[media] r820t: better report signal strength

If signal is zero, shows it as a zero, not as 0xff.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Tested-by: Antti Palosaari <crope@iki.fi>

diff --git a/drivers/media/tuners/r820t.c b/drivers/media/tuners/r820t.c
index 5be4635..d5686e8 100644 (file)
--- a/drivers/media/tuners/r820t.c
+++ b/drivers/media/tuners/r820t.c
@@ -1506,6 +1506,8 @@ static int r820t_signal(struct dvb_frontend *fe, u16 *strength)
 
                /* A higher gain at LNA means a lower signal strength */
                *strength = (45 - rc) << 4 | 0xff;
+               if (*strength == 0xff)
+                       *strength = 0;
        } else {
                *strength = 0;
        }