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ASoC: rt286: Fix potencial crash in jd function

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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 <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Bard Liao 2015-02-05 16:40:33 +08:00 committed by Mark Brown
parent 54d96a40e0
commit 28d1ad09c5
1 changed files with 2 additions and 0 deletions
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2
sound/soc/codecs/rt286.c
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@ -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;