During S3 test, the following error was observed:
[ 726.174237] i2c_designware i2c_designware.0: platform_pm_resume+0x0/0x3d returned 0 after 0 usecs
[ 726.184187] max98373 i2c-MX98373:00: calling max98373_resume+0x0/0x30 [snd_soc_max98373] @ 12698, parent: i2c-11
[ 726.195589] max98373 i2c-MX98373:00: Reset command failed. (ret:-16)
When calling regmap_update_bits(), since map->reg_update_bits is NULL,
_regmap_read() is entered with the following logic:
if (!map->cache_bypass) {
ret = regcache_read(map, reg, val);
if (ret == 0)
return 0;
}
if (map->cache_only)
return -EBUSY;
regcache_read() hits -EINVAL because MAX98373_R2000_SW_RESET is volatile,
as map->cache_only is set by codec suspend, thus -EBUSY is returned.
Fix by moving max98373_reset() after cache_only set to false in max98373_resume().
Signed-off-by: Yong Zhi <yong.zhi@xxxxxxxxx>
---
sound/soc/codecs/max98373.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/codecs/max98373.c b/sound/soc/codecs/max98373.c
index cae1def8902d..96718e3a1ad0 100644
--- a/sound/soc/codecs/max98373.c
+++ b/sound/soc/codecs/max98373.c
@@ -850,8 +850,8 @@ static int max98373_resume(struct device *dev)
{
struct max98373_priv *max98373 = dev_get_drvdata(dev);
- max98373_reset(max98373, dev);
regcache_cache_only(max98373->regmap, false);
+ max98373_reset(max98373, dev);
regcache_sync(max98373->regmap);
return 0;
}
--
2.7.4
