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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2022-06-06 15:37:50 -0500
committerMark Brown <broonie@kernel.org>2022-06-24 16:21:33 +0100
commit0484271ab0ce50649329fa9dc23c50853c5b26a4 (patch)
tree16c98797366fda4531ef6f68dba0cc774c690d90 /sound
parent08bb5dc6ce02374169213cea772b1c297eaf32d5 (diff)
downloadlinux-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.c2
-rw-r--r--sound/soc/codecs/rt711-sdca.c2
-rw-r--r--sound/soc/codecs/rt711.c2
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)) {