From b387754d7256b1fa3610ed8a85f9274df49d1178 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Mon, 8 Apr 2013 17:25:05 -0300 Subject: [PATCH] [media] radio-si4713: fix g/s_frequency - check for invalid modulators. - clamp frequency to valid range. Signed-off-by: Hans Verkuil Acked-by: Eduardo Valentin Tested-by: Eduardo Valentin Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/si4713-i2c.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/media/radio/si4713-i2c.c b/drivers/media/radio/si4713-i2c.c index 1cb9a2e7f683..56c9241ee7fb 100644 --- a/drivers/media/radio/si4713-i2c.c +++ b/drivers/media/radio/si4713-i2c.c @@ -1261,6 +1261,7 @@ static int si4713_setup(struct si4713_device *sdev) rval |= si4713_set_rds_radio_text(sdev, tmp->rds_info.radio_text); /* Device procedure needs to set frequency first */ + f.tuner = 0; f.frequency = tmp->frequency ? tmp->frequency : DEFAULT_FREQUENCY; f.frequency = si4713_to_v4l2(f.frequency); rval |= si4713_s_frequency(&sdev->sd, &f); @@ -1852,7 +1853,8 @@ static int si4713_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) struct si4713_device *sdev = to_si4713_device(sd); int rval = 0; - f->type = V4L2_TUNER_RADIO; + if (f->tuner) + return -EINVAL; if (sdev->power_state) { u16 freq; @@ -1877,9 +1879,11 @@ static int si4713_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequenc int rval = 0; u16 frequency = v4l2_to_si4713(f->frequency); + if (f->tuner) + return -EINVAL; + /* Check frequency range */ - if (frequency < FREQ_RANGE_LOW || frequency > FREQ_RANGE_HIGH) - return -EDOM; + frequency = clamp_t(u16, frequency, FREQ_RANGE_LOW, FREQ_RANGE_HIGH); if (sdev->power_state) { rval = si4713_tx_tune_freq(sdev, frequency); -- 2.30.2