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regmap: cache: Add warning info for the cache check

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If there is no cache used for the drivers, the register defaults
or the register defaults raw are not need any more. This patch
will check this and print a warning.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Xiubo Li 2015-12-11 11:23:19 +08:00 • committed by Mark Brown
parent 8005c49d9a
commit 8cfe2fd356
1 changed files with 8 additions and 4 deletions
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12
drivers/base/regmap/regcache.c
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@ -100,15 +100,19 @@ 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) {
if (config->reg_defaults || config->num_reg_defaults_raw)
dev_warn(map->dev,
"No cache used with register defaults set!\n");
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;