Merge tag 'pm+acpi-3.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael Wysocki:
 "This is material that didn't make it to my 3.18-rc1 pull request for
  various reasons, mostly related to timing and travel (LinuxCon EU /
  LPC) plus a couple of fixes for recent bugs.

  The only really new thing here is the PM QoS class for memory
  bandwidth, but it is simple enough and users of it will be added in
  the next cycle.  One major change in behavior is that platform devices
  enumerated by ACPI will use 32-bit DMA mask by default.  Also included
  is an ACPICA update to a new upstream release, but that's mostly
  cleanups, changes in tools and similar.  The rest is fixes and
  cleanups mostly.

  Specifics:

   - Fix for a recent PCI power management change that overlooked the
     fact that some IRQ chips might not be able to configure PCIe PME
     for system wakeup from Lucas Stach.

   - Fix for a bug introduced in 3.17 where acpi_device_wakeup() is
     called with a wrong ordering of arguments from Zhang Rui.

   - A bunch of intel_pstate driver fixes (all -stable candidates) from
     Dirk Brandewie, Gabriele Mazzotta and Pali Rohár.

   - Fixes for a rather long-standing problem with the OOM killer and
     the freezer that frozen processes killed by the OOM do not actually
     release any memory until they are thawed, so OOM-killing them is
     rather pointless, with a couple of cleanups on top (Michal Hocko,
     Cong Wang, Rafael J Wysocki).

   - ACPICA update to upstream release 20140926, inlcuding mostly
     cleanups reducing differences between the upstream ACPICA and the
     kernel code, tools changes (acpidump, acpiexec) and support for the
     _DDN object (Bob Moore, Lv Zheng).

   - New PM QoS class for memory bandwidth from Tomeu Vizoso.

   - Default 32-bit DMA mask for platform devices enumerated by ACPI
     (this change is mostly needed for some drivers development in
     progress targeted at 3.19) from Heikki Krogerus.

   - ACPI EC driver cleanups, mostly related to debugging, from Lv
     Zheng.

   - cpufreq-dt driver updates from Thomas Petazzoni.

   - powernv cpuidle driver update from Preeti U Murthy"

* tag 'pm+acpi-3.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (34 commits)
  intel_pstate: Correct BYT VID values.
  intel_pstate: Fix BYT frequency reporting
  intel_pstate: Don't lose sysfs settings during cpu offline
  cpufreq: intel_pstate: Reflect current no_turbo state correctly
  cpufreq: expose scaling_cur_freq sysfs file for set_policy() drivers
  cpufreq: intel_pstate: Fix setting max_perf_pct in performance policy
  PCI / PM: handle failure to enable wakeup on PCIe PME
  ACPI: invoke acpi_device_wakeup() with correct parameters
  PM / freezer: Clean up code after recent fixes
  PM: convert do_each_thread to for_each_process_thread
  OOM, PM: OOM killed task shouldn't escape PM suspend
  freezer: remove obsolete comments in __thaw_task()
  freezer: Do not freeze tasks killed by OOM killer
  ACPI / platform: provide default DMA mask
  cpuidle: powernv: Populate cpuidle state details by querying the device-tree
  cpufreq: cpufreq-dt: adjust message related to regulators
  cpufreq: cpufreq-dt: extend with platform_data
  cpufreq: allow driver-specific data
  ACPI / EC: Cleanup coding style.
  ACPI / EC: Refine event/query debugging messages.
  ...

16 files changed, 215 insertions, 89 deletions

diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index a3c89a1..6ba8beb 100644
--- a/drivers/acpi/acpi_platform.c
+++ b/drivers/acpi/acpi_platform.c
@@ -16,6 +16,7 @@
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
 
 #include "internal.h"
@@ -102,6 +103,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev)
 	pdevinfo.res = resources;
 	pdevinfo.num_res = count;
 	pdevinfo.acpi_node.companion = adev;
+	pdevinfo.dma_mask = DMA_BIT_MASK(32);
 	pdev = platform_device_register_full(&pdevinfo);
 	if (IS_ERR(pdev))
 		dev_err(&adev->dev, "platform device creation failed: %ld\n",
diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h
index 2ad2351..c318d3e 100644
--- a/drivers/acpi/acpica/achware.h
+++ b/drivers/acpi/acpica/achware.h
@@ -127,7 +127,7 @@ acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
 
 acpi_status
 acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info,
-		       acpi_event_status * event_status);
+		       acpi_event_status *event_status);
 
 acpi_status acpi_hw_disable_all_gpes(void);
 
