From 08cb3f60b2f866c906a5a779444b30ba8f9a93c8 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <error27@gmail.com>
Date: Wed, 4 Nov 2009 08:27:09 -0800
Subject: [PATCH] misdn: Fix reversed 'if' in st_own_ctrl

The current code probably returns -EINVAL a lot.  Otherwise it would oops.

Compile tested only.  Found by smatch (http://repo.or.cz/w/smatch.git).

Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/isdn/mISDN/stack.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/isdn/mISDN/stack.c b/drivers/isdn/mISDN/stack.c
index 3e1532a180ff..0d05ec43012c 100644
--- a/drivers/isdn/mISDN/stack.c
+++ b/drivers/isdn/mISDN/stack.c
@@ -364,7 +364,7 @@ add_layer2(struct mISDNchannel *ch, struct mISDNstack *st)
 static int
 st_own_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
 {
-	if (!ch->st || ch->st->layer1)
+	if (!ch->st || !ch->st->layer1)
 		return -EINVAL;
 	return ch->st->layer1->ctrl(ch->st->layer1, cmd, arg);
 }
-- 
2.11.0