The maple tree register cache is based on a much more modern data structure than the rbtree cache and makes optimisation choices which are probably more appropriate for modern systems than those made by the rbtree cache. Signed-off-by: Bo Liu <liubo03@xxxxxxxxxx> --- drivers/mfd/lochnagar-i2c.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mfd/lochnagar-i2c.c b/drivers/mfd/lochnagar-i2c.c index 0b76fcccd0bd..6c930c57f2e2 100644 --- a/drivers/mfd/lochnagar-i2c.c +++ b/drivers/mfd/lochnagar-i2c.c @@ -70,7 +70,7 @@ static const struct regmap_config lochnagar1_i2c_regmap = { .use_single_read = true, .use_single_write = true, - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_MAPLE, }; static const struct reg_sequence lochnagar1_patch[] = { @@ -163,7 +163,7 @@ static const struct regmap_config lochnagar2_i2c_regmap = { .readable_reg = lochnagar2_readable_register, .volatile_reg = lochnagar2_volatile_register, - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_MAPLE, }; static const struct reg_sequence lochnagar2_patch[] = { -- 2.18.2