diff options
| -rw-r--r-- | drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c index 1c1f040122d7..7d0ddd5c8cce 100644 --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c @@ -71,6 +71,7 @@ static int snd_bcm2835_ctl_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol); + struct snd_ctl_elem_info info; int val, *valp; int changed = 0; @@ -84,6 +85,11 @@ static int snd_bcm2835_ctl_put(struct snd_kcontrol *kcontrol, return -EINVAL; val = ucontrol->value.integer.value[0]; + + snd_bcm2835_ctl_info(kcontrol, &info); + if (val < info.value.integer.min || val > info.value.integer.max) + return -EINVAL; + mutex_lock(&chip->audio_mutex); if (val != *valp) { *valp = val; |