[PATCH 2/2] ASoC: ad193x: Drop .volatile_reg implementation

[Axel Lin <axel.lin@ingics.com>]

adau193x_reg_volatile() always return false.
This seems pointless because current code uses REGCACHE_NONE cache_type
which is supposed to be volatile.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
 sound/soc/codecs/ad193x.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/sound/soc/codecs/ad193x.c b/sound/soc/codecs/ad193x.c
index 76d7966..3a3f3f2 100644
--- a/sound/soc/codecs/ad193x.c
+++ b/sound/soc/codecs/ad193x.c
@@ -418,14 +418,8 @@ static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
 	.num_dapm_routes = ARRAY_SIZE(audio_paths),
 };
 
-static bool adau193x_reg_volatile(struct device *dev, unsigned int reg)
-{
-	return false;
-}
-
 const struct regmap_config ad193x_regmap_config = {
 	.max_register = AD193X_NUM_REGS - 1,
-	.volatile_reg = adau193x_reg_volatile,
 };
 EXPORT_SYMBOL_GPL(ad193x_regmap_config);
 
-- 
2.1.4