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>

diff --git a/drivers/media/video/s2255drv.c b/drivers/media/video/s2255drv.c
index ac9c40cf5835f78c597eb52e64d06273d3fee3fb..1f9a49e054a83a050845984d7e213a232d6cbce3 100644 (file)
--- 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