linux-kernel - [2.6 patch] ivtv: fix NULL dereference

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Date:	Sun, 14 Oct 2007 19:51:37 +0200
From:	Adrian Bunk <bunk@...nel.org>
To:	Hans Verkuil <hverkuil@...all.nl>,
	Mauro Carvalho Chehab <mchehab@...radead.org>
Cc:	v4l-dvb-maintainer@...uxtv.org, linux-kernel@...r.kernel.org
Subject: [2.6 patch] ivtv: fix NULL dereference

We shouldn't dereference "itv" when we know it's NULL...

Spotted by the Coverity checker.

Signed-off-by: Adrian Bunk <bunk@...nel.org>

---
--- linux-2.6/drivers/media/video/ivtv/ivtv-fileops.c.old	2007-10-14 19:17:12.000000000 +0200
+++ linux-2.6/drivers/media/video/ivtv/ivtv-fileops.c	2007-10-14 19:18:05.000000000 +0200
@@ -947,7 +947,7 @@ int ivtv_v4l2_open(struct inode *inode, 
 	if (itv == NULL) {
 		/* Couldn't find a device registered
 		   on that minor, shouldn't happen! */
-		IVTV_WARN("No ivtv device found on minor %d\n", minor);
+		printk(KERN_WARNING "No ivtv device found on minor %d\n", minor);
 		return -ENXIO;
 	}
 

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