ASoC: wm8962: Redo early init of the part on resume

commit e4dd76788c7e5b27165890d712c8c4f6f0abd645 upstream.

Ensure robust startup of the part by going through the reset procedure
prior to resyncing the full register cache, avoiding potential intermittent
faults in some designs.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 15d467ff91b496b6bb72dfbdd5eb4c9bfb5500fa..08850f8fdb589d7cf4c9851f8cab9c399874c0af 100644 (file)
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3710,6 +3710,9 @@ static int wm8962_runtime_resume(struct device *dev)
        }
 
        regcache_cache_only(wm8962->regmap, false);
+
+       wm8962_reset(wm8962);
+
        regcache_sync(wm8962->regmap);
 
        regmap_update_bits(wm8962->regmap, WM8962_ANTI_POP,