linux-kernel - [PATCH 3/4] iio: light: apds9306: convert to use maple tree register cache

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Message-ID: <20251024073823.35122-4-chuguangqing@inspur.com>
Date: Fri, 24 Oct 2025 15:38:22 +0800
From: Chu Guangqing <chuguangqing@...pur.com>
To: <lars@...afoo.de>, <Michael.Hennerich@...log.com>, <jic23@...nel.org>,
	<dlechner@...libre.com>, <nuno.sa@...log.com>, <andy@...nel.org>,
	<subhajit.ghosh@...aklogic.com>, <javier.carrasco.cruz@...il.com>
CC: <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Chu Guangqing
	<chuguangqing@...pur.com>
Subject: [PATCH 3/4] iio: light: apds9306: 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: Chu Guangqing <chuguangqing@...pur.com>
---
 drivers/iio/light/apds9306.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/light/apds9306.c b/drivers/iio/light/apds9306.c
index 389125675caa..7e68cca0edfa 100644
--- a/drivers/iio/light/apds9306.c
+++ b/drivers/iio/light/apds9306.c
@@ -350,7 +350,7 @@ static const struct regmap_config apds9306_regmap = {
 	.volatile_table = &apds9306_volatile_table,
 	.precious_table = &apds9306_precious_table,
 	.max_register = APDS9306_ALS_THRES_VAR_REG,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 static const struct reg_field apds9306_rf_sw_reset =
-- 
2.43.7