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path: root/drivers/pci/pci-acpi.c
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Diffstat (limited to 'drivers/pci/pci-acpi.c')
-rw-r--r--drivers/pci/pci-acpi.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index e4df71ab79b3..6bc0d8c870af 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -277,12 +277,11 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
[PCI_D3hot] = ACPI_STATE_D3,
[PCI_D3cold] = ACPI_STATE_D3
};
+ int error = -EINVAL;
- if (!handle)
- return -ENODEV;
/* If the ACPI device has _EJ0, ignore the device */
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_EJ0", &tmp)))
- return 0;
+ if (!handle || ACPI_SUCCESS(acpi_get_handle(handle, "_EJ0", &tmp)))
+ return -ENODEV;
switch (state) {
case PCI_D0:
@@ -290,9 +289,14 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
case PCI_D2:
case PCI_D3hot:
case PCI_D3cold:
- return acpi_bus_set_power(handle, state_conv[state]);
+ error = acpi_bus_set_power(handle, state_conv[state]);
}
- return -EINVAL;
+
+ if (!error)
+ dev_printk(KERN_INFO, &dev->dev,
+ "power state changed by ACPI to D%d\n", state);
+
+ return error;
}
static struct pci_platform_pm_ops acpi_pci_platform_pm = {