1 files changed, 5 insertions, 2 deletions

diff --git a/sound/sh/aica.c b/sound/sh/aica.c
index 8861d2f7796e..12c41df255a1 100644
--- a/sound/sh/aica.c
+++ b/sound/sh/aica.c
@@ -523,11 +523,14 @@ static int aica_pcmvolume_put(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
 {
         struct snd_card_aica *dreamcastcard;
+        unsigned int vol;
         dreamcastcard = kcontrol->private_data;
         if (unlikely(!dreamcastcard->channel))
                 return -ETXTBSY;
-        if (unlikely(dreamcastcard->channel->vol ==
-                     ucontrol->value.integer.value[0]))
+        vol = ucontrol->value.integer.value[0];
+        if (vol > 0xff)
+                return -EINVAL;
+        if (unlikely(dreamcastcard->channel->vol == vol))
                 return 0;
         dreamcastcard->channel->vol = ucontrol->value.integer.value[0];
         dreamcastcard->master_volume = ucontrol->value.integer.value[0];