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ASoC: ad193x: Drop .volatile_reg implementation 

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>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Axel Lin 2015-10-20 16:56:11 +08:00 committed by Mark Brown
parent 355b27e181
commit 92b822a499
1 changed files with 0 additions and 6 deletions
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6
sound/soc/codecs/ad193x.c
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@ -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);