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 2747279..c00e7e4 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -413,8 +413,8 @@ struct acpi_gpe_handler_info {
 	acpi_gpe_handler address;	/* Address of handler, if any */
 	void *context;		/* Context to be passed to handler */
 	struct acpi_namespace_node *method_node;	/* Method node for this GPE level (saved) */
-	u8 original_flags;      /* Original (pre-handler) GPE info */
-	u8 originally_enabled;  /* True if GPE was originally enabled */
+	u8 original_flags;	/* Original (pre-handler) GPE info */
+	u8 originally_enabled;	/* True if GPE was originally enabled */
 };
 
 /* Notify info for implicit notify, multiple device objects */
diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h
index f148827..1afe46e 100644
--- a/drivers/acpi/acpica/actables.h
+++ b/drivers/acpi/acpica/actables.h
@@ -49,6 +49,8 @@ acpi_status acpi_allocate_root_table(u32 initial_table_count);
 /*
  * tbxfroot - Root pointer utilities
  */
+u32 acpi_tb_get_rsdp_length(struct acpi_table_rsdp *rsdp);
+
 acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp);
 
 u8 *acpi_tb_scan_memory_for_rsdp(u8 *start_address, u32 length);
diff --git a/drivers/acpi/acpica/amlresrc.h b/drivers/acpi/acpica/amlresrc.h
index f3f8344..3a0beeb 100644
--- a/drivers/acpi/acpica/amlresrc.h
+++ b/drivers/acpi/acpica/amlresrc.h
@@ -117,6 +117,12 @@ struct asl_resource_node {
 	struct asl_resource_node *next;
 };
 
+struct asl_resource_info {
+	union acpi_parse_object *descriptor_type_op;	/* Resource descriptor parse node */
+	union acpi_parse_object *mapping_op;	/* Used for mapfile support */
+	u32 current_byte_offset;	/* Offset in resource template */
+};
+
 /* Macros used to generate AML resource length fields */
 
 #define ACPI_AML_SIZE_LARGE(r)      (sizeof (r) - sizeof (struct aml_resource_large_header))
@@ -449,4 +455,32 @@ union aml_resource {
 	u8 byte_item;
 };
 
+/* Interfaces used by both the disassembler and compiler */
+
+void
+mp_save_gpio_info(union acpi_parse_object *op,
+		  union aml_resource *resource,
+		  u32 pin_count, u16 *pin_list, char *device_name);
+
+void
+mp_save_serial_info(union acpi_parse_object *op,
+		    union aml_resource *resource, char *device_name);
+
+char *mp_get_hid_from_parse_tree(struct acpi_namespace_node *hid_node);
+
+char *mp_get_hid_via_namestring(char *device_name);
+
+char *mp_get_connection_info(union acpi_parse_object *op,
+			     u32 pin_index,
+			     struct acpi_namespace_node **target_node,
+			     char **target_name);
+
+char *mp_get_parent_device_hid(union acpi_parse_object *op,
+			       struct acpi_namespace_node **target_node,
+			       char **parent_device_name);
+
+char *mp_get_ddn_value(char *device_name);
+
+char *mp_get_hid_value(struct acpi_namespace_node *device_node);
+
 #endif
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index e4ba4de..2095dfb 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -100,13 +100,14 @@ acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info)
  *
  * FUNCTION:    acpi_ev_enable_gpe
  *
- * PARAMETERS:  gpe_event_info  - GPE to enable
+ * PARAMETERS:  gpe_event_info          - GPE to enable
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Clear a GPE of stale events and enable it.
  *
  ******************************************************************************/
+
 acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
 {
 	acpi_status status;
@@ -125,6 +126,7 @@ acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
 	}
 
 	/* Clear the GPE (of stale events) */
+
 	status = acpi_hw_clear_gpe(gpe_event_info);
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
@@ -136,7 +138,6 @@ acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
 	return_ACPI_STATUS(status);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ev_add_gpe_reference
@@ -212,7 +213,7 @@ acpi_ev_remove_gpe_reference(struct acpi_gpe_event_info *gpe_event_info)
 		if (ACPI_SUCCESS(status)) {
 			status =
 			    acpi_hw_low_set_gpe(gpe_event_info,
-						     ACPI_GPE_DISABLE);
+						ACPI_GPE_DISABLE);
 		}
 
 		if (ACPI_FAILURE(status)) {
@@ -334,7 +335,7 @@ struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
  *
  ******************************************************************************/
 
-u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
+u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list)
 {
 	acpi_status status;
 	struct acpi_gpe_block_info *gpe_block;
@@ -427,7 +428,7 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
 
