of the original fix:
    Currently RSS rings are not created in a multi-channel config.
    RSS rings can be created on one (out of four) interfaces per port in a
    multi-channel config. Doing this insulates the driver from a FW bug wherin
    multi-channel config is wrongly reported even when not enabled. This also
    helps performance in a multi-channel config, as one interface per port gets
    RSS rings.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/emulex/benet/be_main.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 90a903d8..d86d25c 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -2176,8 +2176,7 @@ static uint be_num_rss_want(struct be_adapter *adapter)
 {
 	u32 num = 0;
 	if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&
-	     !sriov_want(adapter) && be_physfn(adapter) &&
-	     !be_is_mc(adapter)) {
+	     !sriov_want(adapter) && be_physfn(adapter)) {
 		num = (adapter->be3_native) ? BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;
 		num = min_t(u32, num, (u32)netif_get_num_default_rss_queues());
 	}
-- 
cgit v1.1


From 7c5a524221dc3cf599a6aa4773eb0c1e2ca38adb Mon Sep 17 00:00:00 2001
From: Vasundhara Volam <vasundhara.volam@emulex.com>
Date: Tue, 28 Aug 2012 20:37:41 +0000
Subject: be2net: fix max VFs reported by HW

BE3 FW allocates VF resources for upto 30 VFs per PF while a max value of 32
may be reported via PCI config space. Fix this in the driver.

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/emulex/benet/be.h      | 1 +
 drivers/net/ethernet/emulex/benet/be_main.c | 2 ++
 2 files changed, 3 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h
index d266c86..5b622993 100644
--- a/drivers/net/ethernet/emulex/benet/be.h
+++ b/drivers/net/ethernet/emulex/benet/be.h
@@ -110,6 +110,7 @@ static inline char *nic_name(struct pci_dev *pdev)
 #define MAX_RX_POST		BE_NAPI_WEIGHT /* Frags posted at a time */
 #define RX_FRAGS_REFILL_WM	(RX_Q_LEN - MAX_RX_POST)
 
+#define MAX_VFS			30 /* Max VFs supported by BE3 FW */
 #define FW_VER_LEN		32
 
 struct be_dma_mem {
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index d86d25c..def2f66 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -2723,6 +2723,8 @@ static int be_get_config(struct be_adapter *adapter)
 	if (pos) {
 		pci_read_config_word(adapter->pdev, pos + PCI_SRIOV_TOTAL_VF,
 				     &dev_num_vfs);
+		if (!lancer_chip(adapter))
+			dev_num_vfs = min_t(u16, dev_num_vfs, MAX_VFS);
 		adapter->dev_num_vfs = dev_num_vfs;
 	}
 	return 0;
-- 
cgit v1.1


From 8a046d3bfd5126b724a5352a757310229d4d3ff3 Mon Sep 17 00:00:00 2001
From: Vasundhara Volam <vasundhara.volam@emulex.com>
Date: Tue, 28 Aug 2012 20:37:42 +0000
Subject: be2net: fix FW default for VF tx-rate

BE3 FW initializes VF tx-rate to 100Mbps. Fix this to 10Gbps.

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/emulex/benet/be_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index def2f66..1494f2fc 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -2645,8 +2645,8 @@ static int be_vf_setup(struct be_adapter *adapter)
 	}
 
 	for_all_vfs(adapter, vf_cfg, vf) {
-		status = be_cmd_link_status_query(adapter, NULL, &lnk_speed,
-						  NULL, vf + 1);
+		lnk_speed = 1000;
+		status = be_cmd_set_qos(adapter, lnk_speed, vf + 1);
 		if (status)
 			goto err;
 		vf_cfg->tx_rate = lnk_speed * 10;
-- 
cgit v1.1


From cc7d723adb7778e4eff8956f2d137c0729b9a81e Mon Sep 17 00:00:00 2001
From: Sathya Perla <sathya.perla@emulex.com>
Date: Tue, 28 Aug 2012 20:37:43 +0000
Subject: be2net: fixup malloc/free of adapter->pmac_id

Free was missing and kcalloc() is better placed in be_ctrl_init()

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/emulex/benet/be_main.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 1494f2fc..6d139d6 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -3438,6 +3438,7 @@ static void be_ctrl_cleanup(struct be_adapter *adapter)
 	if (mem->va)
 		dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
 				  mem->dma);
+	kfree(adapter->pmac_id);
 }
 
 static int be_ctrl_init(struct be_adapter *adapter)
@@ -3474,6 +3475,12 @@ static int be_ctrl_init(struct be_adapter *adapter)
 	}
 	memset(rx_filter->va, 0, rx_filter->size);
 
+	/* primary mac needs 1 pmac entry */
+	adapter->pmac_id = kcalloc(adapter->max_pmac_cnt + 1,
+				   sizeof(*adapter->pmac_id), GFP_KERNEL);
+	if (!adapter->pmac_id)
+		return -ENOMEM;
+
 	mutex_init(&adapter->mbox_lock);
 	spin_lock_init(&adapter->mcc_lock);
 	spin_lock_init(&adapter->mcc_cq_lock);
@@ -3610,12 +3617,6 @@ static int be_get_initial_config(struct be_adapter *adapter)
 	else
 		adapter->max_pmac_cnt = BE_VF_UC_PMAC_COUNT;
 
-	/* primary mac needs 1 pmac entry */
-	adapter->pmac_id = kcalloc(adapter->max_pmac_cnt + 1,
-				  sizeof(u32), GFP_KERNEL);
-	if (!adapter->pmac_id)
-		return -ENOMEM;
-
 	status = be_cmd_get_cntl_attributes(adapter);
 	if (status)
 		return status;
-- 
cgit v1.1


From 522609f27ac3c4b031b58fee15c36689462a2919 Mon Sep 17 00:00:00 2001
From: Vasundhara Volam <vasundhara.volam@emulex.com>
Date: Tue, 28 Aug 2012 20:37:44 +0000
Subject: be2net: modify log msg for lack of privilege error

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/emulex/benet/be_cmds.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c
index 7fac97b..fc68ca0 100644
--- a/drivers/net/ethernet/emulex/benet/be_cmds.c
+++ b/drivers/net/ethernet/emulex/benet/be_cmds.c
@@ -120,7 +120,7 @@ static int be_mcc_compl_process(struct be_adapter *adapter,
 
 		if (compl_status == MCC_STATUS_UNAUTHORIZED_REQUEST) {
 			dev_warn(&adapter->pdev->dev,
-				 "opcode %d-%d is not permitted\n",
+				 "VF is not privileged to issue opcode %d-%d\n",
 				 opcode, subsystem);
 		} else {
 			extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
-- 
cgit v1.1


From 19bcd6c618ac9356c076d711fab7046664b3860a Mon Sep 17 00:00:00 2001
From: Timur Tabi <timur@freescale.com>
Date: Wed, 29 Aug 2012 08:07:57 +0000
Subject: net/freescale: do not export any functions from fsl_pq_mdio.c

None of the functions in fsl_pq_mdio.c are used by any other source file,
so there's no point in exporting them.  Merge the header file into the
source file, make all the functions static, remove any EXPORT_SYMBOL
statements, and delete any #include "fsl_pq_mdio.h" statements.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/freescale/fsl_pq_mdio.c | 38 ++++++++++++++++----
 drivers/net/ethernet/freescale/fsl_pq_mdio.h | 52 ----------------------------
 drivers/net/ethernet/freescale/gianfar.c     |  1 -
 drivers/net/ethernet/freescale/ucc_geth.c    |  1 -
 4 files changed, 31 insertions(+), 61 deletions(-)
 delete mode 100644 drivers/net/ethernet/freescale/fsl_pq_mdio.h

(limited to 'drivers')

diff --git a/drivers/net/ethernet/freescale/fsl_pq_mdio.c b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
index 9527b28..bc19fe0 100644
--- a/drivers/net/ethernet/freescale/fsl_pq_mdio.c
+++ b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
@@ -45,7 +45,31 @@
 #include <asm/ucc.h>
 
 #include "gianfar.h"
-#include "fsl_pq_mdio.h"
+
+#define MIIMIND_BUSY		0x00000001
+#define MIIMIND_NOTVALID	0x00000004
+#define MIIMCFG_INIT_VALUE	0x00000007
+#define MIIMCFG_RESET		0x80000000
+
+#define MII_READ_COMMAND	0x00000001
+
+struct fsl_pq_mdio {
+	u8 res1[16];
+	u32 ieventm;	/* MDIO Interrupt event register (for etsec2)*/
+	u32 imaskm;	/* MDIO Interrupt mask register (for etsec2)*/
+	u8 res2[4];
+	u32 emapm;	/* MDIO Event mapping register (for etsec2)*/
+	u8 res3[1280];
+	u32 miimcfg;	/* MII management configuration reg */
+	u32 miimcom;	/* MII management command reg */
+	u32 miimadd;	/* MII management address reg */
+	u32 miimcon;	/* MII management control reg */
+	u32 miimstat;	/* MII management status reg */
+	u32 miimind;	/* MII management indication reg */
+	u8 res4[28];
+	u32 utbipar;	/* TBI phy address reg (only on UCC) */
+	u8 res5[2728];
+} __packed;
 
 /* Number of microseconds to wait for an MII register to respond */
 #define MII_TIMEOUT	1000
@@ -64,7 +88,7 @@ struct fsl_pq_mdio_priv {
  * the local mdio pins, which may not be the same as system mdio bus, used for
  * controlling the external PHYs, for example.
  */
-int fsl_pq_local_mdio_write(struct fsl_pq_mdio __iomem *regs, int mii_id,
+static int fsl_pq_local_mdio_write(struct fsl_pq_mdio __iomem *regs, int mii_id,
 		int regnum, u16 value)
 {
 	u32 status;
@@ -92,7 +116,7 @@ int fsl_pq_local_mdio_write(struct fsl_pq_mdio __iomem *regs, int mii_id,
  * and are always tied to the local mdio pins, which may not be the
  * same as system mdio bus, used for controlling the external PHYs, for eg.
  */
-int fsl_pq_local_mdio_read(struct fsl_pq_mdio __iomem *regs,
+static int fsl_pq_local_mdio_read(struct fsl_pq_mdio __iomem *regs,
 		int mii_id, int regnum)
 {
 	u16 value;
@@ -129,7 +153,8 @@ static struct fsl_pq_mdio __iomem *fsl_pq_mdio_get_regs(struct mii_bus *bus)
  * Write value to the PHY at mii_id at register regnum,
  * on the bus, waiting until the write is done before returning.
  */
-int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 value)
+static int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
+		u16 value)
 {
 	struct fsl_pq_mdio __iomem *regs = fsl_pq_mdio_get_regs(bus);
 
@@ -141,7 +166,7 @@ int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 value)
  * Read the bus for PHY at addr mii_id, register regnum, and
  * return the value.  Clears miimcom first.
  */
-int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
+static int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
 {
 	struct fsl_pq_mdio __iomem *regs = fsl_pq_mdio_get_regs(bus);
 
@@ -178,7 +203,7 @@ static int fsl_pq_mdio_reset(struct mii_bus *bus)
 	return 0;
 }
 
