Commit a424948d authored by Rafael J. Wysocki's avatar Rafael J. Wysocki Committed by Jesse Barnes

PCI/ACPI/PM: Avoid resuming devices that don't signal PME

Modify pci_acpi_wake_dev() to avoid resuming PME-capable devices
whose PME Status bits are not set, which may happen currently if
several devices are associated with the same wakeup GPE and all
of them are notified whenever at least one of them signals PME.
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent d90116ea
...@@ -45,16 +45,20 @@ static void pci_acpi_wake_dev(acpi_handle handle, u32 event, void *context) ...@@ -45,16 +45,20 @@ static void pci_acpi_wake_dev(acpi_handle handle, u32 event, void *context)
{ {
struct pci_dev *pci_dev = context; struct pci_dev *pci_dev = context;
if (event == ACPI_NOTIFY_DEVICE_WAKE && pci_dev) { if (event != ACPI_NOTIFY_DEVICE_WAKE || !pci_dev)
return;
if (!pci_dev->pm_cap || !pci_dev->pme_support
|| pci_check_pme_status(pci_dev)) {
if (pci_dev->pme_poll) if (pci_dev->pme_poll)
pci_dev->pme_poll = false; pci_dev->pme_poll = false;
pci_wakeup_event(pci_dev); pci_wakeup_event(pci_dev);
pci_check_pme_status(pci_dev);
pm_runtime_resume(&pci_dev->dev); pm_runtime_resume(&pci_dev->dev);
if (pci_dev->subordinate)
pci_pme_wakeup_bus(pci_dev->subordinate);
} }
if (pci_dev->subordinate)
pci_pme_wakeup_bus(pci_dev->subordinate);
} }
/** /**
......
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