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authorShaohua Li <shaohua.li@intel.com>2007-07-20 10:03:25 +0800
committerLen Brown <len.brown@intel.com>2007-07-22 04:18:45 -0400
commit10b3dcae0f275e2546e55303d64ddbb58cec7599 (patch)
treebd075b5fb626bdadf17cf36eebf9c659194b8e74 /drivers/pci
parentab826ca4cf2fe8ebcfd21189ca8bfeb47ca88359 (diff)
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: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/pci-acpi.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 5e866b94bca..67c63d1f158 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -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);
}