[PATCH] fix missing includes

[linux-drm-fsl-dcu.git] / drivers / pci / pci.c

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 992db89adce7b2ea6b03902f012b664d1ff7f0fe..e74d75843047c24cf299cf53daad16635355d640 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -15,6 +15,7 @@
 #include <linux/pci.h>
 #include <linux/module.h>
 #include <linux/spinlock.h>
+#include <linux/string.h>
 #include <asm/dma.h>   /* isa_dma_bridge_buggy */
 #include "pci.h"
 
@@ -252,6 +253,8 @@ pci_restore_bars(struct pci_dev *dev)
                pci_update_resource(dev, &dev->resource[i], i);
 }
 
+int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t t);
+
 /**
  * pci_set_power_state - Set the power state of a PCI device
  * @dev: PCI device to be suspended
@@ -266,7 +269,6 @@ pci_restore_bars(struct pci_dev *dev)
  * -EIO if device does not support PCI PM.
  * 0 if we can successfully change the power state.
  */
-int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t t);
 int
 pci_set_power_state(struct pci_dev *dev, pci_power_t state)
 {
@@ -309,17 +311,25 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
 
        pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
 
-       /* If we're in D3, force entire word to 0.
+       /* If we're (effectively) in D3, force entire word to 0.
         * This doesn't affect PME_Status, disables PME_En, and
         * sets PowerState to 0.
         */
-       if (dev->current_state >= PCI_D3hot) {
-               if (!(pmcsr & PCI_PM_CTRL_NO_SOFT_RESET))
-                       need_restore = 1;
-               pmcsr = 0;
-       } else {
+       switch (dev->current_state) {
+       case PCI_D0:
+       case PCI_D1:
+       case PCI_D2:
                pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
                pmcsr |= state;
+               break;
+       case PCI_UNKNOWN: /* Boot-up */
+               if ((pmcsr & PCI_PM_CTRL_STATE_MASK) == PCI_D3hot
+                && !(pmcsr & PCI_PM_CTRL_NO_SOFT_RESET))
+                       need_restore = 1;
+               /* Fall-through: force to D0 */
+       default:
+               pmcsr = 0;
+               break;
        }
 
        /* enter specified state */
@@ -800,8 +810,8 @@ pci_clear_mwi(struct pci_dev *dev)
 
 /**
  * pci_intx - enables/disables PCI INTx for device dev
- * @dev: the PCI device to operate on
- * @enable: boolean
+ * @pdev: the PCI device to operate on
+ * @enable: boolean: whether to enable or disable PCI INTx
  *
  * Enables/disables PCI INTx for device dev
  */