From 6e6ace00a045251bd172b9b9c2379857bbff3dc7 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sun, 9 Oct 2011 13:23:31 +0100 Subject: 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 Acked-by: Dimitris Papastamos --- drivers/base/regmap/regcache-rbtree.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/base/regmap/regcache-rbtree.c') 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, *value = regcache_rbtree_get_register(rbnode, reg_tmp, map->cache_word_size); } else { - /* uninitialized registers default to 0 */ - *value = 0; + return -ENOENT; } return 0; -- cgit v1.2.1