[PATCH 3.16.y-ckt 098/128] ASoC: wm8974: set cache type for regmap

From: Luis Henriques
Date: Sun Jan 24 2016 - 17:05:10 EST

3.16.7-ckt23 -stable review patch. If anyone has any objections, please let me know.


From: Mans Rullgard <mans@xxxxxxxxx>

commit 1ea5998afe903384ddc16391d4c023cd4c867bea upstream.

Attempting to use this codec driver triggers a BUG() in regcache_sync()
since no cache type is set. The register map of this device is fairly
small and has few holes so a flat cache is suitable.

Signed-off-by: Mans Rullgard <mans@xxxxxxxxx>
Acked-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
sound/soc/codecs/wm8974.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/sound/soc/codecs/wm8974.c b/sound/soc/codecs/wm8974.c
index 0627c56fa44e..c2248db97fc4 100644
--- a/sound/soc/codecs/wm8974.c
+++ b/sound/soc/codecs/wm8974.c
@@ -587,6 +587,7 @@ static const struct regmap_config wm8974_regmap = {
.max_register = WM8974_MONOMIX,
.reg_defaults = wm8974_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm8974_reg_defaults),
+ .cache_type = REGCACHE_FLAT,

static int wm8974_probe(struct snd_soc_codec *codec)