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;