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Commit 10b3dcae authored by Shaohua Li's avatar Shaohua Li Committed by Len Brown
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ACPI: ignore _PSx method for hotplugable PCI devices 



If the ACPI device has _EJ0, ignore the device.
_PSx will set power for the slot,
and the hotplug driver will take care of _PSx.

Signed-off-by: default avatarShaohua Li <shaohua.li@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent ab826ca4

drivers/pci/pci-acpi.c

+4 −0
Original line number Diff line number Diff line
@@ -271,6 +271,7 @@ static pci_power_t acpi_pci_choose_state(struct pci_dev *pdev, 
static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)

{

	acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);

	acpi_handle tmp;

	static int state_conv[] = {

		[0] = 0,

		[1] = 1,
@@ -282,6 +283,9 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) 


	if (!handle)

		return -ENODEV;

	/* If the ACPI device has _EJ0, ignore the device */

	if (ACPI_SUCCESS(acpi_get_handle(handle, "_EJ0", &tmp)))

		return 0;

	return acpi_bus_set_power(handle, acpi_state);

}