hub driver: improve use of #ifdef
This patch (as736) makes the hub driver more readable by improving the
usage of "#ifdef CONFIG_PM" and "#ifdef CONFIG_USB_SUSPEND".
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 74df0db..98675fb 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -30,11 +30,22 @@
extern int usb_host_init(void);
extern void usb_host_cleanup(void);
+#ifdef CONFIG_PM
+
extern int usb_suspend_both(struct usb_device *udev, pm_message_t msg);
extern int usb_resume_both(struct usb_device *udev);
extern int usb_port_suspend(struct usb_device *dev);
extern int usb_port_resume(struct usb_device *dev);
+#else
+
+#define usb_suspend_both(udev, msg) 0
+#define usb_resume_both(udev) 0
+#define usb_port_suspend(dev) 0
+#define usb_port_resume(dev) 0
+
+#endif
+
extern struct bus_type usb_bus_type;
extern struct usb_device_driver usb_generic_driver;