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Diffstat (limited to 'sound/isa/opti9xx/miro.c')
-rw-r--r--sound/isa/opti9xx/miro.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/isa/opti9xx/miro.c b/sound/isa/opti9xx/miro.c
index d295936611f8..c2baf4cfb958 100644
--- a/sound/isa/opti9xx/miro.c
+++ b/sound/isa/opti9xx/miro.c
@@ -483,6 +483,10 @@ static int snd_miro_put_double(struct snd_kcontrol *kcontrol,
/* equalizer elements */
+ if (left < -0x7f || left > 0x7f ||
+ right < -0x7f || right > 0x7f)
+ return -EINVAL;
+
if (left_old > 0x80)
left_old = 0x80 - left_old;
if (right_old > 0x80)
@@ -520,6 +524,10 @@ static int snd_miro_put_double(struct snd_kcontrol *kcontrol,
/* non-equalizer elements */
+ if (left < 0 || left > 0x20 ||
+ right < 0 || right > 0x20)
+ return -EINVAL;
+
left_old = 0x20 - left_old;
right_old = 0x20 - right_old;