diff options
| author | Dylan Reid <dgreid@chromium.org> | 2014-03-18 06:08:49 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-03-20 00:09:45 +0100 |
| commit | 591d14f00796a4250d800d316e3db1fea8a57e20 (patch) | |
| tree | d4dd85a397ed441ae610a50aef5ae7223955b56d /sound/soc/tegra/tegra20_i2s.c | |
| parent | Linus 3.14-rc1 (diff) | |
| download | linux-591d14f00796a4250d800d316e3db1fea8a57e20.tar.xz linux-591d14f00796a4250d800d316e3db1fea8a57e20.zip | |
ASoC: tegra: Use flat regcache
When using an rbtree cache, there can be allocations the first time a
register is accessed. This can cause an attempt to schedule while
atomic in the case that the regmap is using a spinlock. This could be
fixed by either initializing all the registers or using a flat cache.
The register maps for tegra30_ahub and tegra30_i2s are dense and don't
save much from using a tree so convert them to flat.
Tegra30 changes tested on Norrin, Tegra20 changes compile.
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/tegra/tegra20_i2s.c')
| -rw-r--r-- | sound/soc/tegra/tegra20_i2s.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/tegra/tegra20_i2s.c b/sound/soc/tegra/tegra20_i2s.c index 42c1f6bfaf2e..79a9932ffe6e 100644 --- a/sound/soc/tegra/tegra20_i2s.c +++ b/sound/soc/tegra/tegra20_i2s.c @@ -333,7 +333,7 @@ static const struct regmap_config tegra20_i2s_regmap_config = { .readable_reg = tegra20_i2s_wr_rd_reg, .volatile_reg = tegra20_i2s_volatile_reg, .precious_reg = tegra20_i2s_precious_reg, - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_FLAT, }; static int tegra20_i2s_platform_probe(struct platform_device *pdev) |