diff options
Diffstat (limited to 'drivers/base/regmap/regcache-flat.c')
| -rw-r--r-- | drivers/base/regmap/regcache-flat.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/base/regmap/regcache-flat.c b/drivers/base/regmap/regcache-flat.c index 686c9e0b930e..3ee72550b1e3 100644 --- a/drivers/base/regmap/regcache-flat.c +++ b/drivers/base/regmap/regcache-flat.c @@ -16,20 +16,30 @@ #include "internal.h" +static inline unsigned int regcache_flat_get_index(const struct regmap *map, + unsigned int reg) +{ + return regcache_get_index_by_order(map, reg); +} + static int regcache_flat_init(struct regmap *map) { int i; unsigned int *cache; - map->cache = kcalloc(map->max_register + 1, sizeof(unsigned int), - GFP_KERNEL); + if (!map || map->reg_stride_order < 0) + return -EINVAL; + + map->cache = kcalloc(regcache_flat_get_index(map, map->max_register) + + 1, sizeof(unsigned int), GFP_KERNEL); if (!map->cache) return -ENOMEM; cache = map->cache; for (i = 0; i < map->num_reg_defaults; i++) - cache[map->reg_defaults[i].reg] = map->reg_defaults[i].def; + cache[regcache_flat_get_index(map, map->reg_defaults[i].reg)] = + map->reg_defaults[i].def; return 0; } @@ -47,7 +57,7 @@ static int regcache_flat_read(struct regmap *map, { unsigned int *cache = map->cache; - *value = cache[reg]; + *value = cache[regcache_flat_get_index(map, reg)]; return 0; } @@ -57,7 +67,7 @@ static int regcache_flat_write(struct regmap *map, unsigned int reg, { unsigned int *cache = map->cache; - cache[reg] = value; + cache[regcache_flat_get_index(map, reg)] = value; return 0; } |