-void fsl_pq_mdio_bus_name(char *name, struct device_node *np)
+static void fsl_pq_mdio_bus_name(char *name, struct device_node *np)
 {
 	const u32 *addr;
 	u64 taddr = OF_BAD_ADDR;
@@ -190,7 +215,6 @@ void fsl_pq_mdio_bus_name(char *name, struct device_node *np)
 	snprintf(name, MII_BUS_ID_SIZE, "%s@%llx", np->name,
 		(unsigned long long)taddr);
 }
-EXPORT_SYMBOL_GPL(fsl_pq_mdio_bus_name);
 
 
 static u32 __iomem *get_gfar_tbipa(struct fsl_pq_mdio __iomem *regs, struct device_node *np)
diff --git a/drivers/net/ethernet/freescale/fsl_pq_mdio.h b/drivers/net/ethernet/freescale/fsl_pq_mdio.h
deleted file mode 100644
index bd17a2a..0000000
--- a/drivers/net/ethernet/freescale/fsl_pq_mdio.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Freescale PowerQUICC MDIO Driver -- MII Management Bus Implementation
- * Driver for the MDIO bus controller on Freescale PowerQUICC processors
- *
- * Author: Andy Fleming
- * Modifier: Sandeep Gopalpet
- *
- * Copyright 2002-2004, 2008-2009 Freescale Semiconductor, Inc.
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- */
-#ifndef __FSL_PQ_MDIO_H
-#define __FSL_PQ_MDIO_H
-
-#define MIIMIND_BUSY            0x00000001
-#define MIIMIND_NOTVALID        0x00000004
-#define MIIMCFG_INIT_VALUE	0x00000007
-#define MIIMCFG_RESET           0x80000000
-
-#define MII_READ_COMMAND       0x00000001
-
-struct fsl_pq_mdio {
-	u8 res1[16];
-	u32 ieventm;	/* MDIO Interrupt event register (for etsec2)*/
-	u32 imaskm;	/* MDIO Interrupt mask register (for etsec2)*/
-	u8 res2[4];
-	u32 emapm;	/* MDIO Event mapping register (for etsec2)*/
-	u8 res3[1280];
-	u32 miimcfg;		/* MII management configuration reg */
-	u32 miimcom;		/* MII management command reg */
-	u32 miimadd;		/* MII management address reg */
-	u32 miimcon;		/* MII management control reg */
-	u32 miimstat;		/* MII management status reg */
-	u32 miimind;		/* MII management indication reg */
-	u8 reserved[28];	/* Space holder */
-	u32 utbipar;		/* TBI phy address reg (only on UCC) */
-	u8 res4[2728];
-} __packed;
-
-int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum);
-int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 value);
-int fsl_pq_local_mdio_write(struct fsl_pq_mdio __iomem *regs, int mii_id,
-			  int regnum, u16 value);
-int fsl_pq_local_mdio_read(struct fsl_pq_mdio __iomem *regs, int mii_id, int regnum);
-int __init fsl_pq_mdio_init(void);
-void fsl_pq_mdio_exit(void);
-void fsl_pq_mdio_bus_name(char *name, struct device_node *np);
-#endif /* FSL_PQ_MDIO_H */
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 4605f72..f762a7f 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -100,7 +100,6 @@
 #include <linux/of_net.h>
 
 #include "gianfar.h"
-#include "fsl_pq_mdio.h"
 
 #define TX_TIMEOUT      (1*HZ)
 
diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c
index 21c6574..1642884 100644
--- a/drivers/net/ethernet/freescale/ucc_geth.c
+++ b/drivers/net/ethernet/freescale/ucc_geth.c
@@ -42,7 +42,6 @@
 #include <asm/machdep.h>
 
 #include "ucc_geth.h"
-#include "fsl_pq_mdio.h"
 
 #undef DEBUG
 
-- 
cgit v1.1


From 1aa06d42d98ef96e92857802c31f662fa971247b Mon Sep 17 00:00:00 2001
From: Timur Tabi <timur@freescale.com>
Date: Wed, 29 Aug 2012 08:07:58 +0000
Subject: net/fsl_pq_mdio: trim #include statements

Remove several unnecessary #include statements.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/freescale/fsl_pq_mdio.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/freescale/fsl_pq_mdio.c b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
index bc19fe0..edaa25e 100644
--- a/drivers/net/ethernet/freescale/fsl_pq_mdio.c
+++ b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
@@ -19,30 +19,18 @@
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/errno.h>
-#include <linux/unistd.h>
 #include <linux/slab.h>
-#include <linux/interrupt.h>
 #include <linux/init.h>
 #include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/spinlock.h>
-#include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/crc32.h>
 #include <linux/mii.h>
-#include <linux/phy.h>
-#include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_mdio.h>
 #include <linux/of_platform.h>
 
 #include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/ucc.h>
+#include <asm/ucc.h>	/* for ucc_set_qe_mux_mii_mng() */
 
 #include "gianfar.h"
 
-- 
cgit v1.1


From 69cfb41941638d3070c284f3e8849dc5b356fc3f Mon Sep 17 00:00:00 2001
From: Timur Tabi <timur@freescale.com>
Date: Wed, 29 Aug 2012 08:07:59 +0000
Subject: net/fsl_pq_mdio: merge some functions together

A few small functions were called only by other functions in the same
file, so merge them together.  One function, for example, was calculating
the device address even though the caller was doing the same thing.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/freescale/fsl_pq_mdio.c | 92 ++++++++--------------------
 1 file changed, 26 insertions(+), 66 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/freescale/fsl_pq_mdio.c b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
index edaa25e..d5b7590 100644
--- a/drivers/net/ethernet/freescale/fsl_pq_mdio.c
+++ b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
@@ -68,17 +68,19 @@ struct fsl_pq_mdio_priv {
 };
 
 /*
- * Write value to the PHY at mii_id at register regnum,
- * on the bus attached to the local interface, which may be different from the
- * generic mdio bus (tied to a single interface), waiting until the write is
- * done before returning. This is helpful in programming interfaces like
- * the TBI which control interfaces like onchip SERDES and are always tied to
- * the local mdio pins, which may not be the same as system mdio bus, used for
+ * Write value to the PHY at mii_id at register regnum, on the bus attached
+ * to the local interface, which may be different from the generic mdio bus
+ * (tied to a single interface), waiting until the write is done before
+ * returning. This is helpful in programming interfaces like the TBI which
+ * control interfaces like onchip SERDES and are always tied to the local
+ * mdio pins, which may not be the same as system mdio bus, used for
  * controlling the external PHYs, for example.
  */
-static int fsl_pq_local_mdio_write(struct fsl_pq_mdio __iomem *regs, int mii_id,
-		int regnum, u16 value)
+static int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
+		u16 value)
 {
+	struct fsl_pq_mdio_priv *priv = bus->priv;
+	struct fsl_pq_mdio __iomem *regs = priv->regs;
 	u32 status;
 
 	/* Set the PHY address and the register address we want to write */
@@ -95,20 +97,21 @@ static int fsl_pq_local_mdio_write(struct fsl_pq_mdio __iomem *regs, int mii_id,
 }
 
 /*
- * Read the bus for PHY at addr mii_id, register regnum, and
- * return the value.  Clears miimcom first.  All PHY operation
- * done on the bus attached to the local interface,
- * which may be different from the generic mdio bus
- * This is helpful in programming interfaces like
- * the TBI which, in turn, control interfaces like onchip SERDES
- * and are always tied to the local mdio pins, which may not be the
+ * Read the bus for PHY at addr mii_id, register regnum, and return the value.
+ * Clears miimcom first.
+ *
+ * All PHY operation done on the bus attached to the local interface, which
+ * may be different from the generic mdio bus.  This is helpful in programming
+ * interfaces like the TBI which, in turn, control interfaces like on-chip
+ * SERDES and are always tied to the local mdio pins, which may not be the
  * same as system mdio bus, used for controlling the external PHYs, for eg.
  */
-static int fsl_pq_local_mdio_read(struct fsl_pq_mdio __iomem *regs,
-		int mii_id, int regnum)
+static int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
 {
-	u16 value;
+	struct fsl_pq_mdio_priv *priv = bus->priv;
+	struct fsl_pq_mdio __iomem *regs = priv->regs;
 	u32 status;
+	u16 value;
 
 	/* Set the PHY address and the register address we want to read */
 	out_be32(&regs->miimadd, (mii_id << 8) | regnum);
@@ -130,42 +133,11 @@ static int fsl_pq_local_mdio_read(struct fsl_pq_mdio __iomem *regs,
 	return value;
 }
 
-static struct fsl_pq_mdio __iomem *fsl_pq_mdio_get_regs(struct mii_bus *bus)
-{
-	struct fsl_pq_mdio_priv *priv = bus->priv;
-
-	return priv->regs;
-}
-
-/*
- * Write value to the PHY at mii_id at register regnum,
- * on the bus, waiting until the write is done before returning.
- */
-static int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
-		u16 value)
-{
-	struct fsl_pq_mdio __iomem *regs = fsl_pq_mdio_get_regs(bus);
-
-	/* Write to the local MII regs */
-	return fsl_pq_local_mdio_write(regs, mii_id, regnum, value);
-}
-
-/*
- * Read the bus for PHY at addr mii_id, register regnum, and
- * return the value.  Clears miimcom first.
- */
-static int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
-{
-	struct fsl_pq_mdio __iomem *regs = fsl_pq_mdio_get_regs(bus);
-
-	/* Read the local MII regs */
-	return fsl_pq_local_mdio_read(regs, mii_id, regnum);
-}
-
 /* Reset the MIIM registers, and wait for the bus to free */
 static int fsl_pq_mdio_reset(struct mii_bus *bus)
 {
-	struct fsl_pq_mdio __iomem *regs = fsl_pq_mdio_get_regs(bus);
+	struct fsl_pq_mdio_priv *priv = bus->priv;
+	struct fsl_pq_mdio __iomem *regs = priv->regs;
 	u32 status;
 
 	mutex_lock(&bus->mdio_lock);
@@ -191,20 +163,6 @@ static int fsl_pq_mdio_reset(struct mii_bus *bus)
 	return 0;
 }
 
-static void fsl_pq_mdio_bus_name(char *name, struct device_node *np)
-{
-	const u32 *addr;
-	u64 taddr = OF_BAD_ADDR;
-
-	addr = of_get_address(np, 0, NULL, NULL);
-	if (addr)
-		taddr = of_translate_address(np, addr);
-
-	snprintf(name, MII_BUS_ID_SIZE, "%s@%llx", np->name,
-		(unsigned long long)taddr);
-}
-
-
 static u32 __iomem *get_gfar_tbipa(struct fsl_pq_mdio __iomem *regs, struct device_node *np)
 {
 #if defined(CONFIG_GIANFAR) || defined(CONFIG_GIANFAR_MODULE)
@@ -298,7 +256,6 @@ static int fsl_pq_mdio_probe(struct platform_device *ofdev)
 	new_bus->write = &fsl_pq_mdio_write,
 	new_bus->reset = &fsl_pq_mdio_reset,
 	new_bus->priv = priv;
-	fsl_pq_mdio_bus_name(new_bus->id, np);
 
 	addrp = of_get_address(np, 0, &size, NULL);
 	if (!addrp) {
@@ -313,6 +270,9 @@ static int fsl_pq_mdio_probe(struct platform_device *ofdev)
 		goto err_free_bus;
 	}
 
+	snprintf(new_bus->id, MII_BUS_ID_SIZE, "%s@%llx", np->name,
+		(unsigned long long)addr);
+
 	map = ioremap(addr, size);
 	if (!map) {
 		err = -ENOMEM;
-- 
cgit v1.1


From 5078ac79588600208ec21d1c7781e5cd8a7ab830 Mon Sep 17 00:00:00 2001
From: Timur Tabi <timur@freescale.com>
Date: Wed, 29 Aug 2012 08:08:00 +0000
Subject: net/fsl_pq_mdio: various small fixes

1) Replace printk with dev_err

2) Fix some whitespace mistakes

3) Rename "ofdev" to "pdev", since it's a platform_device now

4) Fix an inadvertent compound statement by replacing commas with semicolons

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/freescale/fsl_pq_mdio.c | 27 +++++++++++++--------------
 1 file changed, 13 insertions(+), 14 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/freescale/fsl_pq_mdio.c b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
index d5b7590..44f00a4 100644
--- a/drivers/net/ethernet/freescale/fsl_pq_mdio.c
+++ b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
@@ -155,8 +155,7 @@ static int fsl_pq_mdio_reset(struct mii_bus *bus)
 	mutex_unlock(&bus->mdio_lock);
 
 	if (!status) {
-		printk(KERN_ERR "%s: The MII Bus is stuck!\n",
-				bus->name);
+		dev_err(&bus->dev, "timeout waiting for MII bus\n");
 		return -EBUSY;
 	}
 
@@ -173,7 +172,7 @@ static u32 __iomem *get_gfar_tbipa(struct fsl_pq_mdio __iomem *regs, struct devi
 	 * Also, we have to cast back to struct gfar because of
 	 * definition weirdness done in gianfar.h.
 	 */
-	if(of_device_is_compatible(np, "fsl,gianfar-mdio") ||
+	if (of_device_is_compatible(np, "fsl,gianfar-mdio") ||
 		of_device_is_compatible(np, "fsl,gianfar-tbi") ||
 		of_device_is_compatible(np, "gianfar")) {
 		enet_regs = (struct gfar __iomem *)regs;
@@ -227,9 +226,9 @@ static int get_ucc_id_for_range(u64 start, u64 end, u32 *ucc_id)
 #endif
 }
 
