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| author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2011-09-29 14:36:25 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-09-30 13:57:47 +0100 |
| commit | 13753a9088af23c61e2f5c10a8f3ea136d8ebab5 (patch) | |
| tree | 44c7a109f98995800f55ffd8b0cf0cefca158caf /drivers/base/regmap/regcache.c | |
| parent | 5fcd2560767cead8f0c741340e132c5417d9f73b (diff) | |
| download | blackbird-op-linux-13753a9088af23c61e2f5c10a8f3ea136d8ebab5.tar.gz blackbird-op-linux-13753a9088af23c61e2f5c10a8f3ea136d8ebab5.zip | |
regmap: Lock the sync path, ensure we use the lockless _regmap_write()
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base/regmap/regcache.c')
| -rw-r--r-- | drivers/base/regmap/regcache.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index 2caf6e49c389..59e432c0163d 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -230,6 +230,7 @@ int regcache_sync(struct regmap *map) BUG_ON(!map->cache_ops); + mutex_lock(&map->lock); dev_dbg(map->dev, "Syncing %s cache\n", map->cache_ops->name); name = map->cache_ops->name; @@ -242,7 +243,7 @@ int regcache_sync(struct regmap *map) if (ret < 0) goto out; map->cache_bypass = 1; - ret = regmap_write(map, i, val); + ret = _regmap_write(map, i, val); map->cache_bypass = 0; if (ret < 0) goto out; @@ -254,6 +255,7 @@ int regcache_sync(struct regmap *map) } out: trace_regcache_sync(map->dev, name, "stop"); + mutex_unlock(&map->lock); return ret; } |
