X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fpci%2Fpci-acpi.c;h=5c6a5d043007ebec1418fe2d9a70cf5071cc06eb;hb=419217cb1d0266f62cbea6cdc6b1d1324350bc34;hp=c8062494009f8fdb692adbbe15bb741a870064cd;hpb=1f1c2881f673671539b25686df463518d69c4649;p=linux-2.6

diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index c806249400..5c6a5d0430 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -220,6 +220,7 @@ acpi_status pci_osc_control_set(acpi_handle handle, u32 flags)
 }
 EXPORT_SYMBOL(pci_osc_control_set);
 
+#ifdef CONFIG_ACPI_SLEEP
 /*
  * _SxD returns the D-state with the highest power
  * (lowest D-state number) supported in the S-state "x".
@@ -245,16 +246,34 @@ EXPORT_SYMBOL(pci_osc_control_set);
  * currently we simply return _SxD, if present.
  */
 
-static int acpi_pci_choose_state(struct pci_dev *pdev, pm_message_t state)
+static pci_power_t acpi_pci_choose_state(struct pci_dev *pdev,
+	pm_message_t state)
 {
-	/* TBD */
-
-	return -ENODEV;
+	int acpi_state;
+
+	acpi_state = acpi_pm_device_sleep_state(&pdev->dev,
+		device_may_wakeup(&pdev->dev), NULL);
+	if (acpi_state < 0)
+		return PCI_POWER_ERROR;
+
+	switch (acpi_state) {
+	case ACPI_STATE_D0:
+		return PCI_D0;
+	case ACPI_STATE_D1:
+		return PCI_D1;
+	case ACPI_STATE_D2:
+		return PCI_D2;
+	case ACPI_STATE_D3:
+		return PCI_D3hot;
+	}
+	return PCI_POWER_ERROR;
 }
+#endif
 
 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,
@@ -266,6 +285,9 @@ 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);
 }
 
@@ -320,7 +342,9 @@ static int __init acpi_pci_init(void)
 	ret = register_acpi_bus_type(&acpi_pci_bus);
 	if (ret)
 		return 0;
+#ifdef	CONFIG_ACPI_SLEEP
 	platform_pci_choose_state = acpi_pci_choose_state;
+#endif
 	platform_pci_set_power_state = acpi_pci_set_power_state;
 	return 0;
 }