regmap: Use async I/O during cache sync
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>
This commit is contained in:
Родитель
1a25f26138
Коммит
affbe886e7
drivers/base/regmap
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@ -307,6 +307,8 @@ int regcache_sync(struct regmap *map)
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if (!map->cache_dirty)
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goto out;
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map->async = true;
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/* Apply any patch first */
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map->cache_bypass = 1;
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for (i = 0; i < map->patch_regs; i++) {
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@ -332,11 +334,15 @@ int regcache_sync(struct regmap *map)
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map->cache_dirty = false;
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out:
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trace_regcache_sync(map->dev, name, "stop");
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/* Restore the bypass state */
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map->async = false;
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map->cache_bypass = bypass;
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map->unlock(map->lock_arg);
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regmap_async_complete(map);
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trace_regcache_sync(map->dev, name, "stop");
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return ret;
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}
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EXPORT_SYMBOL_GPL(regcache_sync);
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@ -375,17 +381,23 @@ int regcache_sync_region(struct regmap *map, unsigned int min,
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if (!map->cache_dirty)
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goto out;
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map->async = true;
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if (map->cache_ops->sync)
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ret = map->cache_ops->sync(map, min, max);
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else
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ret = regcache_default_sync(map, min, max);
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out:
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trace_regcache_sync(map->dev, name, "stop region");
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/* Restore the bypass state */
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map->cache_bypass = bypass;
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map->async = false;
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map->unlock(map->lock_arg);
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regmap_async_complete(map);
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trace_regcache_sync(map->dev, name, "stop region");
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return ret;
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}
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EXPORT_SYMBOL_GPL(regcache_sync_region);
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