Merge tag 'pci-v4.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "PCI changes:

   - add support for PCI on ARM64 boxes with ACPI. We already had this
     for theoretical spec-compliant hardware; now we're adding quirks
     for the actual hardware (Cavium, HiSilicon, Qualcomm, X-Gene)

   - add runtime PM support for hotplug ports

   - enable runtime suspend for Intel UHCI that uses platform-specific
     wakeup signaling

   - add yet another host bridge registration interface. We hope this is
     extensible enough to subsume the others

   - expose device revision in sysfs for DRM

   - to avoid device conflicts, make sure any VF BAR updates are done
     before enabling the VF

   - avoid unnecessary link retrains for ASPM

   - allow INTx masking on Mellanox devices that support it

   - allow access to non-standard VPD for Chelsio devices

   - update Broadcom iProc support for PAXB v2, PAXC v2, inbound DMA,
     etc

   - update Rockchip support for max-link-speed

   - add NVIDIA Tegra210 support

   - add Layerscape LS1046a support

   - update R-Car compatibility strings

   - add Qualcomm MSM8996 support

   - remove some uninformative bootup messages"

* tag 'pci-v4.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (115 commits)
  PCI: Enable access to non-standard VPD for Chelsio devices (cxgb3)
  PCI: Expand "VPD access disabled" quirk message
  PCI: pciehp: Remove loading message
  PCI: hotplug: Remove hotplug core message
  PCI: Remove service driver load/unload messages
  PCI/AER: Log AER IRQ when claiming Root Port
  PCI/AER: Log errors with PCI device, not PCIe service device
  PCI/AER: Remove unused version macros
  PCI/PME: Log PME IRQ when claiming Root Port
  PCI/PME: Drop unused support for PMEs from Root Complex Event Collectors
  PCI: Move config space size macros to pci_regs.h
  x86/platform/intel-mid: Constify mid_pci_platform_pm
  PCI/ASPM: Don't retrain link if ASPM not possible
  PCI: iproc: Skip check for legacy IRQ on PAXC buses
  PCI: pciehp: Leave power indicator on when enabling already-enabled slot
  PCI: pciehp: Prioritize data-link event over presence detect
  PCI: rcar: Add gen3 fallback compatibility string for pcie-rcar
  PCI: rcar: Use gen2 fallback compatibility last
  PCI: rcar-gen2: Use gen2 fallback compatibility last
  PCI: rockchip: Move the deassert of pm/aclk/pclk after phy_init()
  ..

6 files changed, 29 insertions, 53 deletions

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index a46b585..5ed2dca 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -222,35 +222,6 @@ static void acpiphp_post_dock_fixup(struct acpi_device *adev)
 	acpiphp_let_context_go(context);
 }
 
-/* Check whether the PCI device is managed by native PCIe hotplug driver */
-static bool device_is_managed_by_native_pciehp(struct pci_dev *pdev)
-{
-	u32 reg32;
-	acpi_handle tmp;
-	struct acpi_pci_root *root;
-
-	/* Check whether the PCIe port supports native PCIe hotplug */
-	if (pcie_capability_read_dword(pdev, PCI_EXP_SLTCAP, &reg32))
-		return false;
-	if (!(reg32 & PCI_EXP_SLTCAP_HPC))
-		return false;
-
-	/*
-	 * Check whether native PCIe hotplug has been enabled for
-	 * this PCIe hierarchy.
-	 */
-	tmp = acpi_find_root_bridge_handle(pdev);
-	if (!tmp)
-		return false;
-	root = acpi_pci_find_root(tmp);
-	if (!root)
-		return false;
-	if (!(root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL))
-		return false;
-
-	return true;
-}
-
 /**
  * acpiphp_add_context - Add ACPIPHP context to an ACPI device object.
  * @handle: ACPI handle of the object to add a context to.
@@ -334,7 +305,7 @@ static acpi_status acpiphp_add_context(acpi_handle handle, u32 lvl, void *data,
 	 * expose slots to user space in those cases.
 	 */
 	if ((acpi_pci_check_ejectable(pbus, handle) || is_dock_device(adev))
-	    && !(pdev && device_is_managed_by_native_pciehp(pdev))) {
+	    && !(pdev && pdev->is_hotplug_bridge && pciehp_is_native(pdev))) {
 		unsigned long long sun;
 		int retval;
 
diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
index 74f3a06..ec009a7 100644
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -867,7 +867,8 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	 */
 	if ((pdev->revision <= 2) && (vendor_id != PCI_VENDOR_ID_INTEL)) {
 		err(msg_HPC_not_supported);
-		return -ENODEV;
+		rc = -ENODEV;
+		goto err_disable_device;
 	}
 
 	/* TODO: This code can be made to support non-Compaq or Intel
diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
index fea0b8b..56013d0 100644
--- a/drivers/pci/hotplug/pci_hotplug_core.c
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -23,6 +23,9 @@
  *
  * Send feedback to <kristen.c.accardi@intel.com>
  *
+ * Authors:
+ *   Greg Kroah-Hartman <greg@kroah.com>
+ *   Scott Murray <scottm@somanetworks.com>
  */
 
 #include <linux/module.h>	/* try_module_get & module_put */
@@ -50,15 +53,9 @@
 #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME, ## arg)
 #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME, ## arg)
 
-
 /* local variables */
 static bool debug;
 
