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

[mnlife qiao]

From: mnlife <mnlife at foxmail.com>

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 <mnlife at foxmail.com>
---
 sound/soc/soc-jack.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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);
 
-- 
2.17.1