 			/* Check if there is anything active at all in this register */
 
-			enabled_status_byte = (u8) (status_reg & enable_reg);
+			enabled_status_byte = (u8)(status_reg & enable_reg);
 			if (!enabled_status_byte) {
 
 				/* No active GPEs in this register, move on */
@@ -450,7 +451,7 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
 					    acpi_ev_gpe_dispatch(gpe_block->
 								 node,
 								 &gpe_block->
-						event_info[((acpi_size) i * ACPI_GPE_REGISTER_WIDTH) + j], j + gpe_register_info->base_gpe_number);
+								 event_info[((acpi_size) i * ACPI_GPE_REGISTER_WIDTH) + j], j + gpe_register_info->base_gpe_number);
 				}
 			}
 		}
@@ -636,7 +637,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_enable_gpe(void *context)
  *
  ******************************************************************************/
 
-acpi_status acpi_ev_finish_gpe(struct acpi_gpe_event_info *gpe_event_info)
+acpi_status acpi_ev_finish_gpe(struct acpi_gpe_event_info * gpe_event_info)
 {
 	acpi_status status;
 
@@ -666,9 +667,9 @@ acpi_status acpi_ev_finish_gpe(struct acpi_gpe_event_info *gpe_event_info)
  *
  * FUNCTION:    acpi_ev_gpe_dispatch
  *
- * PARAMETERS:  gpe_device      - Device node. NULL for GPE0/GPE1
- *              gpe_event_info  - Info for this GPE
- *              gpe_number      - Number relative to the parent GPE block
+ * PARAMETERS:  gpe_device          - Device node. NULL for GPE0/GPE1
+ *              gpe_event_info      - Info for this GPE
+ *              gpe_number          - Number relative to the parent GPE block
  *
  * RETURN:      INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
  *
@@ -681,7 +682,7 @@ acpi_status acpi_ev_finish_gpe(struct acpi_gpe_event_info *gpe_event_info)
 
 u32
 acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
-		    struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
+		     struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
 {
 	acpi_status status;
 	u32 return_value;
diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c
index 49fc7ef..7be9283 100644
--- a/drivers/acpi/acpica/evgpeinit.c
+++ b/drivers/acpi/acpica/evgpeinit.c
@@ -424,6 +424,7 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle,
 	}
 
 	/* Disable the GPE in case it's been enabled already. */
+
 	(void)acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
 
 	/*
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index 11e5803..55a58f3 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -786,18 +786,26 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
 	handler->method_node = gpe_event_info->dispatch.method_node;
 	handler->original_flags = (u8)(gpe_event_info->flags &
 				       (ACPI_GPE_XRUPT_TYPE_MASK |
-				        ACPI_GPE_DISPATCH_MASK));
+					ACPI_GPE_DISPATCH_MASK));
 
 	/*
 	 * If the GPE is associated with a method, it may have been enabled
 	 * automatically during initialization, in which case it has to be
 	 * disabled now to avoid spurious execution of the handler.
 	 */
-
-	if ((handler->original_flags & ACPI_GPE_DISPATCH_METHOD)
-	    && gpe_event_info->runtime_count) {
-		handler->originally_enabled = 1;
+	if (((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) ||
+	     (handler->original_flags & ACPI_GPE_DISPATCH_NOTIFY)) &&
+	    gpe_event_info->runtime_count) {
+		handler->originally_enabled = TRUE;
 		(void)acpi_ev_remove_gpe_reference(gpe_event_info);
+
+		/* Sanity check of original type against new type */
+
+		if (type !=
+		    (u32)(gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK)) {
+			ACPI_WARNING((AE_INFO,
+				      "GPE type mismatch (level/edge)"));
+		}
 	}
 
 	/* Install the handler */
@@ -808,7 +816,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
 
 	gpe_event_info->flags &=
 	    ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
-	gpe_event_info->flags |= (u8) (type | ACPI_GPE_DISPATCH_HANDLER);
+	gpe_event_info->flags |= (u8)(type | ACPI_GPE_DISPATCH_HANDLER);
 
 	acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
 
@@ -893,7 +901,7 @@ acpi_remove_gpe_handler(acpi_handle gpe_device,
 
 	gpe_event_info->dispatch.method_node = handler->method_node;
 	gpe_event_info->flags &=
-		~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
+	    ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
 	gpe_event_info->flags |= handler->original_flags;
 
