[PATCH 4.2.y-ckt 207/305] ASoC: wm8974: set cache type for regmap

From: Kamal Mostafa
Date: Fri Jan 15 2016 - 19:37:15 EST

4.2.8-ckt2 -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: Kamal Mostafa <kamal@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 33b16a7..57a8bae 100644
--- a/sound/soc/codecs/wm8974.c
+++ b/sound/soc/codecs/wm8974.c
@@ -574,6 +574,7 @@ 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)