From: Mark Brown broonie@linaro.org
Try to speed up I/O a little by not synchronising until we are finished scheduling writes. A brief survey of existing users suggests we have none that would currently benefit from an async cache sync.
Signed-off-by: Mark Brown broonie@linaro.org --- drivers/base/regmap/regcache.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index a36112a..d4dd771 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -307,6 +307,8 @@ int regcache_sync(struct regmap *map) if (!map->cache_dirty) goto out;
+ map->async = true; + /* Apply any patch first */ map->cache_bypass = 1; for (i = 0; i < map->patch_regs; i++) { @@ -332,11 +334,15 @@ int regcache_sync(struct regmap *map) map->cache_dirty = false;
out: - trace_regcache_sync(map->dev, name, "stop"); /* Restore the bypass state */ + map->async = false; map->cache_bypass = bypass; map->unlock(map->lock_arg);
+ regmap_async_complete(map); + + trace_regcache_sync(map->dev, name, "stop"); + return ret; } EXPORT_SYMBOL_GPL(regcache_sync); @@ -375,17 +381,23 @@ int regcache_sync_region(struct regmap *map, unsigned int min, if (!map->cache_dirty) goto out;
+ map->async = true; + if (map->cache_ops->sync) ret = map->cache_ops->sync(map, min, max); else ret = regcache_default_sync(map, min, max);
out: - trace_regcache_sync(map->dev, name, "stop region"); /* Restore the bypass state */ map->cache_bypass = bypass; + map->async = false; map->unlock(map->lock_arg);
+ regmap_async_complete(map); + + trace_regcache_sync(map->dev, name, "stop region"); + return ret; } EXPORT_SYMBOL_GPL(regcache_sync_region);