 	/*
@@ -901,7 +909,8 @@ acpi_remove_gpe_handler(acpi_handle gpe_device,
 	 * enabled, it should be enabled at this point to restore the
 	 * post-initialization configuration.
 	 */
-	if ((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) &&
+	if (((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) ||
+	     (handler->original_flags & ACPI_GPE_DISPATCH_NOTIFY)) &&
 	    handler->originally_enabled) {
 		(void)acpi_ev_add_gpe_reference(gpe_event_info);
 	}
@@ -946,7 +955,7 @@ ACPI_EXPORT_SYMBOL(acpi_remove_gpe_handler)
  * handle is returned.
  *
  ******************************************************************************/
-acpi_status acpi_acquire_global_lock(u16 timeout, u32 * handle)
+acpi_status acpi_acquire_global_lock(u16 timeout, u32 *handle)
 {
 	acpi_status status;
 
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index e286640..bb8cbf5 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -324,8 +324,9 @@ ACPI_EXPORT_SYMBOL(acpi_clear_event)
  ******************************************************************************/
 acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status)
 {
-	acpi_status status = AE_OK;
-	u32 value;
+	acpi_status status;
+	acpi_event_status local_event_status = 0;
+	u32 in_byte;
 
 	ACPI_FUNCTION_TRACE(acpi_get_event_status);
 
@@ -339,29 +340,40 @@ acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status)
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
 	}
 
-	/* Get the status of the requested fixed event */
+	/* Fixed event currently can be dispatched? */
+
+	if (acpi_gbl_fixed_event_handlers[event].handler) {
+		local_event_status |= ACPI_EVENT_FLAG_HAS_HANDLER;
+	}
+
+	/* Fixed event currently enabled? */
 
 	status =
 	    acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
-			      enable_register_id, &value);
-	if (ACPI_FAILURE(status))
+				   enable_register_id, &in_byte);
+	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
+	}
 
-	*event_status = value;
+	if (in_byte) {
+		local_event_status |= ACPI_EVENT_FLAG_ENABLED;
+	}
+
+	/* Fixed event currently active? */
 
 	status =
 	    acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
-			      status_register_id, &value);
-	if (ACPI_FAILURE(status))
+				   status_register_id, &in_byte);
+	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
+	}
 
-	if (value)
-		*event_status |= ACPI_EVENT_FLAG_SET;
-
-	if (acpi_gbl_fixed_event_handlers[event].handler)
-		*event_status |= ACPI_EVENT_FLAG_HANDLE;
+	if (in_byte) {
+		local_event_status |= ACPI_EVENT_FLAG_SET;
+	}
 
-	return_ACPI_STATUS(status);
+	(*event_status) = local_event_status;
+	return_ACPI_STATUS(AE_OK);
 }
 
 ACPI_EXPORT_SYMBOL(acpi_get_event_status)
diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c
index 56710a0..e889a53 100644
--- a/drivers/acpi/acpica/evxfgpe.c
+++ b/drivers/acpi/acpica/evxfgpe.c
@@ -106,8 +106,8 @@ ACPI_EXPORT_SYMBOL(acpi_update_all_gpes)
  *
  * FUNCTION:    acpi_enable_gpe
  *
- * PARAMETERS:  gpe_device      - Parent GPE Device. NULL for GPE0/GPE1
- *              gpe_number      - GPE level within the GPE block
+ * PARAMETERS:  gpe_device          - Parent GPE Device. NULL for GPE0/GPE1
+ *              gpe_number          - GPE level within the GPE block
  *
  * RETURN:      Status
  *
@@ -115,7 +115,6 @@ ACPI_EXPORT_SYMBOL(acpi_update_all_gpes)
  *              hardware-enabled.
  *
  ******************************************************************************/
-
 acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number)
 {
 	acpi_status status = AE_BAD_PARAMETER;
@@ -490,8 +489,8 @@ ACPI_EXPORT_SYMBOL(acpi_clear_gpe)
  *
  * FUNCTION:    acpi_get_gpe_status
  *
- * PARAMETERS:  gpe_device      - Parent GPE Device. NULL for GPE0/GPE1
- *              gpe_number      - GPE level within the GPE block
+ * PARAMETERS:  gpe_device          - Parent GPE Device. NULL for GPE0/GPE1
+ *              gpe_number          - GPE level within the GPE block
  *              event_status        - Where the current status of the event
  *                                    will be returned
  *
@@ -524,9 +523,6 @@ acpi_get_gpe_status(acpi_handle gpe_device,
 
 	status = acpi_hw_get_gpe_status(gpe_event_info, event_status);
 
