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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2022-06-06 15:37:52 -0500
committerMark Brown <broonie@kernel.org>2022-06-24 16:21:35 +0100
commit40737057b48f1b4db67b0d766b95c87ba8fc5e03 (patch)
treeb06c9046b5411b85f730d9992737ef47e685d08b /sound/soc/codecs/rt711.c
parentASoC: codecs: rt700/rt711/rt711-sdca: initialize workqueues in probe (diff)
downloadlinux-dev-40737057b48f1b4db67b0d766b95c87ba8fc5e03.tar.xz
linux-dev-40737057b48f1b4db67b0d766b95c87ba8fc5e03.zip
ASoC: codecs: rt700/rt711/rt711-sdca: resume bus/codec in .set_jack_detect
The .set_jack_detect() codec component callback is invoked during card registration, which happens when the machine driver is probed. The issue is that this callback can race with the bus suspend/resume, and IO timeouts can happen. This can be reproduced very easily if the machine driver is 'blacklisted' and manually probed after the bus suspends. The bus and codec need to be re-initialized using pm_runtime helpers. Previous contributions tried to make sure accesses to the bus during the .set_jack_detect() component callback only happen when the bus is active. This was done by changing the regcache status on a component remove. This is however a layering violation, the regcache status should only be modified on device probe, suspend and resume. The component probe/remove should not modify how the device regcache is handled. This solution also didn't handle all the possible race conditions, and the RT700 headset codec was not handled. This patch tries to resume the codec device before handling the jack initializations. In case the codec has not yet been initialized, pm_runtime may not be enabled yet, so we don't squelch the -EACCES error code and only stop the jack information. When the codec reports as attached, the jack initialization will proceed as usual. BugLink: https://github.com/thesofproject/linux/issues/3643 Fixes: 7ad4d237e7c4a ('ASoC: rt711-sdca: Add RT711 SDCA vendor-specific driver') Fixes: 899b12542b089 ('ASoC: rt711: add snd_soc_component remove callback') 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/20220606203752.144159-8-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to '')
-rw-r--r--sound/soc/codecs/rt711.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/sound/soc/codecs/rt711.c b/sound/soc/codecs/rt711.c
index 5709a6bbe8fc..9df800abfc2d 100644
--- a/sound/soc/codecs/rt711.c
+++ b/sound/soc/codecs/rt711.c
@@ -457,17 +457,27 @@ static int rt711_set_jack_detect(struct snd_soc_component *component,
struct snd_soc_jack *hs_jack, void *data)
{
struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
+ int ret;
rt711->hs_jack = hs_jack;
- if (!rt711->hw_init) {
- dev_dbg(&rt711->slave->dev,
- "%s hw_init not ready yet\n", __func__);
+ ret = pm_runtime_resume_and_get(component->dev);
+ if (ret < 0) {
+ if (ret != -EACCES) {
+ dev_err(component->dev, "%s: failed to resume %d\n", __func__, ret);
+ return ret;
+ }
+
+ /* pm_runtime not enabled yet */
+ dev_dbg(component->dev, "%s: skipping jack init for now\n", __func__);
return 0;
}
rt711_jack_init(rt711);
+ pm_runtime_mark_last_busy(component->dev);
+ pm_runtime_put_autosuspend(component->dev);
+
return 0;
}
@@ -932,13 +942,6 @@ static int rt711_probe(struct snd_soc_component *component)
return 0;
}
-static void rt711_remove(struct snd_soc_component *component)
-{
- struct rt711_priv *rt711 = snd_soc_component_get_drvdata(component);
-
- regcache_cache_only(rt711->regmap, true);
-}
-
static const struct snd_soc_component_driver soc_codec_dev_rt711 = {
.probe = rt711_probe,
.set_bias_level = rt711_set_bias_level,
@@ -949,7 +952,6 @@ static const struct snd_soc_component_driver soc_codec_dev_rt711 = {
.dapm_routes = rt711_audio_map,
.num_dapm_routes = ARRAY_SIZE(rt711_audio_map),
.set_jack = rt711_set_jack_detect,
- .remove = rt711_remove,
.endianness = 1,
};