diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2022-01-06 14:01:23 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-01-06 16:55:47 +0300 |
| commit | a2d6d84db2e7bcc831aed90f33334c70a1b060a3 (patch) | |
| tree | cf6cfa90afc922f0aafdfb2e320dfbf8ec2c8182 /sound | |
| parent | e4c35e75209bda13e57c9bc8d280366c2b9275a5 (diff) | |
| download | linux-a2d6d84db2e7bcc831aed90f33334c70a1b060a3.tar.xz | |
ASoC: rt5640: Fix possible NULL pointer deref on resume
Commit 2b9c8d2b3c89 ("ASoC: rt5640: Add the HDA header support") adds
re-queuing of the jack_work on resume when rt5640->jd_src != 0.
But the jack_work will unconditionally deref rt5640->jack and that might
be NULL. E.g. the sound/soc/intel/boards/bytcr_rt5640.c machine driver
call snd_soc_component_set_jack(codec, NULL, NULL) from pre_suspend to
disable the IRQ to avoid spurious wakeups, so when rt5640_resume()
runs rt5640->jack will be NULL in this case.
Make the queueing of the work conditional on rt5640->jack instead of
on rt5640->jd_src to fix this.
Fixes: 2b9c8d2b3c89 ("ASoC: rt5640: Add the HDA header support")
Cc: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220106110128.66049-2-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/rt5640.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c index f3659b14c74e..ceb2d50b17aa 100644 --- a/sound/soc/codecs/rt5640.c +++ b/sound/soc/codecs/rt5640.c @@ -2737,7 +2737,7 @@ static int rt5640_resume(struct snd_soc_component *component) regcache_cache_only(rt5640->regmap, false); regcache_sync(rt5640->regmap); - if (rt5640->jd_src) { + if (rt5640->jack) { if (rt5640->jd_src == RT5640_JD_SRC_HDA_HEADER) snd_soc_component_update_bits(component, RT5640_DUMMY2, 0x1100, 0x1100); |