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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>
This commit is contained in:
Takashi Iwai 2018-03-08 08:32:41 +01:00
parent 2e2c177ca8
commit 7a33a02ffb
1 changed files with 1 additions and 1 deletions
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2
sound/core/vmaster.c
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@ -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;