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authorTakashi Iwai <tiwai@suse.de>2018-03-08 08:32:41 +0100
committerTakashi Iwai <tiwai@suse.de>2018-03-08 08:41:13 +0100
commit7a33a02ffb0620b01892c6c6808bb711b3f63e9c (patch)
tree515538845d72e4ecaa2e992975af7913bd129bc5 /sound/core/vmaster.c
parent2e2c177ca84aff092c3c96714b0f6a12900f3946 (diff)
ALSA: vmaster: Zero-clear ctl before calling slave get
Use kzalloc() instead of kmalloc() so that we don't need to rely fully on the slave get() callback to clear the control value that might be copied to user-space. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/vmaster.c')
-rw-r--r--sound/core/vmaster.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c
index b67de2bb06a2..9e96186742d0 100644
--- a/sound/core/vmaster.c
+++ b/sound/core/vmaster.c
@@ -63,7 +63,7 @@ static int slave_update(struct link_slave *slave)
struct snd_ctl_elem_value *uctl;
int err, ch;
- uctl = kmalloc(sizeof(*uctl), GFP_KERNEL);
+ uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (!uctl)
return -ENOMEM;
uctl->id = slave->slave.id;