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regmap: Ensure we scream if we enable cache bypass/only at the same time

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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 14:36:28 +01:00
committed by Mark Brown
parent 6eb0f5e015
commit ac77a765cb
1 changed files with 2 additions and 0 deletions
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drivers/base/regmap/regcache.c
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@@ -281,6 +281,7 @@ EXPORT_SYMBOL_GPL(regcache_sync);
void regcache_cache_only(struct regmap *map, bool enable) void regcache_cache_only(struct regmap *map, bool enable)
{ {
mutex_lock(&map->lock); mutex_lock(&map->lock);
WARN_ON(map->cache_bypass && enable);
map->cache_only = enable; map->cache_only = enable;
mutex_unlock(&map->lock); mutex_unlock(&map->lock);
} }
@@ -300,6 +301,7 @@ EXPORT_SYMBOL_GPL(regcache_cache_only);
void regcache_cache_bypass(struct regmap *map, bool enable) void regcache_cache_bypass(struct regmap *map, bool enable)
{ {
mutex_lock(&map->lock); mutex_lock(&map->lock);
WARN_ON(map->cache_only && enable);
map->cache_bypass = enable; map->cache_bypass = enable;
mutex_unlock(&map->lock); mutex_unlock(&map->lock);
} }