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/ac100.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/ac100.c b/drivers/mfd/ac100.c index 6d49d7fb5f14..8f47c392cbd1 100644 --- a/drivers/mfd/ac100.c +++ b/drivers/mfd/ac100.c @@ -72,7 +72,7 @@ static const struct regmap_config ac100_regmap_config = { .wr_table = &ac100_writeable_table, .volatile_table = &ac100_volatile_table, .max_register = AC100_RTC_GP(15), - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_MAPLE, }; static struct mfd_cell ac100_cells[] = { -- 2.18.2