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authorDan Carpenter <dan.carpenter@oracle.com>2015-11-10 20:23:53 -0200
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-11-17 14:38:18 -0200
commit0dac45f0e5a5f55cf454e9e2ca86221539e63357 (patch)
tree7c407b3decbf99c6eb3b6e9996e390e7d5e7b3e2 /drivers/media/pci
parent75d63a40a5c01cf6ba9572cb124488a0e3baa6c1 (diff)
[media] av7110: potential divide by zero
"len" comes from dvb_video_ioctl() and there is a possibility that it is zero. We do a divide by len later in the function so that's not ok. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/pci')
-rw-r--r--drivers/media/pci/ttpci/av7110_av.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/pci/ttpci/av7110_av.c b/drivers/media/pci/ttpci/av7110_av.c
index ccb3b2c89ef8..1cf906047353 100644
--- a/drivers/media/pci/ttpci/av7110_av.c
+++ b/drivers/media/pci/ttpci/av7110_av.c
@@ -1045,6 +1045,9 @@ static int play_iframe(struct av7110 *av7110, char __user *buf, unsigned int len
dprintk(2, "av7110:%p, \n", av7110);
+ if (len == 0)
+ return 0;
+
if (!(av7110->playing & RP_VIDEO)) {
if (av7110_av_start_play(av7110, RP_VIDEO) < 0)
return -EBUSY;

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