Messages in this thread Patch in this message | | | From | Lars-Peter Clausen <> | Subject | [PATCH 2/7] regmap: Make reg_config reg_defaults const | Date | Wed, 16 Nov 2011 16:28:17 +0100 |
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The reg_defaults field usually points to a static per driver array, which should not be modified. Make requirement this explicit by making reg_defaults const. To allow this the regcache_init code needs some minor changes. Previoulsy the reg_config was not available in regcache_init and regmap->reg_defaults was used to pass the default register set to regcache_init. Now that the reg_config is available we can work on it directly.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> --- drivers/base/regmap/regcache.c | 5 ++--- include/linux/regmap.h | 2 +- 2 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index 0ad6cfb..d687df6 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -108,7 +108,6 @@ int regcache_init(struct regmap *map, const struct regmap_config *config) return -EINVAL; } - map->reg_defaults = config->reg_defaults; map->num_reg_defaults = config->num_reg_defaults; map->num_reg_defaults_raw = config->num_reg_defaults_raw; map->reg_defaults_raw = config->reg_defaults_raw; @@ -127,10 +126,10 @@ int regcache_init(struct regmap *map, const struct regmap_config *config) * won't vanish from under us. We'll need to make * a copy of it. */ - if (map->reg_defaults) { + if (config->reg_defaults) { if (!map->num_reg_defaults) return -EINVAL; - tmp_buf = kmemdup(map->reg_defaults, map->num_reg_defaults * + tmp_buf = kmemdup(config->reg_defaults, map->num_reg_defaults * sizeof(struct reg_default), GFP_KERNEL); if (!tmp_buf) return -ENOMEM; diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 1e4ec2b..458f15f 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -83,7 +83,7 @@ struct regmap_config { bool (*precious_reg)(struct device *dev, unsigned int reg); unsigned int max_register; - struct reg_default *reg_defaults; + const struct reg_default *reg_defaults; unsigned int num_reg_defaults; enum regcache_type cache_type; const void *reg_defaults_raw; -- 1.7.7.1
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