From: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
[ Upstream commit cf0418cd06ce42fcf35beb33e315b5a77e596926 ]
The rt711 jack detection properties are set from the machine drivers during the card probe, as done in other ASoC examples.
KASAN reports a use-after-free error when unbinding drivers due to a confusing sequence between the ACPI core, the device core and the SoundWire device cleanups.
Rather than fixing this sequence, follow the recommendation to have the same caller add and remove properties, add an explicit device_remove_properties() in the card .remove() callback.
In future patches the use of device_add/remove_properties will be replaced by a direct handling of a swnode, but the sequence will remain the same.
Signed-off-by: Bard Liao yung-chuan.liao@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Kai Vehmanen kai.vehmanen@linux.intel.com Link: https://lore.kernel.org/r/20200717211337.31956-3-pierre-louis.bossart@linux.... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/intel/boards/sof_sdw.c | 1 + sound/soc/intel/boards/sof_sdw_common.h | 1 + sound/soc/intel/boards/sof_sdw_rt711.c | 15 +++++++++++++++ 3 files changed, 17 insertions(+)
diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c index 1bfd9613449e9..95a119a2d354e 100644 --- a/sound/soc/intel/boards/sof_sdw.c +++ b/sound/soc/intel/boards/sof_sdw.c @@ -184,6 +184,7 @@ static struct sof_sdw_codec_info codec_info_list[] = { .direction = {true, true}, .dai_name = "rt711-aif1", .init = sof_sdw_rt711_init, + .exit = sof_sdw_rt711_exit, }, { .id = 0x1308, diff --git a/sound/soc/intel/boards/sof_sdw_common.h b/sound/soc/intel/boards/sof_sdw_common.h index 69b363b8a6869..fdd2385049e1e 100644 --- a/sound/soc/intel/boards/sof_sdw_common.h +++ b/sound/soc/intel/boards/sof_sdw_common.h @@ -84,6 +84,7 @@ int sof_sdw_rt711_init(const struct snd_soc_acpi_link_adr *link, struct snd_soc_dai_link *dai_links, struct sof_sdw_codec_info *info, bool playback); +int sof_sdw_rt711_exit(struct device *dev, struct snd_soc_dai_link *dai_link);
/* RT700 support */ int sof_sdw_rt700_init(const struct snd_soc_acpi_link_adr *link, diff --git a/sound/soc/intel/boards/sof_sdw_rt711.c b/sound/soc/intel/boards/sof_sdw_rt711.c index d4d75c8dc6b78..0cb9f1c1f8676 100644 --- a/sound/soc/intel/boards/sof_sdw_rt711.c +++ b/sound/soc/intel/boards/sof_sdw_rt711.c @@ -133,6 +133,21 @@ static int rt711_rtd_init(struct snd_soc_pcm_runtime *rtd) return ret; }
+int sof_sdw_rt711_exit(struct device *dev, struct snd_soc_dai_link *dai_link) +{ + struct device *sdw_dev; + + sdw_dev = bus_find_device_by_name(&sdw_bus_type, NULL, + dai_link->codecs[0].name); + if (!sdw_dev) + return -EINVAL; + + device_remove_properties(sdw_dev); + put_device(sdw_dev); + + return 0; +} + int sof_sdw_rt711_init(const struct snd_soc_acpi_link_adr *link, struct snd_soc_dai_link *dai_links, struct sof_sdw_codec_info *info,