[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>

diff --git a/drivers/media/radio/radio-sf16fmi.c b/drivers/media/radio/radio-sf16fmi.c
index 80beda7..9cd0338 100644 (file)
--- 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;
 }