nbd: restructure sock_shutdown

This patch restructures sock_shutdown to avoid having the main code path
in an if block.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index bf0de30..137b45f 100644 (file)
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -119,12 +119,13 @@ static void nbd_end_request(struct nbd_device *nbd, struct request *req)
  */
 static void sock_shutdown(struct nbd_device *nbd)
 {
-       if (nbd->sock) {
-               dev_warn(disk_to_dev(nbd->disk), "shutting down socket\n");
-               kernel_sock_shutdown(nbd->sock, SHUT_RDWR);
-               nbd->sock = NULL;
-               del_timer_sync(&nbd->timeout_timer);
-       }
+       if (!nbd->sock)
+               return;
+
+       dev_warn(disk_to_dev(nbd->disk), "shutting down socket\n");
+       kernel_sock_shutdown(nbd->sock, SHUT_RDWR);
+       nbd->sock = NULL;
+       del_timer_sync(&nbd->timeout_timer);
 }
 
 static void nbd_xmit_timeout(unsigned long arg)