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authorNicolas Boichat <drinkcat@chromium.org>2015-07-17 10:36:57 +0800
committerMark Brown <broonie@kernel.org>2015-07-17 12:12:20 +0100
commitf2a5ded38592e5936a099ea6535ad5d3addcbc9d (patch)
tree510494e37d61e1c0dace24259edb656c0cbb8b2b /sound/soc/codecs
parentd770e558e21961ad6cfdf0ff7df0eb5d7d4f0754 (diff)
downloadlinux-stericsson-f2a5ded38592e5936a099ea6535ad5d3addcbc9d.tar.gz
ASoC: rt5645: Check if codec is initialized in workqueue handler
This fixes kernel panic on boot, if rt5645->codec is NULL when rt5645_jack_detect_work is first called. rt5645_jack_detect_work needs rt5645->codec to be initialized to setup dapm pins. Also, reporting jack events is useless, as the jacks cannot be set before the codec is ready. Since we manually call the interrupt handler in rt5645_set_jack_detect, the initial jack state will be reported correctly, and dapm pins will be setup at that time. Signed-off-by: Nicolas Boichat <drinkcat@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs')
-rw-r--r--sound/soc/codecs/rt5645.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 9ce311e088fc..e9cc3aae5366 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -2943,6 +2943,9 @@ static int rt5645_irq_detection(struct rt5645_priv *rt5645)
{
int val, btn_type, gpio_state = 0, report = 0;
+ if (!rt5645->codec)
+ return -EINVAL;
+
switch (rt5645->pdata.jd_mode) {
case 0: /* Not using rt5645 JD */
if (rt5645->gpiod_hp_det) {