diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 68f91a25259563c6bb7250d8ea3acfd636ad0b29..97a8194063b5d66fd754680a5c94323bec456c8c 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -184,7 +184,7 @@ void pci_enable_bridges(struct pci_bus *bus)
 
 	list_for_each_entry(dev, &bus->devices, bus_list) {
 		if (dev->subordinate) {
-			if (atomic_read(&dev->enable_cnt) == 0) {
+			if (!pci_is_enabled(dev)) {
 				retval = pci_enable_device(dev);
 				pci_set_master(dev);
 			}
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index e9a8706a640182de0da0257cf2d82b590245eaf5..cd8e682c04aa0636c47c2b08b821a445a1d09994 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -148,7 +148,7 @@ static ssize_t is_enabled_store(struct device *dev,
 		return -EPERM;
 
 	if (!val) {
-		if (atomic_read(&pdev->enable_cnt) != 0)
+		if (pci_is_enabled(pdev))
 			pci_disable_device(pdev);
 		else
 			result = -EIO;
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 445fb6f7ea3fa01dc79beabc6d5685c48fa064fe..16fd0d4c316655dbcfb8729f82a9aef5cabb7e8c 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -844,7 +844,7 @@ static int do_pci_enable_device(struct pci_dev *dev, int bars)
  */
 int pci_reenable_device(struct pci_dev *dev)
 {
-	if (atomic_read(&dev->enable_cnt))
+	if (pci_is_enabled(dev))
 		return do_pci_enable_device(dev, (1 << PCI_NUM_RESOURCES) - 1);
 	return 0;
 }
@@ -1042,7 +1042,7 @@ static void do_pci_disable_device(struct pci_dev *dev)
  */
 void pci_disable_enabled_device(struct pci_dev *dev)
 {
-	if (atomic_read(&dev->enable_cnt))
+	if (pci_is_enabled(dev))
 		do_pci_disable_device(dev);
 }
 
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 334285a8e23760f7b36eda595e9ef7aa0da0ecf4..8d9da9d30a61ffcd058c352f22cc6baab8f9e9a4 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -144,7 +144,7 @@ static void pci_setup_bridge(struct pci_bus *bus)
 	struct pci_bus_region region;
 	u32 l, bu, lu, io_upper16;
 
-	if (!pci_is_root_bus(bus) && bus->is_added)
+	if (pci_is_enabled(bridge))
 		return;
 
 	dev_info(&bridge->dev, "PCI bridge, secondary bus %04x:%02x\n",
diff --git a/include/linux/pci.h b/include/linux/pci.h
index a7fe4bbd7ff1f7be9eb28952bffd8802c55e6ff8..72698d89e767c76909fb0b4cdb65f292c93e0b76 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -674,6 +674,11 @@ int __must_check pci_reenable_device(struct pci_dev *);
 int __must_check pcim_enable_device(struct pci_dev *pdev);
 void pcim_pin_device(struct pci_dev *pdev);
 
+static inline int pci_is_enabled(struct pci_dev *pdev)
+{
+	return (atomic_read(&pdev->enable_cnt) > 0);
+}
+
 static inline int pci_is_managed(struct pci_dev *pdev)
 {
 	return pdev->is_managed;