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regmap: Allow rbtree to cache zero default values

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Ensure that when we start up in cache only mode we can store defaults of
zero, otherwise if the hardware is unavailable we won't be able to read.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2011-10-09 14:30:02 +01:00
parent 04e016adca
commit e42c5a9a42
1 changed files with 0 additions and 3 deletions
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3
drivers/base/regmap/regcache-rbtree.c
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@ -252,9 +252,6 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
regcache_rbtree_set_register(rbnode, reg_tmp, value,
map->cache_word_size);
} else {
/* bail out early, no need to create the rbnode yet */
if (!value)
return 0;
/* look for an adjacent register to the one we are about to add */
for (node = rb_first(&rbtree_ctx->root); node;
node = rb_next(node)) {