-	if (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK)
-		*event_status |= ACPI_EVENT_FLAG_HANDLE;
-
 unlock_and_exit:
 	acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
 	return_ACPI_STATUS(status);
diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c
index ea62d40..48ac7b7 100644
--- a/drivers/acpi/acpica/hwgpe.c
+++ b/drivers/acpi/acpica/hwgpe.c
@@ -202,7 +202,7 @@ acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info)
 
 acpi_status
 acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
-		       acpi_event_status * event_status)
+		       acpi_event_status *event_status)
 {
 	u32 in_byte;
 	u32 register_bit;
@@ -216,6 +216,13 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
 		return (AE_BAD_PARAMETER);
 	}
 
+	/* GPE currently handled? */
+
+	if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) !=
+	    ACPI_GPE_DISPATCH_NONE) {
+		local_event_status |= ACPI_EVENT_FLAG_HAS_HANDLER;
+	}
+
 	/* Get the info block for the entire GPE register */
 
 	gpe_register_info = gpe_event_info->register_info;
diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c
index 65ab8fe..43a54af 100644
--- a/drivers/acpi/acpica/tbxfroot.c
+++ b/drivers/acpi/acpica/tbxfroot.c
@@ -50,6 +50,36 @@ ACPI_MODULE_NAME("tbxfroot")
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_tb_get_rsdp_length
+ *
+ * PARAMETERS:  rsdp                - Pointer to RSDP
+ *
+ * RETURN:      Table length
+ *
+ * DESCRIPTION: Get the length of the RSDP
+ *
+ ******************************************************************************/
+u32 acpi_tb_get_rsdp_length(struct acpi_table_rsdp *rsdp)
+{
+
+	if (!ACPI_VALIDATE_RSDP_SIG(rsdp->signature)) {
+
+		/* BAD Signature */
+
+		return (0);
+	}
+
+	/* "Length" field is available if table version >= 2 */
+
+	if (rsdp->revision >= 2) {
+		return (rsdp->length);
+	} else {
+		return (ACPI_RSDP_CHECKSUM_LENGTH);
+	}
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_tb_validate_rsdp
  *
  * PARAMETERS:  rsdp                - Pointer to unvalidated RSDP
@@ -59,7 +89,8 @@ ACPI_MODULE_NAME("tbxfroot")
  * DESCRIPTION: Validate the RSDP (ptr)
  *
  ******************************************************************************/
-acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp)
+
+acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp * rsdp)
 {
 
 	/*
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 7103de03..143ec6e 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -711,7 +711,7 @@ int acpi_pm_device_run_wake(struct device *phys_dev, bool enable)
 		return -ENODEV;
 	}
 
-	return acpi_device_wakeup(adev, enable, ACPI_STATE_S0);
+	return acpi_device_wakeup(adev, ACPI_STATE_S0, enable);
 }
 EXPORT_SYMBOL(acpi_pm_device_run_wake);
 #endif /* CONFIG_PM_RUNTIME */
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index cb6066c..3d304ff 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -128,12 +128,13 @@ static int EC_FLAGS_SKIP_DSDT_SCAN; /* Not all BIOS survive early DSDT scan */
 static int EC_FLAGS_CLEAR_ON_RESUME; /* Needs acpi_ec_clear() on boot/resume */
 
 /* --------------------------------------------------------------------------
-                             Transaction Management
-   -------------------------------------------------------------------------- */
+ *                           Transaction Management
+ * -------------------------------------------------------------------------- */
 
 static inline u8 acpi_ec_read_status(struct acpi_ec *ec)
 {
 	u8 x = inb(ec->command_addr);
+
 	pr_debug("EC_SC(R) = 0x%2.2x "
 		 "SCI_EVT=%d BURST=%d CMD=%d IBF=%d OBF=%d\n",
 		 x,
@@ -148,6 +149,7 @@ static inline u8 acpi_ec_read_status(struct acpi_ec *ec)
 static inline u8 acpi_ec_read_data(struct acpi_ec *ec)
 {
 	u8 x = inb(ec->data_addr);
+
 	pr_debug("EC_DATA(R) = 0x%2.2x\n", x);
 	return x;
 }
@@ -164,10 +166,32 @@ static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)
 	outb(data, ec->data_addr);
 }
 
