提交 96bb42b8 编写于 作者: H Hans Verkuil 提交者: Mauro Carvalho Chehab

[media] radio-sf16fmi: clamp frequency

Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Cc: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
上级 f90842d6
无相关合并请求
......@@ -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;
}
......
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