-static int fsl_pq_mdio_probe(struct platform_device *ofdev)
+static int fsl_pq_mdio_probe(struct platform_device *pdev)
 {
-	struct device_node *np = ofdev->dev.of_node;
+	struct device_node *np = pdev->dev.of_node;
 	struct device_node *tbi;
 	struct fsl_pq_mdio_priv *priv;
 	struct fsl_pq_mdio __iomem *regs = NULL;
@@ -252,9 +251,9 @@ static int fsl_pq_mdio_probe(struct platform_device *ofdev)
 	}
 
 	new_bus->name = "Freescale PowerQUICC MII Bus",
-	new_bus->read = &fsl_pq_mdio_read,
-	new_bus->write = &fsl_pq_mdio_write,
-	new_bus->reset = &fsl_pq_mdio_reset,
+	new_bus->read = &fsl_pq_mdio_read;
+	new_bus->write = &fsl_pq_mdio_write;
+	new_bus->reset = &fsl_pq_mdio_reset;
 	new_bus->priv = priv;
 
 	addrp = of_get_address(np, 0, &size, NULL);
@@ -295,8 +294,8 @@ static int fsl_pq_mdio_probe(struct platform_device *ofdev)
 		goto err_unmap_regs;
 	}
 
-	new_bus->parent = &ofdev->dev;
-	dev_set_drvdata(&ofdev->dev, new_bus);
+	new_bus->parent = &pdev->dev;
+	dev_set_drvdata(&pdev->dev, new_bus);
 
 	if (of_device_is_compatible(np, "fsl,gianfar-mdio") ||
 			of_device_is_compatible(np, "fsl,gianfar-tbi") ||
@@ -348,8 +347,8 @@ static int fsl_pq_mdio_probe(struct platform_device *ofdev)
 
 	err = of_mdiobus_register(new_bus, np);
 	if (err) {
-		printk (KERN_ERR "%s: Cannot register as MDIO bus\n",
-				new_bus->name);
+		dev_err(&pdev->dev, "cannot register %s as MDIO bus\n",
+			new_bus->name);
 		goto err_free_irqs;
 	}
 
@@ -367,9 +366,9 @@ err_free_priv:
 }
 
 
-static int fsl_pq_mdio_remove(struct platform_device *ofdev)
+static int fsl_pq_mdio_remove(struct platform_device *pdev)
 {
-	struct device *device = &ofdev->dev;
+	struct device *device = &pdev->dev;
 	struct mii_bus *bus = dev_get_drvdata(device);
 	struct fsl_pq_mdio_priv *priv = bus->priv;
 
-- 
cgit v1.1


From afae5ad78b342f401c28b0bb1adb3cd494cb125a Mon Sep 17 00:00:00 2001
From: Timur Tabi <timur@freescale.com>
Date: Wed, 29 Aug 2012 08:08:01 +0000
Subject: net/fsl_pq_mdio: streamline probing of MDIO nodes

Make the device tree probe function more data-driven, so that it no longer
searches the 'compatible' property more than once.  The of_device_id[] array
allows for per-entry private data, so we use that to store details about each
type of node that the driver supports.  This removes the need to check the
'compatible' property inside the probe function.

The driver supports four types on MDIO devices:

1) Gianfar MDIO nodes that only map the MII registers
2) Gianfar MDIO nodes that map the full MDIO register set
3) eTSEC2 MDIO nodes (which map the full MDIO register set)
4) QE MDIO nodes (which map only the MII registers)

Gianfar, eTSEC2, and QE have different mappings for the TBIPA register, which
is needed to initialize the TBI PHY.  In addition, the QE needs a special
hack because of the way the device tree is ordered.

All of this information is encapsulated in the fsl_pq_mdio_data structure,
so when an MDIO node is probed, per-device data and functions are used
to determine how to initialize the device.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/freescale/fsl_pq_mdio.c | 373 ++++++++++++++++-----------
 1 file changed, 221 insertions(+), 152 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/freescale/fsl_pq_mdio.c b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
index 44f00a4..7eef1bb 100644
--- a/drivers/net/ethernet/freescale/fsl_pq_mdio.c
+++ b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
@@ -23,11 +23,10 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/module.h>
-#include <linux/platform_device.h>
 #include <linux/mii.h>
 #include <linux/of_address.h>
 #include <linux/of_mdio.h>
-#include <linux/of_platform.h>
+#include <linux/of_device.h>
 
 #include <asm/io.h>
 #include <asm/ucc.h>	/* for ucc_set_qe_mux_mii_mng() */
@@ -41,6 +40,15 @@
 
 #define MII_READ_COMMAND	0x00000001
 
+struct fsl_pq_mii {
+	u32 miimcfg;	/* MII management configuration reg */
+	u32 miimcom;	/* MII management command reg */
+	u32 miimadd;	/* MII management address reg */
+	u32 miimcon;	/* MII management control reg */
+	u32 miimstat;	/* MII management status reg */
+	u32 miimind;	/* MII management indication reg */
+};
+
 struct fsl_pq_mdio {
 	u8 res1[16];
 	u32 ieventm;	/* MDIO Interrupt event register (for etsec2)*/
@@ -48,12 +56,7 @@ struct fsl_pq_mdio {
 	u8 res2[4];
 	u32 emapm;	/* MDIO Event mapping register (for etsec2)*/
 	u8 res3[1280];
-	u32 miimcfg;	/* MII management configuration reg */
-	u32 miimcom;	/* MII management command reg */
-	u32 miimadd;	/* MII management address reg */
-	u32 miimcon;	/* MII management control reg */
-	u32 miimstat;	/* MII management status reg */
-	u32 miimind;	/* MII management indication reg */
+	struct fsl_pq_mii mii;
 	u8 res4[28];
 	u32 utbipar;	/* TBI phy address reg (only on UCC) */
 	u8 res5[2728];
@@ -64,7 +67,25 @@ struct fsl_pq_mdio {
 
 struct fsl_pq_mdio_priv {
 	void __iomem *map;
-	struct fsl_pq_mdio __iomem *regs;
+	struct fsl_pq_mii __iomem *regs;
+};
+
+/*
+ * Per-device-type data.  Each type of device tree node that we support gets
+ * one of these.
+ *
+ * @mii_offset: the offset of the MII registers within the memory map of the
+ * node.  Some nodes define only the MII registers, and some define the whole
+ * MAC (which includes the MII registers).
+ *
+ * @get_tbipa: determines the address of the TBIPA register
+ *
+ * @ucc_configure: a special function for extra QE configuration
+ */
+struct fsl_pq_mdio_data {
+	unsigned int mii_offset;	/* offset of the MII registers */
+	uint32_t __iomem * (*get_tbipa)(void __iomem *p);
+	void (*ucc_configure)(phys_addr_t start, phys_addr_t end);
 };
 
 /*
@@ -80,7 +101,7 @@ static int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
 		u16 value)
 {
 	struct fsl_pq_mdio_priv *priv = bus->priv;
-	struct fsl_pq_mdio __iomem *regs = priv->regs;
+	struct fsl_pq_mii __iomem *regs = priv->regs;
 	u32 status;
 
 	/* Set the PHY address and the register address we want to write */
@@ -109,7 +130,7 @@ static int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
 static int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
 {
 	struct fsl_pq_mdio_priv *priv = bus->priv;
-	struct fsl_pq_mdio __iomem *regs = priv->regs;
+	struct fsl_pq_mii __iomem *regs = priv->regs;
 	u32 status;
 	u16 value;
 
@@ -130,6 +151,7 @@ static int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
 	/* Grab the value of the register from miimstat */
 	value = in_be32(&regs->miimstat);
 
+	dev_dbg(&bus->dev, "read %04x from address %x/%x\n", value, mii_id, regnum);
 	return value;
 }
 
@@ -137,7 +159,7 @@ static int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
 static int fsl_pq_mdio_reset(struct mii_bus *bus)
 {
 	struct fsl_pq_mdio_priv *priv = bus->priv;
-	struct fsl_pq_mdio __iomem *regs = priv->regs;
+	struct fsl_pq_mii __iomem *regs = priv->regs;
 	u32 status;
 
 	mutex_lock(&bus->mdio_lock);
@@ -162,84 +184,181 @@ static int fsl_pq_mdio_reset(struct mii_bus *bus)
 	return 0;
 }
 
-static u32 __iomem *get_gfar_tbipa(struct fsl_pq_mdio __iomem *regs, struct device_node *np)
-{
 #if defined(CONFIG_GIANFAR) || defined(CONFIG_GIANFAR_MODULE)
-	struct gfar __iomem *enet_regs;
+/*
+ * This is mildly evil, but so is our hardware for doing this.
+ * Also, we have to cast back to struct gfar because of
+ * definition weirdness done in gianfar.h.
+ */
+static uint32_t __iomem *get_gfar_tbipa(void __iomem *p)
+{
+	struct gfar __iomem *enet_regs = p;
 
-	/*
-	 * This is mildly evil, but so is our hardware for doing this.
-	 * Also, we have to cast back to struct gfar because of
-	 * definition weirdness done in gianfar.h.
-	 */
-	if (of_device_is_compatible(np, "fsl,gianfar-mdio") ||
-		of_device_is_compatible(np, "fsl,gianfar-tbi") ||
-		of_device_is_compatible(np, "gianfar")) {
-		enet_regs = (struct gfar __iomem *)regs;
-		return &enet_regs->tbipa;
-	} else if (of_device_is_compatible(np, "fsl,etsec2-mdio") ||
-			of_device_is_compatible(np, "fsl,etsec2-tbi")) {
-		return of_iomap(np, 1);
-	}
-#endif
-	return NULL;
+	return &enet_regs->tbipa;
 }
 
-
-static int get_ucc_id_for_range(u64 start, u64 end, u32 *ucc_id)
+/*
+ * Return the TBIPAR address for an eTSEC2 node
+ */
+static uint32_t __iomem *get_etsec_tbipa(void __iomem *p)
 {
+	return p;
+}
+#endif
+
 #if defined(CONFIG_UCC_GETH) || defined(CONFIG_UCC_GETH_MODULE)
+/*
+ * Return the TBIPAR address for a QE MDIO node
+ */
+static uint32_t __iomem *get_ucc_tbipa(void __iomem *p)
+{
+	struct fsl_pq_mdio __iomem *mdio = p;
+
+	return &mdio->utbipar;
+}
+
+/*
+ * Find the UCC node that controls the given MDIO node
+ *
+ * For some reason, the QE MDIO nodes are not children of the UCC devices
+ * that control them.  Therefore, we need to scan all UCC nodes looking for
+ * the one that encompases the given MDIO node.  We do this by comparing
+ * physical addresses.  The 'start' and 'end' addresses of the MDIO node are
+ * passed, and the correct UCC node will cover the entire address range.
+ *
+ * This assumes that there is only one QE MDIO node in the entire device tree.
+ */
+static void ucc_configure(phys_addr_t start, phys_addr_t end)
+{
+	static bool found_mii_master;
 	struct device_node *np = NULL;
-	int err = 0;
 
-	for_each_compatible_node(np, NULL, "ucc_geth") {
-		struct resource tempres;
+	if (found_mii_master)
+		return;
 
-		err = of_address_to_resource(np, 0, &tempres);
-		if (err)
+	for_each_compatible_node(np, NULL, "ucc_geth") {
+		struct resource res;
+		const uint32_t *iprop;
+		uint32_t id;
+		int ret;
+
+		ret = of_address_to_resource(np, 0, &res);
+		if (ret < 0) {
+			pr_debug("fsl-pq-mdio: no address range in node %s\n",
+				 np->full_name);
 			continue;
+		}
 
 		/* if our mdio regs fall within this UCC regs range */
-		if ((start >= tempres.start) && (end <= tempres.end)) {
-			/* Find the id of the UCC */
-			const u32 *id;
-
-			id = of_get_property(np, "cell-index", NULL);
-			if (!id) {
-				id = of_get_property(np, "device-id", NULL);
-				if (!id)
-					continue;
+		if ((start < res.start) || (end > res.end))
+			continue;
+
+		iprop = of_get_property(np, "cell-index", NULL);
+		if (!iprop) {
+			iprop = of_get_property(np, "device-id", NULL);
+			if (!iprop) {
+				pr_debug("fsl-pq-mdio: no UCC ID in node %s\n",
+					 np->full_name);
+				continue;
 			}
+		}
 
-			*ucc_id = *id;
+		id = be32_to_cpup(iprop);
 
-			return 0;
+		/*
+		 * cell-index and device-id for QE nodes are
+		 * numbered from 1, not 0.
+		 */
+		if (ucc_set_qe_mux_mii_mng(id - 1) < 0) {
+			pr_debug("fsl-pq-mdio: invalid UCC ID in node %s\n",
+				 np->full_name);
+			continue;
 		}
+
+		pr_debug("fsl-pq-mdio: setting node UCC%u to MII master\n", id);
+		found_mii_master = true;
 	}
+}
 
