From cc8ba5f3b9755882555762a2c4fadc56f4517228 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 16 May 2019 12:42:20 +0200 Subject: ACPI/PCI: PM: Add missing wakeup.flags.valid checks [ Upstream commit 9a51c6b1f9e0239a9435db036b212498a2a3b75c ] Both acpi_pci_need_resume() and acpi_dev_needs_resume() check if the current ACPI wakeup configuration of the device matches what is expected as far as system wakeup from sleep states is concerned, as reflected by the device_may_wakeup() return value for the device. However, they only should do that if wakeup.flags.valid is set for the device's ACPI companion, because otherwise the wakeup.prepare_count value for it is meaningless. Add the missing wakeup.flags.valid checks to these functions. Signed-off-by: Rafael J. Wysocki Reviewed-by: Mika Westerberg Signed-off-by: Sasha Levin --- drivers/acpi/device_pm.c | 4 ++-- drivers/pci/pci-acpi.c | 3 ++- 2 files changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index 824ae985ad93..ccb59768b1f3 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -949,8 +949,8 @@ static bool acpi_dev_needs_resume(struct device *dev, struct acpi_device *adev) u32 sys_target = acpi_target_system_state(); int ret, state; - if (!pm_runtime_suspended(dev) || !adev || - device_may_wakeup(dev) != !!adev->wakeup.prepare_count) + if (!pm_runtime_suspended(dev) || !adev || (adev->wakeup.flags.valid && + device_may_wakeup(dev) != !!adev->wakeup.prepare_count)) return true; if (sys_target == ACPI_STATE_S0) diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index e1949f7efd9c..bf32fde328c2 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -666,7 +666,8 @@ static bool acpi_pci_need_resume(struct pci_dev *dev) if (!adev || !acpi_device_power_manageable(adev)) return false; - if (device_may_wakeup(&dev->dev) != !!adev->wakeup.prepare_count) + if (adev->wakeup.flags.valid && + device_may_wakeup(&dev->dev) != !!adev->wakeup.prepare_count) return true; if (acpi_target_system_state() == ACPI_STATE_S0) -- cgit v1.2.3