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authorDimitris Papastamos <dp@opensource.wolfsonmicro.com>2011-09-29 14:36:28 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-09-30 13:57:47 +0100
commitac77a765cb6e3b5aa41c186ad9f37db7fdad7dbe (patch)
tree8a5c8df6dea4899dfff26eafe7027b1349be23a6 /drivers/base
parent6eb0f5e0154facfe4f0acdb9f474cde773319efc (diff)
regmap: Ensure we scream if we enable cache bypass/only at the same time
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/regmap/regcache.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 876622453cd..2d55b261f1c 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -281,6 +281,7 @@ EXPORT_SYMBOL_GPL(regcache_sync);
void regcache_cache_only(struct regmap *map, bool enable)
{
mutex_lock(&map->lock);
+ WARN_ON(map->cache_bypass && enable);
map->cache_only = enable;
mutex_unlock(&map->lock);
}
@@ -300,6 +301,7 @@ EXPORT_SYMBOL_GPL(regcache_cache_only);
void regcache_cache_bypass(struct regmap *map, bool enable)
{
mutex_lock(&map->lock);
+ WARN_ON(map->cache_only && enable);
map->cache_bypass = enable;
mutex_unlock(&map->lock);
}