-	if (err)
-		return err;
-	else
-		return -EINVAL;
-#else
-	return -ENODEV;
 #endif
-}
+
+static struct of_device_id fsl_pq_mdio_match[] = {
+#if defined(CONFIG_GIANFAR) || defined(CONFIG_GIANFAR_MODULE)
+	{
+		.compatible = "fsl,gianfar-tbi",
+		.data = &(struct fsl_pq_mdio_data) {
+			.mii_offset = 0,
+			.get_tbipa = get_gfar_tbipa,
+		},
+	},
+	{
+		.compatible = "fsl,gianfar-mdio",
+		.data = &(struct fsl_pq_mdio_data) {
+			.mii_offset = 0,
+			.get_tbipa = get_gfar_tbipa,
+		},
+	},
+	{
+		.type = "mdio",
+		.compatible = "gianfar",
+		.data = &(struct fsl_pq_mdio_data) {
+			.mii_offset = offsetof(struct fsl_pq_mdio, mii),
+			.get_tbipa = get_gfar_tbipa,
+		},
+	},
+	{
+		.compatible = "fsl,etsec2-tbi",
+		.data = &(struct fsl_pq_mdio_data) {
+			.mii_offset = offsetof(struct fsl_pq_mdio, mii),
+			.get_tbipa = get_etsec_tbipa,
+		},
+	},
+	{
+		.compatible = "fsl,etsec2-mdio",
+		.data = &(struct fsl_pq_mdio_data) {
+			.mii_offset = offsetof(struct fsl_pq_mdio, mii),
+			.get_tbipa = get_etsec_tbipa,
+		},
+	},
+#endif
+#if defined(CONFIG_UCC_GETH) || defined(CONFIG_UCC_GETH_MODULE)
+	{
+		.compatible = "fsl,ucc-mdio",
+		.data = &(struct fsl_pq_mdio_data) {
+			.mii_offset = 0,
+			.get_tbipa = get_ucc_tbipa,
+			.ucc_configure = ucc_configure,
+		},
+	},
+	{
+		/* Legacy UCC MDIO node */
+		.type = "mdio",
+		.compatible = "ucc_geth_phy",
+		.data = &(struct fsl_pq_mdio_data) {
+			.mii_offset = 0,
+			.get_tbipa = get_ucc_tbipa,
+			.ucc_configure = ucc_configure,
+		},
+	},
+#endif
+	{},
+};
+MODULE_DEVICE_TABLE(of, fsl_pq_mdio_match);
 
 static int fsl_pq_mdio_probe(struct platform_device *pdev)
 {
+	const struct of_device_id *id =
+		of_match_device(fsl_pq_mdio_match, &pdev->dev);
+	const struct fsl_pq_mdio_data *data = id->data;
 	struct device_node *np = pdev->dev.of_node;
+	struct resource res;
 	struct device_node *tbi;
 	struct fsl_pq_mdio_priv *priv;
-	struct fsl_pq_mdio __iomem *regs = NULL;
-	void __iomem *map;
-	u32 __iomem *tbipa;
 	struct mii_bus *new_bus;
-	int tbiaddr = -1;
-	const u32 *addrp;
-	u64 addr = 0, size = 0;
 	int err;
 
+	dev_dbg(&pdev->dev, "found %s compatible node\n", id->compatible);
+
 	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
@@ -256,39 +375,35 @@ static int fsl_pq_mdio_probe(struct platform_device *pdev)
 	new_bus->reset = &fsl_pq_mdio_reset;
 	new_bus->priv = priv;
 
-	addrp = of_get_address(np, 0, &size, NULL);
-	if (!addrp) {
-		err = -EINVAL;
-		goto err_free_bus;
-	}
-
-	/* Set the PHY base address */
-	addr = of_translate_address(np, addrp);
-	if (addr == OF_BAD_ADDR) {
-		err = -EINVAL;
+	err = of_address_to_resource(np, 0, &res);
+	if (err < 0) {
+		dev_err(&pdev->dev, "could not obtain address information\n");
 		goto err_free_bus;
 	}
 
 	snprintf(new_bus->id, MII_BUS_ID_SIZE, "%s@%llx", np->name,
-		(unsigned long long)addr);
+		(unsigned long long)res.start);
 
-	map = ioremap(addr, size);
-	if (!map) {
+	priv->map = of_iomap(np, 0);
+	if (!priv->map) {
 		err = -ENOMEM;
 		goto err_free_bus;
 	}
-	priv->map = map;
 
-	if (of_device_is_compatible(np, "fsl,gianfar-mdio") ||
-			of_device_is_compatible(np, "fsl,gianfar-tbi") ||
-			of_device_is_compatible(np, "fsl,ucc-mdio") ||
-			of_device_is_compatible(np, "ucc_geth_phy"))
-		map -= offsetof(struct fsl_pq_mdio, miimcfg);
-	regs = map;
-	priv->regs = regs;
+	/*
+	 * Some device tree nodes represent only the MII registers, and
+	 * others represent the MAC and MII registers.  The 'mii_offset' field
+	 * contains the offset of the MII registers inside the mapped register
+	 * space.
+	 */
+	if (data->mii_offset > resource_size(&res)) {
+		dev_err(&pdev->dev, "invalid register map\n");
+		err = -EINVAL;
+		goto err_unmap_regs;
+	}
+	priv->regs = priv->map + data->mii_offset;
 
 	new_bus->irq = kcalloc(PHY_MAX_ADDR, sizeof(int), GFP_KERNEL);
-
 	if (NULL == new_bus->irq) {
 		err = -ENOMEM;
 		goto err_unmap_regs;
@@ -297,54 +412,36 @@ static int fsl_pq_mdio_probe(struct platform_device *pdev)
 	new_bus->parent = &pdev->dev;
 	dev_set_drvdata(&pdev->dev, new_bus);
 
-	if (of_device_is_compatible(np, "fsl,gianfar-mdio") ||
-			of_device_is_compatible(np, "fsl,gianfar-tbi") ||
-			of_device_is_compatible(np, "fsl,etsec2-mdio") ||
-			of_device_is_compatible(np, "fsl,etsec2-tbi") ||
-			of_device_is_compatible(np, "gianfar")) {
-		tbipa = get_gfar_tbipa(regs, np);
-		if (!tbipa) {
-			err = -EINVAL;
-			goto err_free_irqs;
-		}
-	} else if (of_device_is_compatible(np, "fsl,ucc-mdio") ||
-			of_device_is_compatible(np, "ucc_geth_phy")) {
-		u32 id;
-		static u32 mii_mng_master;
-
-		tbipa = &regs->utbipar;
-
-		if ((err = get_ucc_id_for_range(addr, addr + size, &id)))
-			goto err_free_irqs;
-
-		if (!mii_mng_master) {
-			mii_mng_master = id;
-			ucc_set_qe_mux_mii_mng(id - 1);
+	if (data->get_tbipa) {
+		for_each_child_of_node(np, tbi) {
+			if (strcmp(tbi->type, "tbi-phy") == 0) {
+				dev_dbg(&pdev->dev, "found TBI PHY node %s\n",
+					strrchr(tbi->full_name, '/') + 1);
+				break;
+			}
 		}
-	} else {
-		err = -ENODEV;
-		goto err_free_irqs;
-	}
 
-	for_each_child_of_node(np, tbi) {
-		if (!strncmp(tbi->type, "tbi-phy", 8))
-			break;
-	}
+		if (tbi) {
+			const u32 *prop = of_get_property(tbi, "reg", NULL);
+			uint32_t __iomem *tbipa;
 
-	if (tbi) {
-		const u32 *prop = of_get_property(tbi, "reg", NULL);
+			if (!prop) {
+				dev_err(&pdev->dev,
+					"missing 'reg' property in node %s\n",
+					tbi->full_name);
+				err = -EBUSY;
+				goto error;
+			}
 
-		if (prop)
-			tbiaddr = *prop;
+			tbipa = data->get_tbipa(priv->map);
 
-		if (tbiaddr == -1) {
-			err = -EBUSY;
-			goto err_free_irqs;
-		} else {
-			out_be32(tbipa, tbiaddr);
+			out_be32(tbipa, be32_to_cpup(prop));
 		}
 	}
 
+	if (data->ucc_configure)
+		data->ucc_configure(res.start, res.end);
+
 	err = of_mdiobus_register(new_bus, np);
 	if (err) {
 		dev_err(&pdev->dev, "cannot register %s as MDIO bus\n",
@@ -384,34 +481,6 @@ static int fsl_pq_mdio_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct of_device_id fsl_pq_mdio_match[] = {
-	{
-		.type = "mdio",
-		.compatible = "ucc_geth_phy",
-	},
-	{
-		.type = "mdio",
-		.compatible = "gianfar",
-	},
-	{
-		.compatible = "fsl,ucc-mdio",
-	},
-	{
-		.compatible = "fsl,gianfar-tbi",
-	},
-	{
-		.compatible = "fsl,gianfar-mdio",
-	},
-	{
-		.compatible = "fsl,etsec2-tbi",
-	},
-	{
-		.compatible = "fsl,etsec2-mdio",
-	},
-	{},
-};
-MODULE_DEVICE_TABLE(of, fsl_pq_mdio_match);
-
 static struct platform_driver fsl_pq_mdio_driver = {
 	.driver = {
 		.name = "fsl-pq_mdio",
-- 
cgit v1.1


From dd3b8a32e66cc3274a27338335337a5b65611ea5 Mon Sep 17 00:00:00 2001
From: Timur Tabi <timur@freescale.com>
Date: Wed, 29 Aug 2012 08:08:02 +0000
Subject: net/fsl-pq-mdio: coalesce multiple memory allocations into one

Take advantage of the new mdiobus_alloc_size() function to combine three
different memory allocations into one.  This also simplies the error
handling.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/freescale/fsl_pq_mdio.c | 42 ++++++++++------------------
 1 file changed, 14 insertions(+), 28 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/freescale/fsl_pq_mdio.c b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
index 7eef1bb..ebd4638 100644
--- a/drivers/net/ethernet/freescale/fsl_pq_mdio.c
+++ b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
@@ -68,6 +68,7 @@ struct fsl_pq_mdio {
 struct fsl_pq_mdio_priv {
 	void __iomem *map;
 	struct fsl_pq_mii __iomem *regs;
+	int irqs[PHY_MAX_ADDR];
 };
 
 /*
@@ -359,26 +360,21 @@ static int fsl_pq_mdio_probe(struct platform_device *pdev)
 
 	dev_dbg(&pdev->dev, "found %s compatible node\n", id->compatible);
 
-	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
-	if (!priv)
+	new_bus = mdiobus_alloc_size(sizeof(*priv));
+	if (!new_bus)
 		return -ENOMEM;
 
-	new_bus = mdiobus_alloc();
-	if (!new_bus) {
-		err = -ENOMEM;
-		goto err_free_priv;
-	}
-
+	priv = new_bus->priv;
 	new_bus->name = "Freescale PowerQUICC MII Bus",
 	new_bus->read = &fsl_pq_mdio_read;
 	new_bus->write = &fsl_pq_mdio_write;
 	new_bus->reset = &fsl_pq_mdio_reset;
-	new_bus->priv = priv;
+	new_bus->irq = priv->irqs;
 
 	err = of_address_to_resource(np, 0, &res);
 	if (err < 0) {
 		dev_err(&pdev->dev, "could not obtain address information\n");
-		goto err_free_bus;
+		goto error;
 	}
 
 	snprintf(new_bus->id, MII_BUS_ID_SIZE, "%s@%llx", np->name,
@@ -387,7 +383,7 @@ static int fsl_pq_mdio_probe(struct platform_device *pdev)
 	priv->map = of_iomap(np, 0);
 	if (!priv->map) {
 		err = -ENOMEM;
-		goto err_free_bus;
+		goto error;
 	}
 
 	/*
@@ -399,16 +395,10 @@ static int fsl_pq_mdio_probe(struct platform_device *pdev)
 	if (data->mii_offset > resource_size(&res)) {
 		dev_err(&pdev->dev, "invalid register map\n");
 		err = -EINVAL;
-		goto err_unmap_regs;
+		goto error;
 	}
 	priv->regs = priv->map + data->mii_offset;
 
