If those callbacks fail, it should return zero, and not a random
value.
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
---
drivers/media/v4l2-core/tuner-core.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c
index f1e8b40..cf9a9af 100644
--- a/drivers/media/v4l2-core/tuner-core.c
+++ b/drivers/media/v4l2-core/tuner-core.c
@@ -220,18 +220,20 @@ static void fe_standby(struct dvb_frontend *fe)
static int fe_has_signal(struct dvb_frontend *fe)
{
- u16 strength = 0;
+ u16 strength;
- fe->ops.tuner_ops.get_rf_strength(fe, &strength);
+ if (fe->ops.tuner_ops.get_rf_strength(fe, &strength) < 0)
+ return 0;
return strength;
}
static int fe_get_afc(struct dvb_frontend *fe)
{
- s32 afc = 0;
+ s32 afc;
- fe->ops.tuner_ops.get_afc(fe, &afc);
+ if (fe->ops.tuner_ops.get_afc(fe, &afc) < 0)
+ return 0;
return afc;
}
--
1.8.1.4
--
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