tty: serial: sc16is7xx: convert to use maple tree register cache

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: wangkaiyuan <wangkaiyuan@inspur.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240318064216.1765-1-wangkaiyuan@inspur.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index c6983b7bd78c6c79b45dbeb83146f894e4d877c3..07aca9fc6d9704dc3d539c1f7d1b148e566410d0 100644 (file)
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1686,7 +1686,7 @@ static struct regmap_config regcfg = {
        .reg_bits = 5,
        .pad_bits = 3,
        .val_bits = 8,
-       .cache_type = REGCACHE_RBTREE,
+       .cache_type = REGCACHE_MAPLE,
        .volatile_reg = sc16is7xx_regmap_volatile,
        .precious_reg = sc16is7xx_regmap_precious,
        .writeable_noinc_reg = sc16is7xx_regmap_noinc,