V4L/DVB (13868): gspca - sn9c20x: Fix test of unsigned.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
CC: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/gspca/sn9c20x.c b/drivers/media/video/gspca/sn9c20x.c
index 4cff803..0ca1c06 100644 (file)
--- a/drivers/media/video/gspca/sn9c20x.c
+++ b/drivers/media/video/gspca/sn9c20x.c
@@ -2319,7 +2319,7 @@ static void do_autogain(struct gspca_dev *gspca_dev, u16 avg_lum)
                }
        }
        if (avg_lum > MAX_AVG_LUM) {
-               if (sd->gain - 1 >= 0) {
+               if (sd->gain >= 1) {
                        sd->gain--;
                        set_gain(gspca_dev);
                }