A simple bug that's been lurking for a while but not terribly visible

since a high proportion of chips have no register 0 so the normal
 failure is that we end up doing a bit of extra I/O.
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Merge tag 'regmap-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull a single regmap fix from Mark Brown:
 "A simple bug that's been lurking for a while but not terribly visible
  since a high proportion of chips have no register 0 so the normal
  failure is that we end up doing a bit of extra I/O."

* tag 'regmap-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: rbtree: Fix register default look-up in sync

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;