[PATCH] ALSA: lola: add a check for the return of vmalloc()
xkernel.wang at foxmail.com
xkernel.wang at foxmail.com
Fri Mar 4 09:38:20 CET 2022
From: Xiaoke Wang <xkernel.wang at foxmail.com>
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 at foxmail.com>
---
sound/pci/lola/lola_mixer.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sound/pci/lola/lola_mixer.c b/sound/pci/lola/lola_mixer.c
index e2c8f14..6b16248 100644
--- 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;
--
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