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regmap: Lock the sync path, ensure we use the lockless _regmap_write()

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Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Dimitris Papastamos 2011-09-29 14:36:25 +01:00 • committed by Mark Brown
parent 5fcd256076
commit 13753a9088
4 changed files with 7 additions and 5 deletions
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4
drivers/base/regmap/regcache-indexed.c
View file

@ -45,8 +45,8 @@ static int regcache_indexed_sync(struct regmap *map)
int ret; int ret;
for (i = 0; i < map->num_reg_defaults; i++) { for (i = 0; i < map->num_reg_defaults; i++) {
ret = regmap_write(map, map->reg_defaults[i].reg, ret = _regmap_write(map, map->reg_defaults[i].reg,
map->reg_defaults[i].def); map->reg_defaults[i].def);
if (ret < 0) if (ret < 0)
return ret; return ret;
dev_dbg(map->dev, "Synced register %#x, value %#x\n", dev_dbg(map->dev, "Synced register %#x, value %#x\n",

2
drivers/base/regmap/regcache-lzo.c
View file

@ -339,7 +339,7 @@ static int regcache_lzo_sync(struct regmap *map)
if (ret) if (ret)
return ret; return ret;
map->cache_bypass = 1; map->cache_bypass = 1;
ret = regmap_write(map, i, val); ret = _regmap_write(map, i, val);
map->cache_bypass = 0; map->cache_bypass = 0;
if (ret) if (ret)
return ret; return ret;

2
drivers/base/regmap/regcache-rbtree.c
View file

@ -327,7 +327,7 @@ static int regcache_rbtree_sync(struct regmap *map)
if (val == def) if (val == def)
continue; continue;
map->cache_bypass = 1; map->cache_bypass = 1;
ret = regmap_write(map, regtmp, val); ret = _regmap_write(map, regtmp, val);
map->cache_bypass = 0; map->cache_bypass = 0;
if (ret) if (ret)
return ret; return ret;

4
drivers/base/regmap/regcache.c
View file

@ -230,6 +230,7 @@ int regcache_sync(struct regmap *map)
BUG_ON(!map->cache_ops); BUG_ON(!map->cache_ops);
mutex_lock(&map->lock);
dev_dbg(map->dev, "Syncing %s cache\n", dev_dbg(map->dev, "Syncing %s cache\n",
map->cache_ops->name); map->cache_ops->name);
name = map->cache_ops->name; name = map->cache_ops->name;
@ -242,7 +243,7 @@ int regcache_sync(struct regmap *map)
if (ret < 0) if (ret < 0)
goto out; goto out;
map->cache_bypass = 1; map->cache_bypass = 1;
ret = regmap_write(map, i, val); ret = _regmap_write(map, i, val);
map->cache_bypass = 0; map->cache_bypass = 0;
if (ret < 0) if (ret < 0)
goto out; goto out;
@ -254,6 +255,7 @@ int regcache_sync(struct regmap *map)
} }
out: out:
trace_regcache_sync(map->dev, name, "stop"); trace_regcache_sync(map->dev, name, "stop");
mutex_unlock(&map->lock);
return ret; return ret;
} }