+#ifdef DEBUG
+static const char *acpi_ec_cmd_string(u8 cmd)
+{
+	switch (cmd) {
+	case 0x80:
+		return "RD_EC";
+	case 0x81:
+		return "WR_EC";
+	case 0x82:
+		return "BE_EC";
+	case 0x83:
+		return "BD_EC";
+	case 0x84:
+		return "QR_EC";
+	}
+	return "UNKNOWN";
+}
+#else
+#define acpi_ec_cmd_string(cmd)		"UNDEF"
+#endif
+
 static int ec_transaction_completed(struct acpi_ec *ec)
 {
 	unsigned long flags;
 	int ret = 0;
+
 	spin_lock_irqsave(&ec->lock, flags);
 	if (ec->curr && (ec->curr->flags & ACPI_EC_COMMAND_COMPLETE))
 		ret = 1;
@@ -181,7 +205,8 @@ static bool advance_transaction(struct acpi_ec *ec)
 	u8 status;
 	bool wakeup = false;
 
-	pr_debug("===== %s =====\n", in_interrupt() ? "IRQ" : "TASK");
+	pr_debug("===== %s (%d) =====\n",
+		 in_interrupt() ? "IRQ" : "TASK", smp_processor_id());
 	status = acpi_ec_read_status(ec);
 	t = ec->curr;
 	if (!t)
@@ -198,7 +223,8 @@ static bool advance_transaction(struct acpi_ec *ec)
 				if (t->rlen == t->ri) {
 					t->flags |= ACPI_EC_COMMAND_COMPLETE;
 					if (t->command == ACPI_EC_COMMAND_QUERY)
-						pr_debug("hardware QR_EC completion\n");
+						pr_debug("***** Command(%s) hardware completion *****\n",
+							 acpi_ec_cmd_string(t->command));
 					wakeup = true;
 				}
 			} else
@@ -221,7 +247,8 @@ static bool advance_transaction(struct acpi_ec *ec)
 			t->flags |= ACPI_EC_COMMAND_POLL;
 			t->rdata[t->ri++] = 0x00;
 			t->flags |= ACPI_EC_COMMAND_COMPLETE;
-			pr_debug("software QR_EC completion\n");
+			pr_debug("***** Command(%s) software completion *****\n",
+				 acpi_ec_cmd_string(t->command));
 			wakeup = true;
 		} else if ((status & ACPI_EC_FLAG_IBF) == 0) {
 			acpi_ec_write_cmd(ec, t->command);
@@ -264,6 +291,7 @@ static int ec_poll(struct acpi_ec *ec)
 {
 	unsigned long flags;
 	int repeat = 5; /* number of command restarts */
+
 	while (repeat--) {
 		unsigned long delay = jiffies +
 			msecs_to_jiffies(ec_delay);
@@ -296,18 +324,25 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
 {
 	unsigned long tmp;
 	int ret = 0;
+
 	if (EC_FLAGS_MSI)
 		udelay(ACPI_EC_MSI_UDELAY);
 	/* start transaction */
 	spin_lock_irqsave(&ec->lock, tmp);
 	/* following two actions should be kept atomic */
 	ec->curr = t;
+	pr_debug("***** Command(%s) started *****\n",
+		 acpi_ec_cmd_string(t->command));
 	start_transaction(ec);
 	spin_unlock_irqrestore(&ec->lock, tmp);
 	ret = ec_poll(ec);
 	spin_lock_irqsave(&ec->lock, tmp);
-	if (ec->curr->command == ACPI_EC_COMMAND_QUERY)
+	if (ec->curr->command == ACPI_EC_COMMAND_QUERY) {
 		clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
+		pr_debug("***** Event stopped *****\n");
+	}
+	pr_debug("***** Command(%s) stopped *****\n",
+		 acpi_ec_cmd_string(t->command));
 	ec->curr = NULL;
 	spin_unlock_irqrestore(&ec->lock, tmp);
 	return ret;
@@ -317,6 +352,7 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
 {
 	int status;
 	u32 glk;
+
 	if (!ec || (!t) || (t->wlen && !t->wdata) || (t->rlen && !t->rdata))
 		return -EINVAL;
 	if (t->rdata)
@@ -333,8 +369,6 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
 			goto unlock;
 		}
 	}
-	pr_debug("transaction start (cmd=0x%02x, addr=0x%02x)\n",
-			t->command, t->wdata ? t->wdata[0] : 0);
 	/* disable GPE during transaction if storm is detected */
 	if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
 		/* It has to be disabled, so that it doesn't trigger. */
@@ -355,7 +389,6 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
 			t->irq_count);
 		set_bit(EC_FLAGS_GPE_STORM, &ec->flags);
 	}
-	pr_debug("transaction end\n");
 	if (ec->global_lock)
 		acpi_release_global_lock(glk);
 unlock:
@@ -383,7 +416,7 @@ static int acpi_ec_burst_disable(struct acpi_ec *ec)
 				acpi_ec_transaction(ec, &t) : 0;
 }
 
