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>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 876622453cd8..2d55b261f1c5 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);
 }