6.6-stable review patch. If anyone has any objections, please let me know.
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From: Charles Keepax ckeepax@opensource.cirrus.com
[ Upstream commit 28809aaeabdf2c01ffe597553146527d1fba3589 ]
When adding CODECs to a DAI link, the code should stop processing more CODECs when the expected number of CODECs are discovered. This fixes a small corner case issue introduced when support for different devices on the same SoundWire link was added. In the case of aggregated devices everything is fine, as all devices intended for the DAI link will be marked with the same group and any not intended for that DAI are skipped by the group check. However for non-aggregated devices the group check is bypassed and the current code does not stop after it has found the first device. Meaning if additional non-aggregated devices are present on the same SoundWire link they will be erroneously added into the DAI link.
Fix this issue, and provide a small optimisation by ceasing to process devices once we have reached the required number of devices for the current DAI link.
Fixes: 317dcdecaf7a ("ASoC: intel: sof_sdw: Allow different devices on the same link") Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com Reviewed-by: Bard Liao yung-chuan.liao@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Link: https://lore.kernel.org/r/20231019173411.166759-2-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 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c index 842649501e303..47d22cab5af62 100644 --- a/sound/soc/intel/boards/sof_sdw.c +++ b/sound/soc/intel/boards/sof_sdw.c @@ -1374,7 +1374,7 @@ static int create_sdw_dailink(struct snd_soc_card *card, int *link_index, continue;
/* j reset after loop, adr_index only applies to first link */ - for (; j < adr_link_next->num_adr; j++) { + for (; j < adr_link_next->num_adr && codec_dlc_index < codec_num; j++) { const struct snd_soc_acpi_endpoint *endpoints;
endpoints = adr_link_next->adr_d[j].endpoints;