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authorMarek Vasut <marex@denx.de>2016-09-19 21:30:26 +0200
committerMark Brown <broonie@kernel.org>2016-09-20 18:55:22 +0100
commit0effb8651ee3b00513fbba9ef3912bbcbbd38af6 (patch)
tree0f1bec60cc7858e8e69c9f6dfbf5ef9f94f7ad15 /sound/soc/fsl
parentb413886886b9a8f845f7d1a5adafa0ca573d3828 (diff)
ASoC: fsl_esai: 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 <marex@denx.de> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/fsl')
-rw-r--r--sound/soc/fsl/fsl_esai.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c
index e927955ba982..38bfd46f4ad8 100644
--- a/sound/soc/fsl/fsl_esai.c
+++ b/sound/soc/fsl/fsl_esai.c
@@ -781,7 +781,7 @@ static const struct regmap_config fsl_esai_regmap_config = {
.readable_reg = fsl_esai_readable_reg,
.volatile_reg = fsl_esai_volatile_reg,
.writeable_reg = fsl_esai_writeable_reg,
- .cache_type = REGCACHE_RBTREE,
+ .cache_type = REGCACHE_FLAT,
};
static int fsl_esai_probe(struct platform_device *pdev)