USB: host: Use usb_hcd_platform_shutdown() wherever possible

Most HCD drivers are doing the same thing in their ".shutdown" callback
so it makes sense to use the generic usb_hcd_platform_shutdown()
handler there.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
index 7cc26e6..aba645b 100644
--- a/drivers/usb/host/ehci-s5p.c
+++ b/drivers/usb/host/ehci-s5p.c
@@ -220,14 +220,6 @@
 	return 0;
 }
 
-static void s5p_ehci_shutdown(struct platform_device *pdev)
-{
-	struct usb_hcd *hcd = platform_get_drvdata(pdev);
-
-	if (hcd->driver->shutdown)
-		hcd->driver->shutdown(hcd);
-}
-
 #ifdef CONFIG_PM
 static int s5p_ehci_suspend(struct device *dev)
 {
@@ -297,7 +289,7 @@
 static struct platform_driver s5p_ehci_driver = {
 	.probe		= s5p_ehci_probe,
 	.remove		= s5p_ehci_remove,
-	.shutdown	= s5p_ehci_shutdown,
+	.shutdown	= usb_hcd_platform_shutdown,
 	.driver = {
 		.name	= "s5p-ehci",
 		.owner	= THIS_MODULE,