From: Marek Vasut Date: Mon, 19 Sep 2016 19:30:28 +0000 (+0200) Subject: ASoC: fsl_ssi: use flat regmap cache X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bfcf928d7604692668a7c33b783d05b8e3459d09;p=linux-beck.git ASoC: fsl_ssi: use flat regmap cache Same as commit ce492b3b8f99cf9d2f807ec22d8805c996a09503 Subject: drm/fsl-dcu: use flat regmap cache Using flat regmap cache instead of RB-tree to avoid the following lockdep warning on driver load: WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:2871 lockdep_trace_alloc+0x104/0x128 DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags)) The RB-tree regmap cache needs to allocate new space on first writes. However, allocations in an atomic context (e.g. when a spinlock is held) are not allowed. The function regmap_write calls map->lock, which acquires a spinlock in the fast_io case. Since the driver uses MMIO, the regmap bus of type regmap_mmio is being used which has fast_io set to true. Signed-off-by: Marek Vasut Acked-by: Nicolin Chen Signed-off-by: Mark Brown --- diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index bedec4a32581..50349437d961 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -182,7 +182,7 @@ static const struct regmap_config fsl_ssi_regconfig = { .volatile_reg = fsl_ssi_volatile_reg, .precious_reg = fsl_ssi_precious_reg, .writeable_reg = fsl_ssi_writeable_reg, - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_FLAT, }; struct fsl_ssi_soc_data {