ASoC: soc-jack: calling snd_soc_jack_report causes a null pointer access

Commit Message

mnlife qiao July 19, 2020, 3:08 a.m. UTC

From: mnlife <[e-mail]>

When snd_soc_card_jack_new is not called or the call fails,
calling this function causes a null pointer access

Signed-off-by: mnlife <[e-mail]>
---
 sound/soc/soc-jack.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/sound/soc/soc-jack.c b/sound/soc/soc-jack.c
index 0f1820f36b4d..51b799ee98b7 100644
--- a/sound/soc/soc-jack.c
+++ b/sound/soc/soc-jack.c
@@ -44,7 +44,7 @@  void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask)
 	unsigned int sync = 0;
 	int enable;
 
-	if (!jack)
+	if (!jack || !jack->jack)
 		return;
 	trace_snd_soc_jack_report(jack, mask, status);