-static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 * data)
+static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 *data)
 {
 	int result;
 	u8 d;
@@ -419,10 +452,9 @@ int ec_read(u8 addr, u8 *val)
 	if (!err) {
 		*val = temp_data;
 		return 0;
-	} else
-		return err;
+	}
+	return err;
 }
-
 EXPORT_SYMBOL(ec_read);
 
 int ec_write(u8 addr, u8 val)
@@ -436,22 +468,21 @@ int ec_write(u8 addr, u8 val)
 
 	return err;
 }
-
 EXPORT_SYMBOL(ec_write);
 
 int ec_transaction(u8 command,
-		   const u8 * wdata, unsigned wdata_len,
-		   u8 * rdata, unsigned rdata_len)
+		   const u8 *wdata, unsigned wdata_len,
+		   u8 *rdata, unsigned rdata_len)
 {
 	struct transaction t = {.command = command,
 				.wdata = wdata, .rdata = rdata,
 				.wlen = wdata_len, .rlen = rdata_len};
+
 	if (!first_ec)
 		return -ENODEV;
 
 	return acpi_ec_transaction(first_ec, &t);
 }
-
 EXPORT_SYMBOL(ec_transaction);
 
 /* Get the handle to the EC device */
@@ -461,7 +492,6 @@ acpi_handle ec_get_handle(void)
 		return NULL;
 	return first_ec->handle;
 }
-
 EXPORT_SYMBOL(ec_get_handle);
 
 /*
@@ -525,13 +555,14 @@ void acpi_ec_unblock_transactions_early(void)
 		clear_bit(EC_FLAGS_BLOCKED, &first_ec->flags);
 }
 
-static int acpi_ec_query_unlocked(struct acpi_ec *ec, u8 * data)
+static int acpi_ec_query_unlocked(struct acpi_ec *ec, u8 *data)
 {
 	int result;
 	u8 d;
 	struct transaction t = {.command = ACPI_EC_COMMAND_QUERY,
 				.wdata = NULL, .rdata = &d,
 				.wlen = 0, .rlen = 1};
+
 	if (!ec || !data)
 		return -EINVAL;
 	/*
@@ -557,6 +588,7 @@ int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
 {
 	struct acpi_ec_query_handler *handler =
 	    kzalloc(sizeof(struct acpi_ec_query_handler), GFP_KERNEL);
+
 	if (!handler)
 		return -ENOMEM;
 
@@ -569,12 +601,12 @@ int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
 	mutex_unlock(&ec->mutex);
 	return 0;
 }
-
 EXPORT_SYMBOL_GPL(acpi_ec_add_query_handler);
 
 void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)
 {
 	struct acpi_ec_query_handler *handler, *tmp;
+
 	mutex_lock(&ec->mutex);
 	list_for_each_entry_safe(handler, tmp, &ec->list, node) {
 		if (query_bit == handler->query_bit) {
@@ -584,20 +616,20 @@ void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)
 	}
 	mutex_unlock(&ec->mutex);
 }
-
 EXPORT_SYMBOL_GPL(acpi_ec_remove_query_handler);
 
 static void acpi_ec_run(void *cxt)
 {
 	struct acpi_ec_query_handler *handler = cxt;
+
 	if (!handler)
 		return;
-	pr_debug("start query execution\n");
+	pr_debug("##### Query(0x%02x) started #####\n", handler->query_bit);
 	if (handler->func)
 		handler->func(handler->data);
 	else if (handler->handle)
 		acpi_evaluate_object(handler->handle, NULL, NULL, NULL);
-	pr_debug("stop query execution\n");
+	pr_debug("##### Query(0x%02x) stopped #####\n", handler->query_bit);
 	kfree(handler);
 }
 
@@ -620,8 +652,8 @@ static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data)
 			if (!copy)
 				return -ENOMEM;
 			memcpy(copy, handler, sizeof(*copy));
-			pr_debug("push query execution (0x%2x) on queue\n",
-				value);
+			pr_debug("##### Query(0x%02x) scheduled #####\n",
+				 handler->query_bit);
 			return acpi_os_execute((copy->func) ?
 				OSL_NOTIFY_HANDLER : OSL_GPE_HANDLER,
 				acpi_ec_run, copy);
@@ -633,6 +665,7 @@ static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data)
 static void acpi_ec_gpe_query(void *ec_cxt)
 {
 	struct acpi_ec *ec = ec_cxt;
+
 	if (!ec)
 		return;
 	mutex_lock(&ec->mutex);
@@ -644,7 +677,7 @@ static int ec_check_sci(struct acpi_ec *ec, u8 state)
 {
 	if (state & ACPI_EC_FLAG_SCI) {
 		if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) {
-			pr_debug("push gpe query to the queue\n");
+			pr_debug("***** Event started *****\n");
 			return acpi_os_execute(OSL_NOTIFY_HANDLER,
 				acpi_ec_gpe_query, ec);
 		}
@@ -667,8 +700,8 @@ static u32 acpi_ec_gpe_handler(acpi_handle gpe_device,
 }
 
