[media] drx-j: Fix detection of no signal

When the signal is 7, it means that no signal was received.

Value experimentally measured.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/drx39xyj/drxj.c b/drivers/media/dvb-frontends/drx39xyj/drxj.c
index 9958277dd943..8098d87cda0b 100644
--- a/drivers/media/dvb-frontends/drx39xyj/drxj.c
+++ b/drivers/media/dvb-frontends/drx39xyj/drxj.c
@@ -9420,6 +9420,9 @@ static int get_sig_strength(struct drx_demod_instance *demod, u16 *sig_strength)
                 *sig_strength = (20 * if_gain / if_agc_sns);
         }
 
+        if (*sig_strength <= 7)
+                *sig_strength = 0;
+
         return 0;
         rw_error:
         return -EIO;