[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>
diff --git a/sound/isa/opti9xx/miro.c b/sound/isa/opti9xx/miro.c
index d295936..c2baf4c 100644
--- a/sound/isa/opti9xx/miro.c
+++ b/sound/isa/opti9xx/miro.c
@@ -483,6 +483,10 @@
/* 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 @@
/* non-equalizer elements */
+ if (left < 0 || left > 0x20 ||
+ right < 0 || right > 0x20)
+ return -EINVAL;
+
left_old = 0x20 - left_old;
right_old = 0x20 - right_old;