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authorZhang Rui <rui.zhang@intel.com>2013-09-03 08:32:02 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-09-24 01:37:55 +0200
commitbe07c00e1639e6aa098d8ac5ea4d5ac58c3dbc50 (patch)
tree9d930fec7f17c8ce9b7d2e8e0a7363d1a57f308d /drivers/pci/pci-acpi.c
parent2fd6f9c302153ad136455a6bfb36afa97f631e41 (diff)
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pci-acpi: convert acpi_get_handle() to acpi_has_method()
acpi_has_method() is a new ACPI API introduced to check the existence of an ACPI control method. It can be used to replace acpi_get_handle() in the case that 1. the calling function doesn't need the ACPI handle of the control method. and 2. the calling function doesn't care the reason why the method is unavailable. Convert acpi_get_handle() to acpi_has_method() in drivers/pci/pci-acpi.c in this patch. Signed-off-by: Zhang Rui <rui.zhang@intel.com> CC: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/pci/pci-acpi.c')
-rw-r--r--drivers/pci/pci-acpi.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index b0299e6d9a3f..dfd1f59de729 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -181,7 +181,6 @@ static bool acpi_pci_power_manageable(struct pci_dev *dev)
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 const u8 state_conv[] = {
[PCI_D0] = ACPI_STATE_D0,
[PCI_D1] = ACPI_STATE_D1,
@@ -192,7 +191,7 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
int error = -EINVAL;
/* If the ACPI device has _EJ0, ignore the device */
- if (!handle || ACPI_SUCCESS(acpi_get_handle(handle, "_EJ0", &tmp)))
+ if (!handle || acpi_has_method(handle, "_EJ0"))
return -ENODEV;
switch (state) {