 /* --------------------------------------------------------------------------
-                             Address Space Management
-   -------------------------------------------------------------------------- */
+ *                           Address Space Management
+ * -------------------------------------------------------------------------- */
 
 static acpi_status
 acpi_ec_space_handler(u32 function, acpi_physical_address address,
@@ -699,27 +732,26 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 	switch (result) {
 	case -EINVAL:
 		return AE_BAD_PARAMETER;
-		break;
 	case -ENODEV:
 		return AE_NOT_FOUND;
-		break;
 	case -ETIME:
 		return AE_TIME;
-		break;
 	default:
 		return AE_OK;
 	}
 }
 
 /* --------------------------------------------------------------------------
-                               Driver Interface
-   -------------------------------------------------------------------------- */
+ *                             Driver Interface
+ * -------------------------------------------------------------------------- */
+
 static acpi_status
 ec_parse_io_ports(struct acpi_resource *resource, void *context);
 
 static struct acpi_ec *make_acpi_ec(void)
 {
 	struct acpi_ec *ec = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
+
 	if (!ec)
 		return NULL;
 	ec->flags = 1 << EC_FLAGS_QUERY_PENDING;
@@ -742,9 +774,8 @@ acpi_ec_register_query_methods(acpi_handle handle, u32 level,
 
 	status = acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer);
 
-	if (ACPI_SUCCESS(status) && sscanf(node_name, "_Q%x", &value) == 1) {
+	if (ACPI_SUCCESS(status) && sscanf(node_name, "_Q%x", &value) == 1)
 		acpi_ec_add_query_handler(ec, value, handle, NULL, NULL);
-	}
 	return AE_OK;
 }
 
@@ -753,7 +784,6 @@ ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
 {
 	acpi_status status;
 	unsigned long long tmp = 0;
-
 	struct acpi_ec *ec = context;
 
 	/* clear addr values, ec_parse_io_ports depend on it */
@@ -781,6 +811,7 @@ ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
 static int ec_install_handlers(struct acpi_ec *ec)
 {
 	acpi_status status;
+
 	if (test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags))
 		return 0;
 	status = acpi_install_gpe_handler(NULL, ec->gpe,
@@ -1078,7 +1109,8 @@ int __init acpi_ec_ecdt_probe(void)
 		boot_ec->data_addr = ecdt_ptr->data.address;
 		boot_ec->gpe = ecdt_ptr->gpe;
 		boot_ec->handle = ACPI_ROOT_OBJECT;
-		acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, &boot_ec->handle);
+		acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id,
+				&boot_ec->handle);
 		/* Don't trust ECDT, which comes from ASUSTek */
 		if (!EC_FLAGS_VALIDATE_ECDT)
 			goto install;
@@ -1162,6 +1194,5 @@ static void __exit acpi_ec_exit(void)
 {
 
 	acpi_bus_unregister_driver(&acpi_ec_driver);
-	return;
 }
 #endif	/* 0 */
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 095c6dd..d670158 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1470,7 +1470,7 @@ static void acpi_wakeup_gpe_init(struct acpi_device *device)
 	if (ACPI_FAILURE(status))
 		return;
 
-	wakeup->flags.run_wake = !!(event_status & ACPI_EVENT_FLAG_HANDLE);
+	wakeup->flags.run_wake = !!(event_status & ACPI_EVENT_FLAG_HAS_HANDLER);
 }
 
 static void acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 38cb978..13e577c 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -537,7 +537,7 @@ static ssize_t counter_show(struct kobject *kobj,
 	if (result)
 		goto end;
 
-	if (!(status & ACPI_EVENT_FLAG_HANDLE))
+	if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER))
 		size += sprintf(buf + size, "   invalid");
 	else if (status & ACPI_EVENT_FLAG_ENABLED)
 		size += sprintf(buf + size, "   enabled");
@@ -581,7 +581,7 @@ static ssize_t counter_set(struct kobject *kobj,
 	if (result)
 		goto end;
 
-	if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
+	if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER)) {
 		printk(KERN_WARNING PREFIX
 		       "Can not change Invalid GPE/Fixed Event status\n");
 		return -EINVAL;