[PATCH] misc NULL noise removal

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/watchdog/machzwd.c b/drivers/char/watchdog/machzwd.c
index 276577d..4d730fd 100644
--- a/drivers/char/watchdog/machzwd.c
+++ b/drivers/char/watchdog/machzwd.c
@@ -325,7 +325,7 @@
 			return put_user(0, p);
 
 		case WDIOC_KEEPALIVE:
-			zf_ping(0);
+			zf_ping(NULL);
 			break;
 
 		default: