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Subject[PATCH] regmap: speed up the regcache_init()
Date
If the cache is not used by the device driver, there is not need to
check the striding of the registers. It will just return 0 from
regcache_init() and let the register striding be checked in proper
place when needed.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
---
drivers/base/regmap/regcache.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 4c07802..edc3bd9 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -100,15 +100,15 @@ int regcache_init(struct regmap *map, const struct regmap_config *config)
int i;
void *tmp_buf;

- for (i = 0; i < config->num_reg_defaults; i++)
- if (config->reg_defaults[i].reg % map->reg_stride)
- return -EINVAL;
-
if (map->cache_type == REGCACHE_NONE) {
map->cache_bypass = true;
return 0;
}

+ for (i = 0; i < config->num_reg_defaults; i++)
+ if (config->reg_defaults[i].reg % map->reg_stride)
+ return -EINVAL;
+
for (i = 0; i < ARRAY_SIZE(cache_types); i++)
if (cache_types[i]->type == map->cache_type)
break;
--
1.8.3.1



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