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 0cfce9999c894b83bef22d09ae6320c7ce88e8b8..21a6727bfc2334853a433de78ddec900cd7a78d0 100644 (file)
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3722,6 +3722,9 @@ 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,