Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

[linux-2.6] / drivers / pci / pci.c

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index e632a58ba5d0e1d8b2124f66ae271e1be7858b8c..e9c356236d27378d2529ab0dc67ef14b776dd3d3 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -17,6 +17,7 @@
 #include <linux/string.h>
 #include <linux/log2.h>
 #include <linux/pci-aspm.h>
+#include <linux/pm_wakeup.h>
 #include <asm/dma.h>   /* isa_dma_bridge_buggy */
 #include "pci.h"
 
@@ -1039,7 +1040,7 @@ int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state)
  * @dev: PCI device to handle.
  * @state: PCI state from which device will issue PME#.
  */
-static bool pci_pme_capable(struct pci_dev *dev, pci_power_t state)
+bool pci_pme_capable(struct pci_dev *dev, pci_power_t state)
 {
        if (!dev->pm_cap)
                return false;
@@ -1122,18 +1123,10 @@ int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable)
 }
 
 /**
- * pci_prepare_to_sleep - prepare PCI device for system-wide transition into
- *                        a sleep state
- * @dev: Device to handle.
- *
- * Choose the power state appropriate for the device depending on whether
- * it can wake up the system and/or is power manageable by the platform
- * (PCI_D3hot is the default) and put the device into that state.
  */
-int pci_prepare_to_sleep(struct pci_dev *dev)
+pci_power_t pci_target_state(struct pci_dev *dev)
 {
        pci_power_t target_state = PCI_D3hot;
-       int error;
 
        if (platform_pci_power_manageable(dev)) {
                /*
@@ -1152,7 +1145,6 @@ int pci_prepare_to_sleep(struct pci_dev *dev)
                                break;
                default:
                        target_state = state;
-                       pci_enable_wake(dev, target_state, true);
                }
        } else if (device_may_wakeup(&dev->dev)) {
                /*
@@ -1161,16 +1153,36 @@ int pci_prepare_to_sleep(struct pci_dev *dev)
                 * to generate PME#.
                 */
                if (!dev->pm_cap)
-                       return -EIO;
+                       return PCI_POWER_ERROR;
 
                if (dev->pme_support) {
                        while (target_state
                              && !(dev->pme_support & (1 << target_state)))
                                target_state--;
-                       pci_pme_active(dev, true);
                }
        }
 
+       return target_state;
+}
+
+/**
+ * pci_prepare_to_sleep - prepare PCI device for system-wide transition into a sleep state
+ * @dev: Device to handle.
+ *
+ * Choose the power state appropriate for the device depending on whether
+ * it can wake up the system and/or is power manageable by the platform
+ * (PCI_D3hot is the default) and put the device into that state.
+ */
+int pci_prepare_to_sleep(struct pci_dev *dev)
+{
+       pci_power_t target_state = pci_target_state(dev);
+       int error;
+
+       if (target_state == PCI_POWER_ERROR)
+               return -EIO;
+
+       pci_enable_wake(dev, target_state, true);
+
        error = pci_set_power_state(dev, target_state);
 
        if (error)
@@ -1180,8 +1192,7 @@ int pci_prepare_to_sleep(struct pci_dev *dev)
 }
 
 /**
- * pci_back_from_sleep - turn PCI device on during system-wide transition into
- *                       the working state a sleep state
+ * pci_back_from_sleep - turn PCI device on during system-wide transition into working state
  * @dev: Device to handle.
  *
  * Disable device's sytem wake-up capability and put it into D0.
@@ -1919,7 +1930,9 @@ EXPORT_SYMBOL(pci_select_bars);
 EXPORT_SYMBOL(pci_set_power_state);
 EXPORT_SYMBOL(pci_save_state);
 EXPORT_SYMBOL(pci_restore_state);
+EXPORT_SYMBOL(pci_pme_capable);
 EXPORT_SYMBOL(pci_enable_wake);
+EXPORT_SYMBOL(pci_target_state);
 EXPORT_SYMBOL(pci_prepare_to_sleep);
 EXPORT_SYMBOL(pci_back_from_sleep);
 EXPORT_SYMBOL_GPL(pci_set_pcie_reset_state);