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. In v6.5 it has also acquired the ability to generate multi-register writes in sync operations, bringing performance up to parity with the rbtree cache there.
Update the wm8991 driver to use the more modern data structure.
Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/wm8991.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/codecs/wm8991.c b/sound/soc/codecs/wm8991.c index 8cb2ae829699..590318aafaea 100644 --- a/sound/soc/codecs/wm8991.c +++ b/sound/soc/codecs/wm8991.c @@ -1253,7 +1253,7 @@ static const struct regmap_config wm8991_regmap = { .volatile_reg = wm8991_volatile, .reg_defaults = wm8991_reg_defaults, .num_reg_defaults = ARRAY_SIZE(wm8991_reg_defaults), - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_MAPLE, };
static int wm8991_i2c_probe(struct i2c_client *i2c)