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>

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 8766224..2d55b26 100644 (file)
--- 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);
 }