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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-10-09 08:23:31 -0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-10-10 05:24:03 -0400
commit6e6ace00a045251bd172b9b9c2379857bbff3dc7 (patch)
tree63a4d6686b3955ca16e7727883445209de67074b /drivers/base/regmap/regcache-rbtree.c
parentf094fea68f0575286c55c06141cc89ffd0049024 (diff)
regmap: Return a sensible error code if we fail to read the cache
If a register isn't cached then let callers know that so they can fall back or error handle appropriately. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base/regmap/regcache-rbtree.c')
-rw-r--r--drivers/base/regmap/regcache-rbtree.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index 40f23dd8478c..887dbce63aff 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -193,8 +193,7 @@ static int regcache_rbtree_read(struct regmap *map,
193 *value = regcache_rbtree_get_register(rbnode, reg_tmp, 193 *value = regcache_rbtree_get_register(rbnode, reg_tmp,
194 map->cache_word_size); 194 map->cache_word_size);
195 } else { 195 } else {
196 /* uninitialized registers default to 0 */ 196 return -ENOENT;
197 *value = 0;
198 } 197 }
199 198
200 return 0; 199 return 0;