From: Geert Uytterhoeven Date: Thu, 16 Jun 2016 12:34:32 +0000 (+0200) Subject: ASoC: wm8940: Enable cache usage to fix crashes on resume X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=50c7a0ef2d97e56c7ce2f1ea5fe1d8e25aadc1bb;p=linux.git ASoC: wm8940: Enable cache usage to fix crashes on resume The wm8940 driver is using a regmap cache sync to restore the configuration of the chip when switching from OFF to STANDBY, but does not actually define a register cache which means that the restore is never going to work and we trigger asserts in regmap. Fix this by enabling caching. Based on commit d3030d11961a8c10 ("ASoC: ak4642: Enable cache usage to fix crashes on resume") by Mark Brown . Signed-off-by: Geert Uytterhoeven Acked-by: Charles Keepax Signed-off-by: Mark Brown --- diff --git a/sound/soc/codecs/wm8940.c b/sound/soc/codecs/wm8940.c index f6f9395ea38ef..1c600819f7689 100644 --- a/sound/soc/codecs/wm8940.c +++ b/sound/soc/codecs/wm8940.c @@ -743,6 +743,7 @@ static const struct regmap_config wm8940_regmap = { .max_register = WM8940_MONOMIX, .reg_defaults = wm8940_reg_defaults, .num_reg_defaults = ARRAY_SIZE(wm8940_reg_defaults), + .cache_type = REGCACHE_RBTREE, .readable_reg = wm8940_readable_register, .volatile_reg = wm8940_volatile_register,