-	new_bus->irq = kcalloc(PHY_MAX_ADDR, sizeof(int), GFP_KERNEL);
-	if (NULL == new_bus->irq) {
-		err = -ENOMEM;
-		goto err_unmap_regs;
-	}
-
 	new_bus->parent = &pdev->dev;
 	dev_set_drvdata(&pdev->dev, new_bus);
 
@@ -446,19 +436,17 @@ static int fsl_pq_mdio_probe(struct platform_device *pdev)
 	if (err) {
 		dev_err(&pdev->dev, "cannot register %s as MDIO bus\n",
 			new_bus->name);
-		goto err_free_irqs;
+		goto error;
 	}
 
 	return 0;
 
-err_free_irqs:
-	kfree(new_bus->irq);
-err_unmap_regs:
-	iounmap(priv->map);
-err_free_bus:
+error:
+	if (priv->map)
+		iounmap(priv->map);
+
 	kfree(new_bus);
-err_free_priv:
-	kfree(priv);
+
 	return err;
 }
 
@@ -474,9 +462,7 @@ static int fsl_pq_mdio_remove(struct platform_device *pdev)
 	dev_set_drvdata(device, NULL);
 
 	iounmap(priv->map);
-	bus->priv = NULL;
 	mdiobus_free(bus);
-	kfree(priv);
 
 	return 0;
 }
-- 
cgit v1.1


From 761743ebc92df72053e736fce953a5d2e90099d5 Mon Sep 17 00:00:00 2001
From: Timur Tabi <timur@freescale.com>
Date: Wed, 29 Aug 2012 08:08:03 +0000
Subject: net/fsl_pq_mdio: add support for the Fman 1G MDIO controller

The MDIO controller on the Frame Manager (Fman) is compatible with the
QE and Gianfar MDIO controllers, but we don't care about the TBI because
the Ethernet drivers (FMD) take care of programming it.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/freescale/fsl_pq_mdio.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/freescale/fsl_pq_mdio.c b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
index ebd4638..c93a056 100644
--- a/drivers/net/ethernet/freescale/fsl_pq_mdio.c
+++ b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
@@ -342,6 +342,15 @@ static struct of_device_id fsl_pq_mdio_match[] = {
 		},
 	},
 #endif
+	/* No Kconfig option for Fman support yet */
+	{
+		.compatible = "fsl,fman-mdio",
+		.data = &(struct fsl_pq_mdio_data) {
+			.mii_offset = 0,
+			/* Fman TBI operations are handled elsewhere */
+		},
+	},
+
 	{},
 };
 MODULE_DEVICE_TABLE(of, fsl_pq_mdio_match);
-- 
cgit v1.1


From 26614ba5445fe31a69068a5e94266fa08b4ee345 Mon Sep 17 00:00:00 2001
From: Merav Sicron <meravs@broadcom.com>
Date: Mon, 27 Aug 2012 03:26:19 +0000
Subject: bnx2x: Move netif_napi_add to the open call

Move netif_napi_add for all queues from the probe call to the open call, to
avoid the case that napi objects are added for queues that may eventually not
be initialized and activated. With the former behavior, the driver could crash
when netpoll was calling ndo_poll_controller.

Signed-off-by: Merav Sicron <meravs@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x.h         |  3 ---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c     |  4 ++++
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h     |  4 ++--
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c |  2 --
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c    | 10 ++++------
 5 files changed, 10 insertions(+), 13 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
index 463b9ec..6d1a24a 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
@@ -1708,9 +1708,6 @@ struct bnx2x_func_init_params {
 			continue;		\
 		else
 
-#define for_each_napi_rx_queue(bp, var) \
-	for ((var) = 0; (var) < bp->num_napi_queues; (var)++)
-
 /* Skip OOO FP */
 #define for_each_tx_queue(bp, var) \
 	for ((var) = 0; (var) < BNX2X_NUM_QUEUES(bp); (var)++) \
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index e879e19..af20c6e 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -2046,6 +2046,8 @@ int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
 	 */
 	bnx2x_setup_tc(bp->dev, bp->max_cos);
 
+	/* Add all NAPI objects */
+	bnx2x_add_all_napi(bp);
 	bnx2x_napi_enable(bp);
 
 	/* set pf load just before approaching the MCP */
@@ -2408,6 +2410,8 @@ int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
 
 		/* Disable HW interrupts, NAPI */
 		bnx2x_netif_stop(bp, 1);
+		/* Delete all NAPI objects */
+		bnx2x_del_all_napi(bp);
 
 		/* Release IRQs */
 		bnx2x_free_irq(bp);
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
index dfa757e..21b5532 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
@@ -792,7 +792,7 @@ static inline void bnx2x_add_all_napi(struct bnx2x *bp)
 	bp->num_napi_queues = bp->num_queues;
 
 	/* Add NAPI objects */
-	for_each_napi_rx_queue(bp, i)
+	for_each_rx_queue(bp, i)
 		netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi),
 			       bnx2x_poll, BNX2X_NAPI_WEIGHT);
 }
@@ -801,7 +801,7 @@ static inline void bnx2x_del_all_napi(struct bnx2x *bp)
 {
 	int i;
 
-	for_each_napi_rx_queue(bp, i)
+	for_each_rx_queue(bp, i)
 		netif_napi_del(&bnx2x_fp(bp, i, napi));
 }
 
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
index fc4e0e3..c37a68d 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
@@ -2888,11 +2888,9 @@ static void bnx2x_get_channels(struct net_device *dev,
  */
 static void bnx2x_change_num_queues(struct bnx2x *bp, int num_rss)
 {
-	bnx2x_del_all_napi(bp);
 	bnx2x_disable_msi(bp);
 	BNX2X_NUM_QUEUES(bp) = num_rss + NON_ETH_CONTEXT_USE;
 	bnx2x_set_int_mode(bp);
-	bnx2x_add_all_napi(bp);
 }
 
 /**
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index 02b5a34..5b42275 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -8427,6 +8427,8 @@ unload_error:
 
 	/* Disable HW interrupts, NAPI */
 	bnx2x_netif_stop(bp, 1);
+	/* Delete all NAPI objects */
+	bnx2x_del_all_napi(bp);
 
 	/* Release IRQs */
 	bnx2x_free_irq(bp);
@@ -11899,9 +11901,6 @@ static int __devinit bnx2x_init_one(struct pci_dev *pdev,
 	 */
 	bnx2x_set_int_mode(bp);
 
-	/* Add all NAPI objects */
-	bnx2x_add_all_napi(bp);
-
 	rc = register_netdev(dev);
 	if (rc) {
 		dev_err(&pdev->dev, "Cannot register net device\n");
@@ -11976,9 +11975,6 @@ static void __devexit bnx2x_remove_one(struct pci_dev *pdev)
 
 	unregister_netdev(dev);
 
-	/* Delete all NAPI objects */
-	bnx2x_del_all_napi(bp);
-
 	/* Power on: we can't let PCI layer write to us while we are in D3 */
 	bnx2x_set_power_state(bp, PCI_D0);
 
@@ -12025,6 +12021,8 @@ static int bnx2x_eeh_nic_unload(struct bnx2x *bp)
 	bnx2x_tx_disable(bp);
 
 	bnx2x_netif_stop(bp, 0);
+	/* Delete all NAPI objects */
+	bnx2x_del_all_napi(bp);
 
 	del_timer_sync(&bp->timer);
 
-- 
cgit v1.1


From 14a15d618743ebc4936fe03073bf0c75024d3a07 Mon Sep 17 00:00:00 2001
From: Merav Sicron <meravs@broadcom.com>
Date: Mon, 27 Aug 2012 03:26:20 +0000
Subject: bnx2x: Correct the ndo_poll_controller call

This patch correct poll_bnx2x (ndo_poll_controller call) which was not
functioning well with MSI-X.

Signed-off-by: Merav Sicron <meravs@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index 5b42275..2105498 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -11231,10 +11231,12 @@ static int bnx2x_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 static void poll_bnx2x(struct net_device *dev)
 {
 	struct bnx2x *bp = netdev_priv(dev);
+	int i;
 
-	disable_irq(bp->pdev->irq);
-	bnx2x_interrupt(bp->pdev->irq, dev);
-	enable_irq(bp->pdev->irq);
+	for_each_eth_queue(bp, i) {
+		struct bnx2x_fastpath *fp = &bp->fp[i];
+		napi_schedule(&bnx2x_fp(bp, fp->index, napi));
+	}
 }
 #endif
 
-- 
cgit v1.1


From efc38d2af55d80b4420dab71f6634ad7aa34a38c Mon Sep 17 00:00:00 2001
From: Bruce Allan <bruce.w.allan@intel.com>
Date: Fri, 17 Aug 2012 06:17:51 +0000
Subject: e1000e: use correct type for read of 32-bit register

The POEMB register is 32 bits, not 16.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/e1000e/82571.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c
index 080c890..c985864 100644
--- a/drivers/net/ethernet/intel/e1000e/82571.c
+++ b/drivers/net/ethernet/intel/e1000e/82571.c
@@ -653,7 +653,7 @@ static void e1000_put_hw_semaphore_82574(struct e1000_hw *hw)
  **/
 static s32 e1000_set_d0_lplu_state_82574(struct e1000_hw *hw, bool active)
 {
-	u16 data = er32(POEMB);
+	u32 data = er32(POEMB);
 
 	if (active)
 		data |= E1000_PHY_CTRL_D0A_LPLU;
@@ -677,7 +677,7 @@ static s32 e1000_set_d0_lplu_state_82574(struct e1000_hw *hw, bool active)
  **/
 static s32 e1000_set_d3_lplu_state_82574(struct e1000_hw *hw, bool active)
 {
-	u16 data = er32(POEMB);
+	u32 data = er32(POEMB);
 
 	if (!active) {
 		data &= ~E1000_PHY_CTRL_NOND0A_LPLU;
-- 
cgit v1.1


From bc76329d4a788b1c5f2de7208b2fae4e9204223c Mon Sep 17 00:00:00 2001
From: Bruce Allan <bruce.w.allan@intel.com>
Date: Fri, 17 Aug 2012 06:18:07 +0000
Subject: e1000e: cleanup strict checkpatch MEMORY_BARRIER checks

Add comments to memory barriers per strict checkpatch.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/e1000e/netdev.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 46c3b1f..fb6c813 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -3746,6 +3746,10 @@ static irqreturn_t e1000_intr_msi_test(int irq, void *data)
 	e_dbg("icr is %08X\n", icr);
 	if (icr & E1000_ICR_RXSEQ) {
 		adapter->flags &= ~FLAG_MSI_TEST_FAILED;
+		/*
+		 * Force memory writes to complete before acknowledging the
+		 * interrupt is handled.
+		 */
 		wmb();
 	}
 
@@ -3787,6 +3791,10 @@ static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
 		goto msi_test_failed;
 	}
 
+	/*
+	 * Force memory writes to complete before enabling and firing an
+	 * interrupt.
+	 */
 	wmb();
 
 	e1000_irq_enable(adapter);
@@ -3798,7 +3806,7 @@ static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
 
 	e1000_irq_disable(adapter);
 
-	rmb();
+	rmb();			/* read flags after interrupt has been fired */
 
 	if (adapter->flags & FLAG_MSI_TEST_FAILED) {
 		adapter->int_mode = E1000E_INT_MODE_LEGACY;
-- 
cgit v1.1


From 06a402ef51b374f2308b0a6c790b301311df786f Mon Sep 17 00:00:00 2001
From: Bruce Allan <bruce.w.allan@intel.com>
Date: Fri, 17 Aug 2012 06:17:57 +0000
Subject: e1000e: cleanup strict checkpatch check

CHECK: multiple assignments should be avoided

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/e1000e/ethtool.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/intel/e1000e/ethtool.c b/drivers/net/ethernet/intel/e1000e/ethtool.c
index 2e76f06..c11ac27 100644
--- a/drivers/net/ethernet/intel/e1000e/ethtool.c
+++ b/drivers/net/ethernet/intel/e1000e/ethtool.c
@@ -1942,7 +1942,8 @@ static int e1000_set_coalesce(struct net_device *netdev,
 		return -EINVAL;
 
 	if (ec->rx_coalesce_usecs == 4) {
-		adapter->itr = adapter->itr_setting = 4;
+		adapter->itr_setting = 4;
+		adapter->itr = adapter->itr_setting;
 	} else if (ec->rx_coalesce_usecs <= 3) {
 		adapter->itr = 20000;
 		adapter->itr_setting = ec->rx_coalesce_usecs;
-- 
cgit v1.1


