diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2022-06-06 15:37:50 -0500 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-06-24 16:21:33 +0100 |
| commit | 0484271ab0ce50649329fa9dc23c50853c5b26a4 (patch) | |
| tree | 16c98797366fda4531ef6f68dba0cc774c690d90 /sound | |
| parent | 08bb5dc6ce02374169213cea772b1c297eaf32d5 (diff) | |
| download | linux-0484271ab0ce50649329fa9dc23c50853c5b26a4.tar.bz2 | |
ASoC: rt7*-sdw: harden jack_detect_handler
Realtek headset codec drivers typically check if the card is
instantiated before proceeding with the jack detection.
The rt700, rt711 and rt711-sdca are however missing a check on the
card pointer, which can lead to NULL dereferences encountered in
driver bind/unbind tests.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220606203752.144159-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/rt700.c | 2 | ||||
| -rw-r--r-- | sound/soc/codecs/rt711-sdca.c | 2 | ||||
| -rw-r--r-- | sound/soc/codecs/rt711.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/sound/soc/codecs/rt700.c b/sound/soc/codecs/rt700.c index af32295fa9b9..4a99d5f4706f 100644 --- a/sound/soc/codecs/rt700.c +++ b/sound/soc/codecs/rt700.c @@ -162,7 +162,7 @@ static void rt700_jack_detect_handler(struct work_struct *work) if (!rt700->hs_jack) return; - if (!rt700->component->card->instantiated) + if (!rt700->component->card || !rt700->component->card->instantiated) return; reg = RT700_VERB_GET_PIN_SENSE | RT700_HP_OUT; diff --git a/sound/soc/codecs/rt711-sdca.c b/sound/soc/codecs/rt711-sdca.c index af73bcb4560a..93b36f05cb56 100644 --- a/sound/soc/codecs/rt711-sdca.c +++ b/sound/soc/codecs/rt711-sdca.c @@ -294,7 +294,7 @@ static void rt711_sdca_jack_detect_handler(struct work_struct *work) if (!rt711->hs_jack) return; - if (!rt711->component->card->instantiated) + if (!rt711->component->card || !rt711->component->card->instantiated) return; /* SDW_SCP_SDCA_INT_SDCA_0 is used for jack detection */ diff --git a/sound/soc/codecs/rt711.c b/sound/soc/codecs/rt711.c index 1e35ba433a7e..2f445b27305a 100644 --- a/sound/soc/codecs/rt711.c +++ b/sound/soc/codecs/rt711.c @@ -242,7 +242,7 @@ static void rt711_jack_detect_handler(struct work_struct *work) if (!rt711->hs_jack) return; - if (!rt711->component->card->instantiated) + if (!rt711->component->card || !rt711->component->card->instantiated) return; if (pm_runtime_status_suspended(rt711->slave->dev.parent)) { |