diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2013-05-31 06:21:03 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-06-17 09:32:43 -0300 |
| commit | 96bb42b8ab3d4f15b5e98a65c6d8decf36f3f930 (patch) | |
| tree | ef33d1bd0118ba6844edf3022d6601d9500e8407 /drivers/media/radio/radio-sf16fmi.c | |
| parent | f90842d62b16356a8316528c91d0757a17d3e9e3 (diff) | |
[media] radio-sf16fmi: clamp frequency
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/radio/radio-sf16fmi.c')
| -rw-r--r-- | drivers/media/radio/radio-sf16fmi.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/media/radio/radio-sf16fmi.c b/drivers/media/radio/radio-sf16fmi.c index 80beda7781bc..9cd0338a3d2b 100644 --- a/drivers/media/radio/radio-sf16fmi.c +++ b/drivers/media/radio/radio-sf16fmi.c @@ -55,8 +55,8 @@ static struct fmi fmi_card; static struct pnp_dev *dev; bool pnp_attached; -#define RSF16_MINFREQ (87 * 16000) -#define RSF16_MAXFREQ (108 * 16000) +#define RSF16_MINFREQ (87U * 16000) +#define RSF16_MAXFREQ (108U * 16000) #define FMI_BIT_TUN_CE (1 << 0) #define FMI_BIT_TUN_CLK (1 << 1) @@ -155,15 +155,14 @@ static int vidioc_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *f) { struct fmi *fmi = video_drvdata(file); + unsigned freq = f->frequency; if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) return -EINVAL; - if (f->frequency < RSF16_MINFREQ || - f->frequency > RSF16_MAXFREQ) - return -EINVAL; + clamp(freq, RSF16_MINFREQ, RSF16_MAXFREQ); /* rounding in steps of 800 to match the freq that will be used */ - lm7000_set_freq((f->frequency / 800) * 800, fmi, fmi_set_pins); + lm7000_set_freq((freq / 800) * 800, fmi, fmi_set_pins); return 0; } |