From 419e551caa9e9689aa2f68a8897f9eaf44958eb3 Mon Sep 17 00:00:00 2001
From: Bruce Allan <bruce.w.allan@intel.com>
Date: Fri, 17 Aug 2012 06:18:02 +0000
Subject: e1000e: cleanup - remove inapplicable comment

Early Receive has been disabled in the driver so this comment is no longer
applicable.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/e1000e/netdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index fb6c813..c35d354 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -3446,7 +3446,7 @@ void e1000e_reset(struct e1000_adapter *adapter)
 
 			/*
 			 * if short on Rx space, Rx wins and must trump Tx
-			 * adjustment or use Early Receive if available
+			 * adjustment
 			 */
 			if (pba < min_rx_space)
 				pba = min_rx_space;
-- 
cgit v1.1


From 70443ae9d07f1c1de2431327814b2594b86a99bb Mon Sep 17 00:00:00 2001
From: Bruce Allan <bruce.w.allan@intel.com>
Date: Fri, 17 Aug 2012 06:18:13 +0000
Subject: e1000e: cleanup - remove unnecessary variable

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/e1000e/netdev.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index c35d354..c0815ce 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -4669,7 +4669,7 @@ static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb)
 	struct e1000_buffer *buffer_info;
 	unsigned int i;
 	u32 cmd_length = 0;
-	u16 ipcse = 0, tucse, mss;
+	u16 ipcse = 0, mss;
 	u8 ipcss, ipcso, tucss, tucso, hdr_len;
 
 	if (!skb_is_gso(skb))
@@ -4703,7 +4703,6 @@ static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb)
 	ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
 	tucss = skb_transport_offset(skb);
 	tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
-	tucse = 0;
 
 	cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
 	               E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
@@ -4717,7 +4716,7 @@ static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb)
 	context_desc->lower_setup.ip_fields.ipcse  = cpu_to_le16(ipcse);
 	context_desc->upper_setup.tcp_fields.tucss = tucss;
 	context_desc->upper_setup.tcp_fields.tucso = tucso;
-	context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
+	context_desc->upper_setup.tcp_fields.tucse = 0;
 	context_desc->tcp_seg_setup.fields.mss     = cpu_to_le16(mss);
 	context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
 	context_desc->cmd_and_length = cpu_to_le32(cmd_length);
-- 
cgit v1.1


From 076d807024052a2c0d76050edd89cd94d0515684 Mon Sep 17 00:00:00 2001
From: Bruce Allan <bruce.w.allan@intel.com>
Date: Fri, 17 Aug 2012 06:18:23 +0000
Subject: e1000e: update driver version number

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/e1000e/netdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index c0815ce..095a6be 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -56,7 +56,7 @@
 
 #define DRV_EXTRAVERSION "-k"
 
-#define DRV_VERSION "2.0.0" DRV_EXTRAVERSION
+#define DRV_VERSION "2.1.4" DRV_EXTRAVERSION
 char e1000e_driver_name[] = "e1000e";
 const char e1000e_driver_version[] = DRV_VERSION;
 
-- 
cgit v1.1


From 0ac1e8cee674d492d336355b99bf63c906f0a2e4 Mon Sep 17 00:00:00 2001
From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Fri, 11 May 2012 08:33:26 +0000
Subject: ixgbevf: Add suspend and resume support to the VF

This change adds PCI suspend and resume support to ixgbevf.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 93 ++++++++++++++++++++++-
 1 file changed, 89 insertions(+), 4 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 60ef645..87f87d8 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -1867,6 +1867,22 @@ err_set_interrupt:
 }
 
 /**
+ * ixgbevf_clear_interrupt_scheme - Clear the current interrupt scheme settings
+ * @adapter: board private structure to clear interrupt scheme on
+ *
+ * We go through and clear interrupt specific resources and reset the structure
+ * to pre-load conditions
+ **/
+static void ixgbevf_clear_interrupt_scheme(struct ixgbevf_adapter *adapter)
+{
+	adapter->num_tx_queues = 0;
+	adapter->num_rx_queues = 0;
+
+	ixgbevf_free_q_vectors(adapter);
+	ixgbevf_reset_interrupt_capability(adapter);
+}
+
+/**
  * ixgbevf_sw_init - Initialize general software structures
  * (struct ixgbevf_adapter)
  * @adapter: board private structure to initialize
@@ -2889,23 +2905,85 @@ static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu)
 	return 0;
 }
 
-static void ixgbevf_shutdown(struct pci_dev *pdev)
+static int ixgbevf_suspend(struct pci_dev *pdev, pm_message_t state)
 {
 	struct net_device *netdev = pci_get_drvdata(pdev);
 	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
+#ifdef CONFIG_PM
+	int retval = 0;
+#endif
 
 	netif_device_detach(netdev);
 
 	if (netif_running(netdev)) {
+		rtnl_lock();
 		ixgbevf_down(adapter);
 		ixgbevf_free_irq(adapter);
 		ixgbevf_free_all_tx_resources(adapter);
 		ixgbevf_free_all_rx_resources(adapter);
+		rtnl_unlock();
 	}
 
-	pci_save_state(pdev);
+	ixgbevf_clear_interrupt_scheme(adapter);
+
+#ifdef CONFIG_PM
+	retval = pci_save_state(pdev);
+	if (retval)
+		return retval;
 
+#endif
 	pci_disable_device(pdev);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int ixgbevf_resume(struct pci_dev *pdev)
+{
+	struct ixgbevf_adapter *adapter = pci_get_drvdata(pdev);
+	struct net_device *netdev = adapter->netdev;
+	u32 err;
+
+	pci_set_power_state(pdev, PCI_D0);
+	pci_restore_state(pdev);
+	/*
+	 * pci_restore_state clears dev->state_saved so call
+	 * pci_save_state to restore it.
+	 */
+	pci_save_state(pdev);
+
+	err = pci_enable_device_mem(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
+		return err;
+	}
+	pci_set_master(pdev);
+
+	rtnl_lock();
+	err = ixgbevf_init_interrupt_scheme(adapter);
+	rtnl_unlock();
+	if (err) {
+		dev_err(&pdev->dev, "Cannot initialize interrupts\n");
+		return err;
+	}
+
+	ixgbevf_reset(adapter);
+
+	if (netif_running(netdev)) {
+		err = ixgbevf_open(netdev);
+		if (err)
+			return err;
+	}
+
+	netif_device_attach(netdev);
+
+	return err;
+}
+
+#endif /* CONFIG_PM */
+static void ixgbevf_shutdown(struct pci_dev *pdev)
+{
+	ixgbevf_suspend(pdev, PMSG_SUSPEND);
 }
 
 static struct rtnl_link_stats64 *ixgbevf_get_stats(struct net_device *netdev,
@@ -2946,7 +3024,7 @@ static struct rtnl_link_stats64 *ixgbevf_get_stats(struct net_device *netdev,
 	return stats;
 }
 
-static const struct net_device_ops ixgbe_netdev_ops = {
+static const struct net_device_ops ixgbevf_netdev_ops = {
 	.ndo_open		= ixgbevf_open,
 	.ndo_stop		= ixgbevf_close,
 	.ndo_start_xmit		= ixgbevf_xmit_frame,
@@ -2962,7 +3040,7 @@ static const struct net_device_ops ixgbe_netdev_ops = {
 
 static void ixgbevf_assign_netdev_ops(struct net_device *dev)
 {
-	dev->netdev_ops = &ixgbe_netdev_ops;
+	dev->netdev_ops = &ixgbevf_netdev_ops;
 	ixgbevf_set_ethtool_ops(dev);
 	dev->watchdog_timeo = 5 * HZ;
 }
@@ -3131,6 +3209,7 @@ static int __devinit ixgbevf_probe(struct pci_dev *pdev,
 	return 0;
 
 err_register:
+	ixgbevf_clear_interrupt_scheme(adapter);
 err_sw_init:
 	ixgbevf_reset_interrupt_capability(adapter);
 	iounmap(hw->hw_addr);
@@ -3168,6 +3247,7 @@ static void __devexit ixgbevf_remove(struct pci_dev *pdev)
 	if (netdev->reg_state == NETREG_REGISTERED)
 		unregister_netdev(netdev);
 
+	ixgbevf_clear_interrupt_scheme(adapter);
 	ixgbevf_reset_interrupt_capability(adapter);
 
 	iounmap(adapter->hw.hw_addr);
@@ -3267,6 +3347,11 @@ static struct pci_driver ixgbevf_driver = {
 	.id_table = ixgbevf_pci_tbl,
 	.probe    = ixgbevf_probe,
 	.remove   = __devexit_p(ixgbevf_remove),
+#ifdef CONFIG_PM
+	/* Power Management Hooks */
+	.suspend  = ixgbevf_suspend,
+	.resume   = ixgbevf_resume,
+#endif
 	.shutdown = ixgbevf_shutdown,
 	.err_handler = &ixgbevf_err_handler
 };
-- 
cgit v1.1


From dd1fe113e7532c7513ff03f832312d81628a23ff Mon Sep 17 00:00:00 2001
From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Fri, 20 Jul 2012 08:09:48 +0000
Subject: ixgbevf: Cleanup handling of configuration for jumbo frames

This change moves the code for notifying the PF of the VF maximum packet
size into the vf.c file.  The main motivation behind this is that the vf.c
file is supposed to contain all of the messages used when communicating
with the PF.

In addition it creates a separate function for setting the Rx buffer size
so that we have on centralized area to review what buffer sizes will be
requested by the VF.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |  4 +-
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 67 ++++++++++++++---------
 drivers/net/ethernet/intel/ixgbevf/vf.c           | 14 +++++
 drivers/net/ethernet/intel/ixgbevf/vf.h           |  1 +
 4 files changed, 58 insertions(+), 28 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
index 98cadb0..eb26fda 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
@@ -101,7 +101,9 @@ struct ixgbevf_ring {
 
 /* Supported Rx Buffer Sizes */
 #define IXGBEVF_RXBUFFER_256   256    /* Used for packet split */
-#define IXGBEVF_RXBUFFER_2048  2048
+#define IXGBEVF_RXBUFFER_3K    3072
+#define IXGBEVF_RXBUFFER_7K    7168
+#define IXGBEVF_RXBUFFER_15K   15360
 #define IXGBEVF_MAX_RXBUFFER   16384  /* largest size for single descriptor */
 
 #define IXGBEVF_RX_HDR_SIZE IXGBEVF_RXBUFFER_256
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 87f87d8..a5d9cc5 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -1057,15 +1057,46 @@ static void ixgbevf_configure_srrctl(struct ixgbevf_adapter *adapter, int index)
 
 	srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
 
-	if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE)
-		srrctl |= IXGBEVF_RXBUFFER_2048 >>
-			IXGBE_SRRCTL_BSIZEPKT_SHIFT;
-	else
-		srrctl |= rx_ring->rx_buf_len >>
-			IXGBE_SRRCTL_BSIZEPKT_SHIFT;
+	srrctl |= ALIGN(rx_ring->rx_buf_len, 1024) >>
+		  IXGBE_SRRCTL_BSIZEPKT_SHIFT;
+
 	IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(index), srrctl);
 }
 
+static void ixgbevf_set_rx_buffer_len(struct ixgbevf_adapter *adapter)
+{
+	struct ixgbe_hw *hw = &adapter->hw;
+	struct net_device *netdev = adapter->netdev;
+	int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
+	int i;
+	u16 rx_buf_len;
+
+	/* notify the PF of our intent to use this size of frame */
+	ixgbevf_rlpml_set_vf(hw, max_frame);
+
+	/* PF will allow an extra 4 bytes past for vlan tagged frames */
+	max_frame += VLAN_HLEN;
+
+	/*
+	 * Make best use of allocation by using all but 1K of a
+	 * power of 2 allocation that will be used for skb->head.
+	 */
+	if ((hw->mac.type == ixgbe_mac_X540_vf) &&
+	    (max_frame <= MAXIMUM_ETHERNET_VLAN_SIZE))
+		rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
+	else if (max_frame <= IXGBEVF_RXBUFFER_3K)
+		rx_buf_len = IXGBEVF_RXBUFFER_3K;
+	else if (max_frame <= IXGBEVF_RXBUFFER_7K)
+		rx_buf_len = IXGBEVF_RXBUFFER_7K;
+	else if (max_frame <= IXGBEVF_RXBUFFER_15K)
+		rx_buf_len = IXGBEVF_RXBUFFER_15K;
+	else
+		rx_buf_len = IXGBEVF_MAX_RXBUFFER;
+
+	for (i = 0; i < adapter->num_rx_queues; i++)
+		adapter->rx_ring[i].rx_buf_len = rx_buf_len;
+}
+
 /**
  * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset
  * @adapter: board private structure
@@ -1076,18 +1107,14 @@ static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter)
 {
 	u64 rdba;
 	struct ixgbe_hw *hw = &adapter->hw;
-	struct net_device *netdev = adapter->netdev;
-	int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
 	int i, j;
 	u32 rdlen;
-	int rx_buf_len;
 
