linux-kernel - [PATCH 4/6] regmap: cache: speed regcache_hw

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Message-ID: <1412845377-17134-5-git-send-email-Li.Xiubo@freescale.com>
Date:	Thu, 9 Oct 2014 17:02:55 +0800
From:	Xiubo Li <Li.Xiubo@...escale.com>
To:	<broonie@...nel.org>
CC:	<linux-kernel@...r.kernel.org>, <dp@...nsource.wolfsonmicro.com>,
	Xiubo Li <Li.Xiubo@...escale.com>
Subject: [PATCH 4/6] regmap: cache: speed regcache_hw_init() up.

This may speed regcache_hw_init() up for some cases that there
has volatile registers.

Signed-off-by: Xiubo Li <Li.Xiubo@...escale.com>
---
 drivers/base/regmap/regcache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 8a7c270..45ab909 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -71,9 +71,9 @@ static int regcache_hw_init(struct regmap *map)
 	/* fill the reg_defaults */
 	map->num_reg_defaults = count;
 	for (i = 0, j = 0; i < map->num_reg_defaults_raw; i++) {
-		val = regcache_get_val(map, map->reg_defaults_raw, i);
 		if (regmap_volatile(map, i * map->reg_stride))
 			continue;
+		val = regcache_get_val(map, map->reg_defaults_raw, i);
 		map->reg_defaults[j].reg = i * map->reg_stride;
 		map->reg_defaults[j].def = val;
 		j++;
-- 
2.1.0.27.g96db324

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