From dcd2d1f78664fdc75eadaaf65257834e24383d01 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 16 Jun 2016 14:34:30 +0200 Subject: [PATCH] ASoC: ak4613: Enable cache usage to fix crashes on resume During system resume: kernel BUG at drivers/base/regmap/regcache.c:347! ... PC is at regcache_sync+0x1c/0x128 LR is at ak4613_resume+0x28/0x34 The ak4613 driver is using a regmap cache sync to restore the configuration of the chip on resume but does not actually define a register cache which means that the resume 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 Signed-off-by: Mark Brown --- sound/soc/codecs/ak4613.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/codecs/ak4613.c b/sound/soc/codecs/ak4613.c index 33d2f2e10e24..5013d2ba0c10 100644 --- a/sound/soc/codecs/ak4613.c +++ b/sound/soc/codecs/ak4613.c @@ -146,6 +146,7 @@ static const struct regmap_config ak4613_regmap_cfg = { .max_register = 0x16, .reg_defaults = ak4613_reg, .num_reg_defaults = ARRAY_SIZE(ak4613_reg), + .cache_type = REGCACHE_RBTREE, }; static const struct of_device_id ak4613_of_match[] = { -- 2.20.1