 	/* PSRTYPE must be initialized in 82599 */
 	IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
-	if (netdev->mtu <= ETH_DATA_LEN)
-		rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
-	else
-		rx_buf_len = ALIGN(max_frame, 1024);
+
+	/* set_rx_buffer_len must be called before ring initialization */
+	ixgbevf_set_rx_buffer_len(adapter);
 
 	rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc);
 	/* Setup the HW Rx Head and Tail Descriptor Pointers and
@@ -1103,7 +1130,6 @@ static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter)
 		IXGBE_WRITE_REG(hw, IXGBE_VFRDT(j), 0);
 		adapter->rx_ring[i].head = IXGBE_VFRDH(j);
 		adapter->rx_ring[i].tail = IXGBE_VFRDT(j);
-		adapter->rx_ring[i].rx_buf_len = rx_buf_len;
 
 		ixgbevf_configure_srrctl(adapter, j);
 	}
@@ -1315,7 +1341,6 @@ static void ixgbevf_up_complete(struct ixgbevf_adapter *adapter)
 	int i, j = 0;
 	int num_rx_rings = adapter->num_rx_queues;
 	u32 txdctl, rxdctl;
-	u32 msg[2];
 
 	for (i = 0; i < adapter->num_tx_queues; i++) {
 		j = adapter->tx_ring[i].reg_idx;
@@ -1356,10 +1381,6 @@ static void ixgbevf_up_complete(struct ixgbevf_adapter *adapter)
 			hw->mac.ops.set_rar(hw, 0, hw->mac.perm_addr, 0);
 	}
 
-	msg[0] = IXGBE_VF_SET_LPE;
-	msg[1] = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
-	hw->mbx.ops.write_posted(hw, msg, 2);
-
 	spin_unlock(&adapter->mbx_lock);
 
 	clear_bit(__IXGBEVF_DOWN, &adapter->state);
@@ -2876,10 +2897,8 @@ static int ixgbevf_set_mac(struct net_device *netdev, void *p)
 static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu)
 {
 	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
-	struct ixgbe_hw *hw = &adapter->hw;
 	int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
 	int max_possible_frame = MAXIMUM_ETHERNET_VLAN_SIZE;
-	u32 msg[2];
 
 	if (adapter->hw.mac.type == ixgbe_mac_X540_vf)
 		max_possible_frame = IXGBE_MAX_JUMBO_FRAME_SIZE;
@@ -2893,12 +2912,6 @@ static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu)
 	/* must set new MTU before calling down or up */
 	netdev->mtu = new_mtu;
 
-	if (!netif_running(netdev)) {
-		msg[0] = IXGBE_VF_SET_LPE;
-		msg[1] = max_frame;
-		hw->mbx.ops.write_posted(hw, msg, 2);
-	}
-
 	if (netif_running(netdev))
 		ixgbevf_reinit_locked(adapter);
 
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c
index ec89b86..3d555a1 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.c
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.c
@@ -419,6 +419,20 @@ static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw,
 	return 0;
 }
 
+/**
+ *  ixgbevf_rlpml_set_vf - Set the maximum receive packet length
+ *  @hw: pointer to the HW structure
+ *  @max_size: value to assign to max frame size
+ **/
+void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
+{
+	u32 msgbuf[2];
+
+	msgbuf[0] = IXGBE_VF_SET_LPE;
+	msgbuf[1] = max_size;
+	ixgbevf_write_msg_read_ack(hw, msgbuf, 2);
+}
+
 static const struct ixgbe_mac_operations ixgbevf_mac_ops = {
 	.init_hw             = ixgbevf_init_hw_vf,
 	.reset_hw            = ixgbevf_reset_hw_vf,
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.h b/drivers/net/ethernet/intel/ixgbevf/vf.h
index 25c951d..07fd876 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.h
@@ -170,5 +170,6 @@ struct ixgbevf_info {
 	const struct ixgbe_mac_operations *mac_ops;
 };
 
+void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size);
 #endif /* __IXGBE_VF_H__ */
 
-- 
cgit v1.1


From a5cf5ce92ecefcbeb3265e6f894905ab3ed5c4c2 Mon Sep 17 00:00:00 2001
From: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Date: Thu, 30 Aug 2012 05:49:58 +0000
Subject: net:stmmac: Add check if mdiobus is registered in
 stmmac_mdio_unregister

This patch adds a basic check in stmmac_mdio_unregister to see if mdio
bus registeration for this driver was actually sucessfull or not.

Use case here is, if BSP considers using mdio-gpio bus along with stmmac
driver by passing mdio_bus_data as NULL in platform data.
Call to stmmac_mdio_register with mdio_bus_data as NULL returns 0, which
is a considered sucessfull call form stmmac. Then again when we unload
the driver we just call stmmac_mdio_unregister, this is were the actual
problem is stmmac-mdio code dont really know at this instance of calling
that stmmac_mdio_register was actually successful.

So Adding a check in stmmac_mdio_unregister is always safe.

Without this patch stmmac driver calls stmmac_mdio_register from
stmmac_release which Segfaults as mii bus was never registered at the
first point.

Originally the this bug was found when unloading an stmmac driver
instance which uses mdio-gpio for smi access.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index ade1082..e1f3d04 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -258,6 +258,9 @@ int stmmac_mdio_unregister(struct net_device *ndev)
 {
 	struct stmmac_priv *priv = netdev_priv(ndev);
 
+	if (!priv->mii)
+		return 0;
+
 	mdiobus_unregister(priv->mii);
 	priv->mii->priv = NULL;
 	mdiobus_free(priv->mii);
-- 
cgit v1.1


From 1f9defa0c267ebefd02b8b25697678f7911e74d8 Mon Sep 17 00:00:00 2001
From: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Date: Thu, 30 Aug 2012 05:50:19 +0000
Subject: net:stmmac: fix broken stmmac_pltfr_remove.

This patch fixes stmmac_pltfr_remove function, which is broken because,
it is accessing plat variable via freed memory priv pointer which gets
freed by free_netdev called from stmmac_dvr_remove.

In short this patch caches the plat pointer in local variable before
calling stmmac_dvr_remove to prevent code accessing freed memory.

Without this patch any attempt to remove the stmmac device will fail as
below:

Unregistering eth 0 ...
Unable to handle kernel paging request at virtual address 6b6b6bab
pgd = de5dc000
[6b6b6bab] *pgd=00000000
Internal error: Oops: 5 [#1] PREEMPT SMP
Modules linked in: cdev(O+)
CPU: 0    Tainted: G           O  (3.3.1_stm24_0210-b2000+ #25)
PC is at stmmac_pltfr_remove+0x2c/0xa0
LR is at stmmac_pltfr_remove+0x28/0xa0
pc : [<c01b8908>]    lr : [<c01b8904>]    psr: 60000013
sp : def6be78  ip : de6c5a00  fp : 00000000
r10: 00000028  r9 : c082d81d  r8 : 00000001
r7 : de65a600  r6 : df81b240  r5 : c0413fd8  r4 : 00000000
r3 : 6b6b6b6b  r2 : def6be6c  r1 : c0355e2b  r0 : 00000020
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c53c7d  Table: 5e5dc04a  DAC: 00000015
Process insmod (pid: 738, stack limit = 0xdef6a2f0)
Stack: (0xdef6be78 to 0xdef6c000)
be60:                                                       c0413fe0
c0403658
be80: c0400bb0 c019270c c01926f8 c0191478 00000000 c0414014 c0413fe0
c01914d8
bea0: 00000000 c0413fe0 df8045d0 c019109c c0413fe0 c0400bf0 c0413fd8
c018f04c
bec0: 00000000 bf000000 c0413fd8 c01929a0 c0413fd8 bf000000 00000000
c0192bfc
bee0: bf00009c bf000014 def6a000 c000859c 00000000 00000001 bf00009c
bf00009c
bf00: 00000001 bf00009c 00000001 bf0000e4 de65a600 00000001 c082d81d
c0058cd0
bf20: bf0000a8 c004fbd8 c0056414 c082d815 c02aea20 bf0001f0 00b0b008
e0846208
bf40: c03ec8a0 e0846000 0000db0d e0850604 e08504de e0853a24 00000204
000002d4
bf60: 00000000 00000000 0000001c 0000001d 00000009 00000000 00000006
00000000
bf80: 00000003 f63d4e2e 0000db0d bef02ed8 00000080 c000d2e8 def6a000
00000000
bfa0: 00000000 c000d140 f63d4e2e 0000db0d 00b0b018 0000db0d 00b0b008
b6f4f298
bfc0: f63d4e2e 0000db0d bef02ed8 00000080 00000003 00000000 00010000
00000000
bfe0: 00b0b008 bef02c64 00008d20 b6ef3784 60000010 00b0b018 5a5a5a5a
5a5a5a5a
[<c01b8908>] (stmmac_pltfr_remove+0x2c/0xa0) from [<c019270c>]
(platform_drv_remove+0x14/0x18)
[<c019270c>] (platform_drv_remove+0x14/0x18) from [<c0191478>]
(__device_release_driver+0x64/0xa4)
[<c0191478>] (__device_release_driver+0x64/0xa4) from [<c01914d8>]
(device_release_driver+0x20/0x2c)
[<c01914d8>] (device_release_driver+0x20/0x2c) from [<c019109c>]
(bus_remove_device+0xcc/0xdc)
[<c019109c>] (bus_remove_device+0xcc/0xdc) from [<c018f04c>]
(device_del+0x104/0x160)
[<c018f04c>] (device_del+0x104/0x160) from [<c01929a0>]
(platform_device_del+0x18/0x58)
[<c01929a0>] (platform_device_del+0x18/0x58) from [<c0192bfc>]
(platform_device_unregister+0xc/0x18)
[<c0192bfc>] (platform_device_unregister+0xc/0x18) from [<bf000014>]
(r_init+0x14/0x2c [cdev])
[<bf000014>] (r_init+0x14/0x2c [cdev]) from [<c000859c>]
(do_one_initcall+0x90/0x160)
[<c000859c>] (do_one_initcall+0x90/0x160) from [<c0058cd0>]
(sys_init_module+0x15c4/0x1794)
[<c0058cd0>] (sys_init_module+0x15c4/0x1794) from [<c000d140>]
(ret_fast_syscall+0x0/0x30)
Code: e1a04000 e59f0070 eb039b65 e59636e4 (e5933040)

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index b93245c..b4ffdc7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -186,6 +186,7 @@ static int stmmac_pltfr_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct stmmac_priv *priv = netdev_priv(ndev);
+	void __iomem *addr = priv->ioaddr;
 	struct resource *res;
 	int ret = stmmac_dvr_remove(ndev);
 
@@ -194,7 +195,7 @@ static int stmmac_pltfr_remove(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, NULL);
 
-	iounmap((void __force __iomem *)priv->ioaddr);
+	iounmap(addr);
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	release_mem_region(res->start, resource_size(res));
 
-- 
cgit v1.1


From d56631a66c0d0c9d662abfb38cd1f6326eeebd7c Mon Sep 17 00:00:00 2001
From: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Date: Thu, 30 Aug 2012 05:50:43 +0000
Subject: net:stmmac: Remove bus_id from mdio platform data.

