---
 drivers/pci/pci-driver.c |    9 +++++++++
 1 file changed, 9 insertions(+)

Index: linux-2.6/drivers/pci/pci-driver.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci-driver.c
+++ linux-2.6/drivers/pci/pci-driver.c
@@ -519,8 +519,17 @@ static void pci_pm_set_unknown_state(str
  */
 static int pci_pm_reenable_device(struct pci_dev *pci_dev)
 {
+	u16 cmd;
 	int retval;
 
+	/* update enable_cnt according to cmd register */
+	pci_read_config_word(pci_dev, PCI_COMMAND, &cmd);
+	if (!pci_dev->is_busmaster && (cmd & PCI_COMMAND_MASTER))
+		pci_dev->is_busmaster = true;
+	if (!pci_is_enabled(pci_dev) &&
+	    (cmd & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)))
+		atomic_inc(&pci_dev->enable_cnt);
+
 	/* if the device was enabled before suspend, reenable */
 	retval = pci_reenable_device(pci_dev);
 	/*