4 files changed, 25 insertions, 2 deletions

diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 2e7a3bf1382..1ab98bbe58d 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -48,6 +48,7 @@ static void pci_acpi_wake_dev(acpi_handle handle, u32 event, void *context)
         if (event == ACPI_NOTIFY_DEVICE_WAKE && pci_dev) {
                 pci_check_pme_status(pci_dev);
                 pm_runtime_resume(&pci_dev->dev);
+                pci_wakeup_event(pci_dev);
                 if (pci_dev->subordinate)
                         pci_pme_wakeup_bus(pci_dev->subordinate);
         }
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 740fb4ea966..130ed1daf0f 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1275,6 +1275,22 @@ bool pci_check_pme_status(struct pci_dev *dev)
         return ret;
 }
 
+/*
+ * Time to wait before the system can be put into a sleep state after reporting
+ * a wakeup event signaled by a PCI device.
+ */
+#define PCI_WAKEUP_COOLDOWN     100
+
+/**
+ * pci_wakeup_event - Report a wakeup event related to a given PCI device.
+ * @dev: Device to report the wakeup event for.
+ */
+void pci_wakeup_event(struct pci_dev *dev)
+{
+        if (device_may_wakeup(&dev->dev))
+                pm_wakeup_event(&dev->dev, PCI_WAKEUP_COOLDOWN);
+}
+
 /**
  * pci_pme_wakeup - Wake up a PCI device if its PME Status bit is set.
  * @dev: Device to handle.
@@ -1285,8 +1301,10 @@ bool pci_check_pme_status(struct pci_dev *dev)
  */
 static int pci_pme_wakeup(struct pci_dev *dev, void *ign)
 {
-        if (pci_check_pme_status(dev))
+        if (pci_check_pme_status(dev)) {
                 pm_request_resume(&dev->dev);
+                pci_wakeup_event(dev);
+        }
         return 0;
 }
 
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index f8077b3c8c8..c8b7fd056cc 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -56,6 +56,7 @@ extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
 extern void pci_disable_enabled_device(struct pci_dev *dev);
 extern bool pci_check_pme_status(struct pci_dev *dev);
 extern int pci_finish_runtime_suspend(struct pci_dev *dev);
+extern void pci_wakeup_event(struct pci_dev *dev);
 extern int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
 extern void pci_pme_wakeup_bus(struct pci_bus *bus);
 extern void pci_pm_init(struct pci_dev *dev);
diff --git a/drivers/pci/pcie/pme/pcie_pme.c b/drivers/pci/pcie/pme/pcie_pme.c
index d672a0a6381..bbdea18693d 100644
--- a/drivers/pci/pcie/pme/pcie_pme.c
+++ b/drivers/pci/pcie/pme/pcie_pme.c
@@ -154,6 +154,7 @@ static bool pcie_pme_walk_bus(struct pci_bus *bus)
                 /* Skip PCIe devices in case we started from a root port. */
                 if (!pci_is_pcie(dev) && pci_check_pme_status(dev)) {
                         pm_request_resume(&dev->dev);
+                        pci_wakeup_event(dev);
                         ret = true;
                 }
 
@@ -254,8 +255,10 @@ static void pcie_pme_handle_request(struct pci_dev *port, u16 req_id)
         if (found) {
                 /* The device is there, but we have to check its PME status. */
                 found = pci_check_pme_status(dev);
-                if (found)
+                if (found) {
                         pm_request_resume(&dev->dev);
+                        pci_wakeup_event(dev);
+                }
                 pci_dev_put(dev);
         } else if (devfn) {
                 /*