From: Eric Sesterhenn <snakebyte@gmx.de>

If we enter the if(!zd) and set free to 1, we dereference zd in the exit
code.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 drivers/net/wireless/zd1201.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff -puN drivers/net/wireless/zd1201.c~possible-dereference-in-drivers-net-wireless-zd1201c drivers/net/wireless/zd1201.c
--- a/drivers/net/wireless/zd1201.c~possible-dereference-in-drivers-net-wireless-zd1201c
+++ a/drivers/net/wireless/zd1201.c
@@ -193,10 +193,8 @@ static void zd1201_usbrx(struct urb *urb
 	struct sk_buff *skb;
 	unsigned char type;
 
-	if (!zd) {
-		free = 1;
-		goto exit;
-	}
+	if (!zd)
+		return;
 
 	switch(urb->status) {
 		case -EILSEQ:
_