PCI: Rename pci_is_bridge() to pci_has_subordinate()

Previously, pci_is_bridge() returned true only when a subordinate bus
existed.  Rename pci_is_bridge() to pci_has_subordinate() to better
indicate what we're checking.

No functional change.

[bhelgaas: changelog]
Signed-off-by: NYijing Wang <wangyijing@huawei.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

drivers/pci/pci-driver.c

@@ -580,14 +580,14 @@ static void pci_pm_default_resume(struct pci_dev *pci_dev)
 {
 	pci_fixup_device(pci_fixup_resume, pci_dev);
 
-	if (!pci_is_bridge(pci_dev))
+	if (!pci_has_subordinate(pci_dev))
 		pci_enable_wake(pci_dev, PCI_D0, false);
 }
 
 static void pci_pm_default_suspend(struct pci_dev *pci_dev)
 {
 	/* Disable non-bridge devices without PM support */
-	if (!pci_is_bridge(pci_dev))
+	if (!pci_has_subordinate(pci_dev))
 		pci_disable_enabled_device(pci_dev);
 }
 
@@ -717,7 +717,7 @@ static int pci_pm_suspend_noirq(struct device *dev)
 
 	if (!pci_dev->state_saved) {
 		pci_save_state(pci_dev);
-		if (!pci_is_bridge(pci_dev))
+		if (!pci_has_subordinate(pci_dev))
 			pci_prepare_to_sleep(pci_dev);
 	}
 
@@ -971,7 +971,7 @@ static int pci_pm_poweroff_noirq(struct device *dev)
 			return error;
 	}
 
-	if (!pci_dev->state_saved && !pci_is_bridge(pci_dev))
+	if (!pci_dev->state_saved && !pci_has_subordinate(pci_dev))
 		pci_prepare_to_sleep(pci_dev);
 
 	/*

drivers/pci/pci.h

@@ -77,7 +77,7 @@ static inline void pci_wakeup_event(struct pci_dev *dev)
 	pm_wakeup_event(&dev->dev, 100);
 }
 
-static inline bool pci_is_bridge(struct pci_dev *pci_dev)
+static inline bool pci_has_subordinate(struct pci_dev *pci_dev)
 {
 	return !!(pci_dev->subordinate);
 }