ASoC: codecs: Fix error handling in pm4125 audio codec driver

Browse source

pm4125_bind() acquires references through pm4125_sdw_device_get() but
fails to release them in error paths and during normal unbind
operations. This could result in reference count leaks, preventing
proper cleanup and potentially causing resource exhaustion over
multiple bind/unbind cycles.

Calling path: pm4125_sdw_device_get() -> bus_find_device_by_of_node()
-> bus_find_device() -> get_device.

Found by code review.

Cc: stable@vger.kernel.org
Fixes: 8ad5294849 ("ASoC: codecs: add new pm4125 audio codec driver")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://patch.msgid.link/20251116033716.29369-1-make24@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>

...

This commit is contained in:

Ma Ke 2025-11-16 11:37:16 +08:00 • committed by Mark Brown

parent 578ccfe344

commit 2196e8172b

No known key found for this signature in database

GPG key ID: 24D68B725D5487D0

1 changed files with 18 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

21

sound/soc/codecs/pm4125.c

View file