From: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Date: Thu, 29 Sep 2011 13:36:28 +0000 (+0100)
Subject: regmap: Ensure we scream if we enable cache bypass/only at the same time
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ac77a765cb6e3b5aa41c186ad9f37db7fdad7dbe;p=mv-sheeva.git

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 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);
 }