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authorTakashi Iwai <tiwai@suse.de>2007-11-15 16:14:12 +0100
committerJaroslav Kysela <perex@perex.cz>2008-01-31 17:29:25 +0100
commitd4079ac49a08e36d6839a9ceb26aec8c24c9ed82 (patch)
tree91ebc493375fd4e7fa84c3a6ab67a885121b1c81 /sound/ppc/beep.c
parentd05ab185b770de96399766be6bcb5769ab99bc09 (diff)
downloadlinux-d4079ac49a08e36d6839a9ceb26aec8c24c9ed82.tar.bz2
[ALSA] powermac - Check value range in ctl callbacks
Check the value ranges in ctl put callbacks properly in snd-powermac driver. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/ppc/beep.c')
-rw-r--r--sound/ppc/beep.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/sound/ppc/beep.c b/sound/ppc/beep.c
index 566b5ab9d4e8..465dd0466b9f 100644
--- a/sound/ppc/beep.c
+++ b/sound/ppc/beep.c
@@ -195,10 +195,13 @@ static int snd_pmac_put_beep(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
- int oval;
+ unsigned int oval, nval;
snd_assert(chip->beep, return -ENXIO);
oval = chip->beep->volume;
- chip->beep->volume = ucontrol->value.integer.value[0];
+ nval = ucontrol->value.integer.value[0];
+ if (nval > 100)
+ return -EINVAL;
+ chip->beep->volume = nval;
return oval != chip->beep->volume;
}