From: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
stable inclusion from stable-5.10.50 commit dc152164128717fb0828a268f4b7fe8c5e821e85 bugzilla: 174522 https://gitee.com/openeuler/kernel/issues/I4DNFY
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit bf881170311ea74ff30c3be0be8fb097132ce696 ]
The intent of the status check on resume was to verify if a SoundWire peripheral reported ATTACHED before waiting for the initialization to complete. This is required to avoid timeouts that will happen with 'ghost' devices that are exposed in the platform firmware but are not populated in hardware.
Unfortunately we used 'hw_init' instead of 'first_hw_init'. Due to another error, the resume operation never timed out, but the volume settings were not properly restored.
This patch renames the status flag to 'first_hw_init' for consistency with other drivers.
BugLink: https://github.com/thesofproject/linux/issues/2637 Fixes: 56a5b7910e96 ('ASoC: codecs: max98373: add SoundWire support') Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Guennadi Liakhovetski guennadi.liakhovetski@linux.intel.com Reviewed-by: Bard Liao bard.liao@intel.com Link: https://lore.kernel.org/r/20210607222239.582139-3-pierre-louis.bossart@linux... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- sound/soc/codecs/max98373-sdw.c | 12 ++++++------ sound/soc/codecs/max98373.h | 2 +- 2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/sound/soc/codecs/max98373-sdw.c b/sound/soc/codecs/max98373-sdw.c index 14fd2f9a0bf3..39afa011f0e2 100644 --- a/sound/soc/codecs/max98373-sdw.c +++ b/sound/soc/codecs/max98373-sdw.c @@ -258,7 +258,7 @@ static __maybe_unused int max98373_resume(struct device *dev) struct max98373_priv *max98373 = dev_get_drvdata(dev); unsigned long time;
- if (!max98373->hw_init) + if (!max98373->first_hw_init) return 0;
if (!slave->unattach_request) @@ -349,7 +349,7 @@ static int max98373_io_init(struct sdw_slave *slave) struct device *dev = &slave->dev; struct max98373_priv *max98373 = dev_get_drvdata(dev);
- if (max98373->pm_init_once) { + if (max98373->first_hw_init) { regcache_cache_only(max98373->regmap, false); regcache_cache_bypass(max98373->regmap, true); } @@ -357,7 +357,7 @@ static int max98373_io_init(struct sdw_slave *slave) /* * PM runtime is only enabled when a Slave reports as Attached */ - if (!max98373->pm_init_once) { + if (!max98373->first_hw_init) { /* set autosuspend parameters */ pm_runtime_set_autosuspend_delay(dev, 3000); pm_runtime_use_autosuspend(dev); @@ -449,12 +449,12 @@ static int max98373_io_init(struct sdw_slave *slave) regmap_write(max98373->regmap, MAX98373_R20B5_BDE_EN, 1); regmap_write(max98373->regmap, MAX98373_R20E2_LIMITER_EN, 1);
- if (max98373->pm_init_once) { + if (max98373->first_hw_init) { regcache_cache_bypass(max98373->regmap, false); regcache_mark_dirty(max98373->regmap); }
- max98373->pm_init_once = true; + max98373->first_hw_init = true; max98373->hw_init = true;
pm_runtime_mark_last_busy(dev); @@ -773,7 +773,7 @@ static int max98373_init(struct sdw_slave *slave, struct regmap *regmap) max98373_slot_config(dev, max98373);
max98373->hw_init = false; - max98373->pm_init_once = false; + max98373->first_hw_init = false;
/* codec registration */ ret = devm_snd_soc_register_component(dev, &soc_codec_dev_max98373_sdw, diff --git a/sound/soc/codecs/max98373.h b/sound/soc/codecs/max98373.h index 4ab29b9d51c7..010f6bb21e9a 100644 --- a/sound/soc/codecs/max98373.h +++ b/sound/soc/codecs/max98373.h @@ -215,7 +215,7 @@ struct max98373_priv { /* variables to support soundwire */ struct sdw_slave *slave; bool hw_init; - bool pm_init_once; + bool first_hw_init; int slot; unsigned int rx_mask; };