From 28d1ad09c50c758d3e295fa7ff90a4712e1254ea Mon Sep 17 00:00:00 2001 From: Bard Liao Date: Thu, 5 Feb 2015 16:40:33 +0800 Subject: [PATCH] ASoC: rt286: Fix potencial crash in jd function We assign rt286->codec in rt286_probe. If rt286_jack_detect is invoked before rt286_probe, rt286->codec will be NULL and cause a kernel panic. Signed-off-by: Bard Liao Signed-off-by: Mark Brown --- sound/soc/codecs/rt286.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/codecs/rt286.c b/sound/soc/codecs/rt286.c index 847cc4b..f14d335 100644 --- a/sound/soc/codecs/rt286.c +++ b/sound/soc/codecs/rt286.c @@ -305,6 +305,8 @@ static int rt286_jack_detect(struct rt286_priv *rt286, bool *hp, bool *mic) *hp = false; *mic = false; + if (!rt286->codec) + return -EINVAL; if (rt286->pdata.cbj_en) { regmap_read(rt286->regmap, RT286_GET_HP_SENSE, &buf); *hp = buf & 0x80000000; -- 2.7.4