V4L/DVB: s2255drv: return if vdev not found

The original code didn't handle the case where vdev was not found so I
added a check for that.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: linux-dev@sensoray.com
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/media/video/s2255drv.c b/drivers/media/video/s2255drv.c
index ac9c40cf5835..1f9a49e054a8 100644
--- a/drivers/media/video/s2255drv.c
+++ b/drivers/media/video/s2255drv.c
@@ -1716,11 +1716,15 @@ static int s2255_open(struct file *file)
         dprintk(1, "s2255: open called (dev=%s)\n",
                 video_device_node_name(vdev));
 
-        for (i = 0; i < MAX_CHANNELS; i++)
+        for (i = 0; i < MAX_CHANNELS; i++) {
                 if (&dev->vdev[i] == vdev) {
                         cur_channel = i;
                         break;
                 }
+        }
+        if (i == MAX_CHANNELS)
+                return -ENODEV;
+
         /*
          * open lock necessary to prevent multiple instances
          * of v4l-conf (or other programs) from simultaneously