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authorLars-Peter Clausen <lars@metafoo.de>2012-03-23 14:04:57 +0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-04-01 14:47:13 +0400
commit4b4e9e43fd210e0cd2a5d29357e7c000e13e08ae (patch)
treefe7d224017c0c6ce72751a16bf9f9b12037b248d /drivers/base/regmap/regcache-rbtree.c
parentdd775ae2549217d3ae09363e3edb305d0fa19928 (diff)
downloadlinux-4b4e9e43fd210e0cd2a5d29357e7c000e13e08ae.tar.xz
regmap: rbtree: Fix register default look-up in sync
The code currently passes the register offset in the current block to regcache_lookup_reg. This works fine as long as there is only one block and with base register of 0, but in all other cases it will look-up the default for a wrong register, which can cause unnecessary register writes. This patch fixes it by passing the actual register number to regcache_lookup_reg. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: <stable@vger.kernel.org>
Diffstat (limited to 'drivers/base/regmap/regcache-rbtree.c')
-rw-r--r--drivers/base/regmap/regcache-rbtree.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index 5157fa04c2f0..fb14a6343d4f 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -396,7 +396,7 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min,
map->cache_word_size);
/* Is this the hardware default? If so skip. */
- ret = regcache_lookup_reg(map, i);
+ ret = regcache_lookup_reg(map, regtmp);
if (ret >= 0 && val == map->reg_defaults[ret].def)
continue;