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 <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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 @@
*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;