This patch removes bus_id from mdio platform data, The reason to remove
bus_id is, stmmac mdio bus_id is always same as stmmac bus-id, so there
is no point in passing this in different variable.
Also stmmac ethernet driver connects to phy with bus_id passed its
platform data.
So, having single bus-id is much simpler.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 8 +++-----
 drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c  | 1 -
 2 files changed, 3 insertions(+), 6 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index e1f3d04..0376a5e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -177,7 +177,7 @@ int stmmac_mdio_register(struct net_device *ndev)
 	new_bus->write = &stmmac_mdio_write;
 	new_bus->reset = &stmmac_mdio_reset;
 	snprintf(new_bus->id, MII_BUS_ID_SIZE, "%s-%x",
-		new_bus->name, mdio_bus_data->bus_id);
+		new_bus->name, priv->plat->bus_id);
 	new_bus->priv = ndev;
 	new_bus->irq = irqlist;
 	new_bus->phy_mask = mdio_bus_data->phy_mask;
@@ -213,12 +213,10 @@ int stmmac_mdio_register(struct net_device *ndev)
 			 * and no PHY number was provided to the MAC,
 			 * use the one probed here.
 			 */
-			if ((priv->plat->bus_id == mdio_bus_data->bus_id) &&
-			    (priv->plat->phy_addr == -1))
+			if (priv->plat->phy_addr == -1)
 				priv->plat->phy_addr = addr;
 
-			act = (priv->plat->bus_id == mdio_bus_data->bus_id) &&
-				(priv->plat->phy_addr == addr);
+			act = (priv->plat->phy_addr == addr);
 			switch (phydev->irq) {
 			case PHY_POLL:
 				irq_str = "POLL";
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
index 13afb8e..1f069b0 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
@@ -40,7 +40,6 @@ static void stmmac_default_data(void)
 	plat_dat.has_gmac = 1;
 	plat_dat.force_sf_dma_mode = 1;
 
-	mdio_data.bus_id = 1;
 	mdio_data.phy_reset = NULL;
 	mdio_data.phy_mask = 0;
 	plat_dat.mdio_bus_data = &mdio_data;
-- 
cgit v1.1


From 3f8bdecd32ab8f52bff1d646e2acb7c241d12a8d Mon Sep 17 00:00:00 2001
From: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Date: Thu, 30 Aug 2012 05:51:09 +0000
Subject: net:stmmac: convert driver to use devm_request_and_ioremap.

This patch moves calls to ioremap and request_mem_region to
devm_request_and_ioremap call.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../net/ethernet/stmicro/stmmac/stmmac_platform.c  | 40 +++++-----------------
 1 file changed, 8 insertions(+), 32 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index b4ffdc7..ed112b5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -78,6 +78,7 @@ static int __devinit stmmac_pltfr_probe(struct platform_device *pdev)
 {
 	int ret = 0;
 	struct resource *res;
+	struct device *dev = &pdev->dev;
 	void __iomem *addr = NULL;
 	struct stmmac_priv *priv = NULL;
 	struct plat_stmmacenet_data *plat_dat = NULL;
@@ -87,18 +88,10 @@ static int __devinit stmmac_pltfr_probe(struct platform_device *pdev)
 	if (!res)
 		return -ENODEV;
 
-	if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
-		pr_err("%s: ERROR: memory allocation failed"
-		       "cannot get the I/O addr 0x%x\n",
-		       __func__, (unsigned int)res->start);
-		return -EBUSY;
-	}
-
-	addr = ioremap(res->start, resource_size(res));
+	addr = devm_request_and_ioremap(dev, res);
 	if (!addr) {
 		pr_err("%s: ERROR: memory mapping failed", __func__);
-		ret = -ENOMEM;
-		goto out_release_region;
+		return -ENOMEM;
 	}
 
 	if (pdev->dev.of_node) {
@@ -107,14 +100,13 @@ static int __devinit stmmac_pltfr_probe(struct platform_device *pdev)
 					GFP_KERNEL);
 		if (!plat_dat) {
 			pr_err("%s: ERROR: no memory", __func__);
-			ret = -ENOMEM;
-			goto out_unmap;
+			return  -ENOMEM;
 		}
 
 		ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
 		if (ret) {
 			pr_err("%s: main dt probe failed", __func__);
-			goto out_unmap;
+			return ret;
 		}
 	} else {
 		plat_dat = pdev->dev.platform_data;
@@ -124,13 +116,13 @@ static int __devinit stmmac_pltfr_probe(struct platform_device *pdev)
 	if (plat_dat->init) {
 		ret = plat_dat->init(pdev);
 		if (unlikely(ret))
-			goto out_unmap;
+			return ret;
 	}
 
 	priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
 	if (!priv) {
 		pr_err("%s: main driver probe failed", __func__);
-		goto out_unmap;
+		return -ENODEV;
 	}
 
 	/* Get MAC address if available (DT) */
@@ -142,8 +134,7 @@ static int __devinit stmmac_pltfr_probe(struct platform_device *pdev)
 	if (priv->dev->irq == -ENXIO) {
 		pr_err("%s: ERROR: MAC IRQ configuration "
 		       "information not found\n", __func__);
-		ret = -ENXIO;
-		goto out_unmap;
+		return -ENXIO;
 	}
 
 	/*
@@ -165,15 +156,6 @@ static int __devinit stmmac_pltfr_probe(struct platform_device *pdev)
 	pr_debug("STMMAC platform driver registration completed");
 
 	return 0;
-
-out_unmap:
-	iounmap(addr);
-	platform_set_drvdata(pdev, NULL);
-
-out_release_region:
-	release_mem_region(res->start, resource_size(res));
-
-	return ret;
 }
 
 /**
@@ -186,8 +168,6 @@ static int stmmac_pltfr_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct stmmac_priv *priv = netdev_priv(ndev);
-	void __iomem *addr = priv->ioaddr;
-	struct resource *res;
 	int ret = stmmac_dvr_remove(ndev);
 
 	if (priv->plat->exit)
@@ -195,10 +175,6 @@ static int stmmac_pltfr_remove(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, NULL);
 
-	iounmap(addr);
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(res->start, resource_size(res));
-
 	return ret;
 }
 
-- 
cgit v1.1


From da210f559019ba1cd4ebee2a28ad158bfb95bab2 Mon Sep 17 00:00:00 2001
From: Jiri Bohac <jbohac@suse.cz>
Date: Thu, 30 Aug 2012 12:02:47 +0000
Subject: bonding: add some slack to arp monitoring time limits

Currently, all the time limits in the bonding ARP monitor are in
multiples of arp_interval -- the time interval at which the ARP
monitor is periodically scheduled.

With a fast network round-trip and a little scheduling latency
of the ARP monitor work, a limit of n*delta_in_ticks may
effectively mean (n-1)*delta_in_ticks.

This is fatal in case of n==1  (the link will stay down
forever) and makes the behaviour non-deterministic in all the
other cases.

Add a delta_in_ticks/2 time slack to all the time limits.

Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/bonding/bond_main.c | 31 ++++++++++++++++++++-----------
 1 file changed, 20 insertions(+), 11 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index b24ce25..7858c58 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -2811,12 +2811,13 @@ void bond_loadbalance_arp_mon(struct work_struct *work)
 					    arp_work.work);
 	struct slave *slave, *oldcurrent;
 	int do_failover = 0;
-	int delta_in_ticks;
+	int delta_in_ticks, extra_ticks;
 	int i;
 
 	read_lock(&bond->lock);
 
 	delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval);
+	extra_ticks = delta_in_ticks / 2;
 
 	if (bond->slave_cnt == 0)
 		goto re_arm;
@@ -2839,10 +2840,10 @@ void bond_loadbalance_arp_mon(struct work_struct *work)
 		if (slave->link != BOND_LINK_UP) {
 			if (time_in_range(jiffies,
 				trans_start - delta_in_ticks,
-				trans_start + delta_in_ticks) &&
+				trans_start + delta_in_ticks + extra_ticks) &&
 			    time_in_range(jiffies,
 				slave->dev->last_rx - delta_in_ticks,
-				slave->dev->last_rx + delta_in_ticks)) {
+				slave->dev->last_rx + delta_in_ticks + extra_ticks)) {
 
 				slave->link  = BOND_LINK_UP;
 				bond_set_active_slave(slave);
@@ -2872,10 +2873,10 @@ void bond_loadbalance_arp_mon(struct work_struct *work)
 			 */
 			if (!time_in_range(jiffies,
 				trans_start - delta_in_ticks,
-				trans_start + 2 * delta_in_ticks) ||
+				trans_start + 2 * delta_in_ticks + extra_ticks) ||
 			    !time_in_range(jiffies,
 				slave->dev->last_rx - delta_in_ticks,
-				slave->dev->last_rx + 2 * delta_in_ticks)) {
+				slave->dev->last_rx + 2 * delta_in_ticks + extra_ticks)) {
 
 				slave->link  = BOND_LINK_DOWN;
 				bond_set_backup_slave(slave);
@@ -2933,6 +2934,14 @@ static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks)
 	struct slave *slave;
 	int i, commit = 0;
 	unsigned long trans_start;
+	int extra_ticks;
+
+	/* All the time comparisons below need some extra time. Otherwise, on
+	 * fast networks the ARP probe/reply may arrive within the same jiffy
+	 * as it was sent.  Then, the next time the ARP monitor is run, one
+	 * arp_interval will already have passed in the comparisons.
+	 */
+	extra_ticks = delta_in_ticks / 2;
 
 	bond_for_each_slave(bond, slave, i) {
 		slave->new_link = BOND_LINK_NOCHANGE;
@@ -2940,7 +2949,7 @@ static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks)
 		if (slave->link != BOND_LINK_UP) {
 			if (time_in_range(jiffies,
 				slave_last_rx(bond, slave) - delta_in_ticks,
-				slave_last_rx(bond, slave) + delta_in_ticks)) {
+				slave_last_rx(bond, slave) + delta_in_ticks + extra_ticks)) {
 
 				slave->new_link = BOND_LINK_UP;
 				commit++;
@@ -2956,7 +2965,7 @@ static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks)
 		 */
 		if (time_in_range(jiffies,
 				  slave->jiffies - delta_in_ticks,
-				  slave->jiffies + 2 * delta_in_ticks))
+				  slave->jiffies + 2 * delta_in_ticks + extra_ticks))
 			continue;
 
 		/*
@@ -2976,7 +2985,7 @@ static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks)
 		    !bond->current_arp_slave &&
 		    !time_in_range(jiffies,
 			slave_last_rx(bond, slave) - delta_in_ticks,
-			slave_last_rx(bond, slave) + 3 * delta_in_ticks)) {
+			slave_last_rx(bond, slave) + 3 * delta_in_ticks + extra_ticks)) {
 
 			slave->new_link = BOND_LINK_DOWN;
 			commit++;
@@ -2992,10 +3001,10 @@ static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks)
 		if (bond_is_active_slave(slave) &&
 		    (!time_in_range(jiffies,
 			trans_start - delta_in_ticks,
-			trans_start + 2 * delta_in_ticks) ||
+			trans_start + 2 * delta_in_ticks + extra_ticks) ||
 		     !time_in_range(jiffies,
 			slave_last_rx(bond, slave) - delta_in_ticks,
-			slave_last_rx(bond, slave) + 2 * delta_in_ticks))) {
+			slave_last_rx(bond, slave) + 2 * delta_in_ticks + extra_ticks))) {
 
 			slave->new_link = BOND_LINK_DOWN;
 			commit++;
@@ -3027,7 +3036,7 @@ static void bond_ab_arp_commit(struct bonding *bond, int delta_in_ticks)
 			if ((!bond->curr_active_slave &&
 			     time_in_range(jiffies,
 					   trans_start - delta_in_ticks,
-					   trans_start + delta_in_ticks)) ||
+					   trans_start + delta_in_ticks + delta_in_ticks / 2)) ||
 			    bond->curr_active_slave != slave) {
 				slave->link = BOND_LINK_UP;
 				if (bond->current_arp_slave) {
-- 
cgit v1.1


From 2a35cfa591ac63f17815c2d9432b799e37527980 Mon Sep 17 00:00:00 2001
From: Francois Romieu <romieu@fr.zoreil.com>
Date: Fri, 31 Aug 2012 23:06:17 +0200
Subject: r8169: add D-Link DGE-560T identifiers.

This one includes a 8168. Not to be confused with the sky2 driven
one whose PCI vendor and device ID are the same.

Reported-by: Neyuki Inaya <in@joblog.ru>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/realtek/r8169.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index b47d5b3..0c96604 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -287,6 +287,8 @@ static DEFINE_PCI_DEVICE_TABLE(rtl8169_pci_tbl) = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK,	0x8167), 0, 0, RTL_CFG_0 },
 	{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK,	0x8168), 0, 0, RTL_CFG_1 },
 	{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK,	0x8169), 0, 0, RTL_CFG_0 },
+	{ PCI_VENDOR_ID_DLINK,			0x4300,
+		PCI_VENDOR_ID_DLINK, 0x4b10,		 0, 0, RTL_CFG_1 },
 	{ PCI_DEVICE(PCI_VENDOR_ID_DLINK,	0x4300), 0, 0, RTL_CFG_0 },
 	{ PCI_DEVICE(PCI_VENDOR_ID_DLINK,	0x4302), 0, 0, RTL_CFG_0 },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AT,		0xc107), 0, 0, RTL_CFG_0 },
-- 
cgit v1.1