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authorTakashi Iwai <tiwai@suse.de>2007-11-15 16:17:24 +0100
committerJaroslav Kysela <perex@perex.cz>2008-01-31 17:29:25 +0100
commit3b892467786410f26dffc2c7bccd3ea445604037 (patch)
tree4a70f86b1545e9be95d987fc248cac3cebbbd9a8 /sound/sparc/dbri.c
parent498ade1a133dffd0f3ee90952737045d56e6689a (diff)
downloadlinux-linaro-3b892467786410f26dffc2c7bccd3ea445604037.tar.gz
[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>
Diffstat (limited to 'sound/sparc/dbri.c')
-rw-r--r--sound/sparc/dbri.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c
index 376b98691c9..af1bf4bf945 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;
}