[ALSA] Check value range in ctl callbacks

Check the value ranges in ctl put callbacks properly (in the rest drivers).

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 12 insertions, 1 deletions

diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c
index 376b98691c96..af1bf4bf9459 100644
--- a/sound/sparc/dbri.c
+++ b/sound/sparc/dbri.c
@@ -2279,9 +2279,20 @@ static int snd_cs4215_put_volume(struct snd_kcontrol *kcontrol,
         struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol);
         struct dbri_streaminfo *info =
                                 &dbri->stream_info[kcontrol->private_value];
+        unsigned int vol[2];
         int changed = 0;
 
-        if (info->left_gain != ucontrol->value.integer.value[0]) {
+        vol[0] = ucontrol->value.integer.value[0];
+        vol[1] = ucontrol->value.integer.value[1];
+        if (kcontrol->private_value == DBRI_PLAY) {
+                if (vol[0] > DBRI_MAX_VOLUME || vol[1] > DBRI_MAX_VOLUME)
+                        return -EINVAL;
+        } else {
+                if (vol[0] > DBRI_MAX_GAIN || vol[1] > DBRI_MAX_GAIN)
+                        return -EINVAL;
+        }
+
+        if (info->left_gain != 
                 info->left_gain = ucontrol->value.integer.value[0];
                 changed = 1;
         }