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ALSA: lola: add a check for the return of vmalloc()
author
Xiaoke Wang
<xkernel.wang@foxmail.com>
Fri, 4 Mar 2022 08:38:20 +0000
(16:38 +0800)
committer
Takashi Iwai
<tiwai@suse.de>
Fri, 4 Mar 2022 08:51:37 +0000
(09:51 +0100)
vmalloc() is a memory allocation function which can return NULL when
some internal memory errors happen. So it is better to check the return
of it to catch the error in time.
Signed-off-by: Xiaoke Wang <xkernel.wang@foxmail.com>
Link:
https://lore.kernel.org/r/tencent_4221FC4089F6DF01C48F192E5784038BA205@qq.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/lola/lola_mixer.c
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diff --git
a/sound/pci/lola/lola_mixer.c
b/sound/pci/lola/lola_mixer.c
index
e2c8f14
..
6b16248
100644
(file)
--- a/
sound/pci/lola/lola_mixer.c
+++ b/
sound/pci/lola/lola_mixer.c
@@
-121,6
+121,8
@@
int lola_init_mixer_widget(struct lola *chip, int nid)
/* reserve memory to copy mixer data for sleep mode transitions */
chip->mixer.array_saved = vmalloc(sizeof(struct lola_mixer_array));
+ if (!chip->mixer.array_saved)
+ return -ENOMEM;
/* mixer matrix sources are physical input data and play streams */
chip->mixer.src_stream_outs = chip->pcm[PLAY].num_streams;