1 files changed, 14 insertions, 15 deletions

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index df495300ce3d..d3eab057b2d3 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -551,7 +551,9 @@ static int pci_save_pcie_state(struct pci_dev *dev)
 	if (pos <= 0)
 		return 0;
 
-	save_state = kzalloc(sizeof(*save_state) + sizeof(u16) * 4, GFP_KERNEL);
+	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP);
+	if (!save_state)
+		save_state = kzalloc(sizeof(*save_state) + sizeof(u16) * 4, GFP_KERNEL);
 	if (!save_state) {
 		dev_err(&dev->dev, "Out of memory in pci_save_pcie_state\n");
 		return -ENOMEM;
@@ -582,8 +584,6 @@ static void pci_restore_pcie_state(struct pci_dev *dev)
 	pci_write_config_word(dev, pos + PCI_EXP_LNKCTL, cap[i++]);
 	pci_write_config_word(dev, pos + PCI_EXP_SLTCTL, cap[i++]);
 	pci_write_config_word(dev, pos + PCI_EXP_RTCTL, cap[i++]);
-	pci_remove_saved_cap(save_state);
-	kfree(save_state);
 }
 
 
@@ -597,7 +597,9 @@ static int pci_save_pcix_state(struct pci_dev *dev)
 	if (pos <= 0)
 		return 0;
 
-	save_state = kzalloc(sizeof(*save_state) + sizeof(u16), GFP_KERNEL);
+	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP);
+	if (!save_state)
+		save_state = kzalloc(sizeof(*save_state) + sizeof(u16), GFP_KERNEL);
 	if (!save_state) {
 		dev_err(&dev->dev, "Out of memory in pci_save_pcie_state\n");
 		return -ENOMEM;
@@ -622,8 +624,6 @@ static void pci_restore_pcix_state(struct pci_dev *dev)
 	cap = (u16 *)&save_state->data[0];
 
 	pci_write_config_word(dev, pos + PCI_X_CMD, cap[i++]);
-	pci_remove_saved_cap(save_state);
-	kfree(save_state);
 }
 
 
@@ -638,8 +638,6 @@ pci_save_state(struct pci_dev *dev)
 	/* XXX: 100% dword access ok here? */
 	for (i = 0; i < 16; i++)
 		pci_read_config_dword(dev, i * 4,&dev->saved_config_space[i]);
-	if ((i = pci_save_msi_state(dev)) != 0)
-		return i;
 	if ((i = pci_save_pcie_state(dev)) != 0)
 		return i;
 	if ((i = pci_save_pcix_state(dev)) != 0)
@@ -757,7 +755,8 @@ int pci_enable_device(struct pci_dev *dev)
  * when a device is enabled using managed PCI device enable interface.
  */
 struct pci_devres {
-	unsigned int disable:1;
+	unsigned int enabled:1;
+	unsigned int pinned:1;
 	unsigned int orig_intx:1;
 	unsigned int restore_intx:1;
 	u32 region_mask;
@@ -781,7 +780,7 @@ static void pcim_release(struct device *gendev, void *res)
 	if (this->restore_intx)
 		pci_intx(dev, this->orig_intx);
 
-	if (this->disable)
+	if (this->enabled && !this->pinned)
 		pci_disable_device(dev);
 }
 
@@ -820,12 +819,12 @@ int pcim_enable_device(struct pci_dev *pdev)
 	dr = get_pci_dr(pdev);
 	if (unlikely(!dr))
 		return -ENOMEM;
-	WARN_ON(!!dr->disable);
+	WARN_ON(!!dr->enabled);
 
 	rc = pci_enable_device(pdev);
 	if (!rc) {
 		pdev->is_managed = 1;
-		dr->disable = 1;
+		dr->enabled = 1;
 	}
 	return rc;
 }
@@ -843,9 +842,9 @@ void pcim_pin_device(struct pci_dev *pdev)
 	struct pci_devres *dr;
 
 	dr = find_pci_dr(pdev);
-	WARN_ON(!dr || !dr->disable);
+	WARN_ON(!dr || !dr->enabled);
 	if (dr)
-		dr->disable = 0;
+		dr->pinned = 1;
 }
 
 /**
@@ -876,7 +875,7 @@ pci_disable_device(struct pci_dev *dev)
 
 	dr = find_pci_dr(dev);
 	if (dr)
-		dr->disable = 0;
+		dr->enabled = 0;
 
 	if (atomic_sub_return(1, &dev->enable_cnt) != 0)
 		return;