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ALSA: vmaster: Zero-clear ctl before calling slave get

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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;