1 files changed, 14 insertions, 2 deletions

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index fde41cc14734..d408a3c30426 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -517,7 +517,12 @@ pci_enable_device_bars(struct pci_dev *dev, int bars)
 int
 pci_enable_device(struct pci_dev *dev)
 {
-        int err = pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1);
+        int err;
+
+        if (dev->is_enabled)
+                return 0;
+
+        err = pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1);
         if (err)
                 return err;
         pci_fixup_device(pci_fixup_enable, dev);
@@ -546,7 +551,14 @@ void
 pci_disable_device(struct pci_dev *dev)
 {
         u16 pci_command;
-        
+
+        if (dev->msi_enabled)
+                disable_msi_mode(dev, pci_find_capability(dev, PCI_CAP_ID_MSI),
+                        PCI_CAP_ID_MSI);
+        if (dev->msix_enabled)
+                disable_msi_mode(dev, pci_find_capability(dev, PCI_CAP_ID_MSI),
+                        PCI_CAP_ID_MSIX);
+
         pci_read_config_word(dev, PCI_COMMAND, &pci_command);
         if (pci_command & PCI_COMMAND_MASTER) {
                 pci_command &= ~PCI_COMMAND_MASTER;