[media] tvp7002: Don't update device->streaming if write to register fails

This ensures device->streaming has correct status.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/i2c/tvp7002.c b/drivers/media/i2c/tvp7002.c
index 11f2387..51bac76 100644 (file)
--- a/drivers/media/i2c/tvp7002.c
+++ b/drivers/media/i2c/tvp7002.c
@@ -775,25 +775,20 @@ static int tvp7002_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned index,
 static int tvp7002_s_stream(struct v4l2_subdev *sd, int enable)
 {
        struct tvp7002 *device = to_tvp7002(sd);
-       int error = 0;
+       int error;
 
        if (device->streaming == enable)
                return 0;
 
-       if (enable) {
-               /* Set output state on (low impedance means stream on) */
-               error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x00);
-               device->streaming = enable;
-       } else {
-               /* Set output state off (high impedance means stream off) */
-               error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x03);
-               if (error)
-                       v4l2_dbg(1, debug, sd, "Unable to stop streaming\n");
-
-               device->streaming = enable;
+       /* low impedance: on, high impedance: off */
+       error = tvp7002_write(sd, TVP7002_MISC_CTL_2, enable ? 0x00 : 0x03);
+       if (error) {
+               v4l2_dbg(1, debug, sd, "Fail to set streaming\n");
+               return error;
        }
 
-       return error;
+       device->streaming = enable;
+       return 0;
 }
 
 /*