-#define DRIVER_VERSION	"0.5"
-#define DRIVER_AUTHOR	"Greg Kroah-Hartman <greg@kroah.com>, Scott Murray <scottm@somanetworks.com>"
-#define DRIVER_DESC	"PCI Hot Plug PCI Core"
-
-
 static LIST_HEAD(pci_hotplug_slot_list);
 static DEFINE_MUTEX(pci_hp_mutex);
 
@@ -534,7 +531,6 @@ static int __init pci_hotplug_init(void)
 		return result;
 	}
 
-	info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
 	return result;
 }
 device_initcall(pci_hotplug_init);
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index 7d32fa33..35d8484 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -25,6 +25,10 @@
  *
  * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
  *
+ * Authors:
+ *   Dan Zink <dan.zink@compaq.com>
+ *   Greg Kroah-Hartman <greg@kroah.com>
+ *   Dely Sy <dely.l.sy@intel.com>"
  */
 
 #include <linux/moduleparam.h>
@@ -42,10 +46,6 @@ bool pciehp_poll_mode;
 int pciehp_poll_time;
 static bool pciehp_force;
 
-#define DRIVER_VERSION	"0.4"
-#define DRIVER_AUTHOR	"Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
-#define DRIVER_DESC	"PCI Express Hot Plug Controller Driver"
-
 /*
  * not really modular, but the easiest way to keep compat with existing
  * bootargs behaviour is to continue using module_param here.
@@ -333,7 +333,6 @@ static int __init pcied_init(void)
 
 	retval = pcie_port_service_register(&hpdriver_portdrv);
 	dbg("pcie_port_service_register = %d\n", retval);
-	info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
 	if (retval)
 		dbg("Failure to register service\n");
 
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index efe69e8..10c9c0b 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -31,6 +31,7 @@
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/slab.h>
+#include <linux/pm_runtime.h>
 #include <linux/pci.h>
 #include "../pci.h"
 #include "pciehp.h"
@@ -98,6 +99,7 @@ static int board_added(struct slot *p_slot)
 	pciehp_green_led_blink(p_slot);
 
 	/* Check link training status */
+	pm_runtime_get_sync(&ctrl->pcie->port->dev);
 	retval = pciehp_check_link_status(ctrl);
 	if (retval) {
 		ctrl_err(ctrl, "Failed to check link status\n");
@@ -118,12 +120,14 @@ static int board_added(struct slot *p_slot)
 		if (retval != -EEXIST)
 			goto err_exit;
 	}
+	pm_runtime_put(&ctrl->pcie->port->dev);
 
 	pciehp_green_led_on(p_slot);
 	pciehp_set_attention_status(p_slot, 0);
 	return 0;
 
 err_exit:
+	pm_runtime_put(&ctrl->pcie->port->dev);
 	set_slot_off(ctrl, p_slot);
 	return retval;
 }
@@ -137,7 +141,9 @@ static int remove_board(struct slot *p_slot)
 	int retval;
 	struct controller *ctrl = p_slot->ctrl;
 
+	pm_runtime_get_sync(&ctrl->pcie->port->dev);
 	retval = pciehp_unconfigure_device(p_slot);
+	pm_runtime_put(&ctrl->pcie->port->dev);
 	if (retval)
 		return retval;
 
@@ -410,7 +416,7 @@ int pciehp_enable_slot(struct slot *p_slot)
 		if (getstatus) {
 			ctrl_info(ctrl, "Slot(%s): Already enabled\n",
 				  slot_name(p_slot));
-			return -EINVAL;
+			return 0;
 		}
 	}
 
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index b57fc6d..026830a 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -620,8 +620,18 @@ static irqreturn_t pciehp_isr(int irq, void *dev_id)
 		pciehp_queue_interrupt_event(slot, INT_BUTTON_PRESS);
 	}
 
-	/* Check Presence Detect Changed */
-	if (events & PCI_EXP_SLTSTA_PDC) {
+	/*
+	 * Check Link Status Changed at higher precedence than Presence
+	 * Detect Changed.  The PDS value may be set to "card present" from
+	 * out-of-band detection, which may be in conflict with a Link Down
+	 * and cause the wrong event to queue.
+	 */
+	if (events & PCI_EXP_SLTSTA_DLLSC) {
+		ctrl_info(ctrl, "Slot(%s): Link %s\n", slot_name(slot),
+			  link ? "Up" : "Down");
+		pciehp_queue_interrupt_event(slot, link ? INT_LINK_UP :
+					     INT_LINK_DOWN);
+	} else if (events & PCI_EXP_SLTSTA_PDC) {
 		present = !!(status & PCI_EXP_SLTSTA_PDS);
 		ctrl_info(ctrl, "Slot(%s): Card %spresent\n", slot_name(slot),
 			  present ? "" : "not ");
@@ -636,13 +646,6 @@ static irqreturn_t pciehp_isr(int irq, void *dev_id)
 		pciehp_queue_interrupt_event(slot, INT_POWER_FAULT);
 	}
 
-	if (events & PCI_EXP_SLTSTA_DLLSC) {
-		ctrl_info(ctrl, "Slot(%s): Link %s\n", slot_name(slot),
-			  link ? "Up" : "Down");
-		pciehp_queue_interrupt_event(slot, link ? INT_LINK_UP :
-					     INT_LINK_DOWN);
-	}
-
 	return IRQ_HANDLED;
 }