kstrdup() can return NULL, it is better to check the return value of it.
Signed-off-by: xkernel <xkernel.wang@xxxxxxxxxxx>
---
sound/core/jack.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sound/core/jack.c b/sound/core/jack.c
index 32350c6..5fd9954 100644
--- a/sound/core/jack.c
+++ b/sound/core/jack.c
@@ -509,6 +509,8 @@ int snd_jack_new(struct snd_card *card, const char *id, int type,
return -ENOMEM;
jack->id = kstrdup(id, GFP_KERNEL);
+ if (jack->id == NULL)
+ return -ENOMEM;
/* don't creat input device for phantom jack */
if (!phantom_jack) {
--
