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regmap: use IS_ALIGNED instead of % to improve the performance

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The stride value should always equal to 2^n, so we can use bit
rotation instead of % to improve the performance.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Xiubo Li 2015-12-16 17:45:32 +08:00 committed by Mark Brown
parent a6baa3deaf
commit fcac0233d8
1 changed files with 8 additions and 8 deletions
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16
drivers/base/regmap/regmap.c
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@ -1513,7 +1513,7 @@ int regmap_write(struct regmap *map, unsigned int reg, unsigned int val)
{
int ret;
if (reg % map->reg_stride)
if (!IS_ALIGNED(reg, map->reg_stride))
return -EINVAL;
map->lock(map->lock_arg);
@ -1540,7 +1540,7 @@ int regmap_write_async(struct regmap *map, unsigned int reg, unsigned int val)
{
int ret;
if (reg % map->reg_stride)
if (!IS_ALIGNED(reg, map->reg_stride))
return -EINVAL;
map->lock(map->lock_arg);
@ -1714,7 +1714,7 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
if (map->bus && !map->format.parse_inplace)
return -EINVAL;
if (reg % map->reg_stride)
if (!IS_ALIGNED(reg, map->reg_stride))
return -EINVAL;
/*
@ -1983,7 +1983,7 @@ static int _regmap_multi_reg_write(struct regmap *map,
int reg = regs[i].reg;
if (!map->writeable_reg(map->dev, reg))
return -EINVAL;
if (reg % map->reg_stride)
if (!IS_ALIGNED(reg, map->reg_stride))
return -EINVAL;
}
@ -2133,7 +2133,7 @@ int regmap_raw_write_async(struct regmap *map, unsigned int reg,
if (val_len % map->format.val_bytes)
return -EINVAL;
if (reg % map->reg_stride)
if (!IS_ALIGNED(reg, map->reg_stride))
return -EINVAL;
map->lock(map->lock_arg);
@ -2260,7 +2260,7 @@ int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val)
{
int ret;
if (reg % map->reg_stride)
if (!IS_ALIGNED(reg, map->reg_stride))
return -EINVAL;
map->lock(map->lock_arg);
@ -2296,7 +2296,7 @@ int regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
return -EINVAL;
if (val_len % map->format.val_bytes)
return -EINVAL;
if (reg % map->reg_stride)
if (!IS_ALIGNED(reg, map->reg_stride))
return -EINVAL;
if (val_count == 0)
return -EINVAL;
@ -2414,7 +2414,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
size_t val_bytes = map->format.val_bytes;
bool vol = regmap_volatile_range(map, reg, val_count);
if (reg % map->reg_stride)
if (!IS_ALIGNED(reg, map->reg_stride))
return -EINVAL;
if (map->bus && map->format.parse_inplace && (vol || map->cache_type == REGCACHE_NONE)) {