Commit 5494a98f authored by Fabio Estevam's avatar Fabio Estevam Committed by Mark Brown

regmap: Fix the size calculation for map->format.buf_size

The word to be transmitted/received via regmap is composed by the following
parts:

config->reg_bits
config->val_bits
config->pad_bits

,so the total size should be calculated by summing up the number of bits of
each element and using a DIV_ROUND_UP to return the number of bytes.
Signed-off-by: default avatarFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent bfaa25f3
...@@ -246,11 +246,11 @@ struct regmap *regmap_init(struct device *dev, ...@@ -246,11 +246,11 @@ struct regmap *regmap_init(struct device *dev,
map->lock = regmap_lock_mutex; map->lock = regmap_lock_mutex;
map->unlock = regmap_unlock_mutex; map->unlock = regmap_unlock_mutex;
} }
map->format.buf_size = (config->reg_bits + config->val_bits) / 8;
map->format.reg_bytes = DIV_ROUND_UP(config->reg_bits, 8); map->format.reg_bytes = DIV_ROUND_UP(config->reg_bits, 8);
map->format.pad_bytes = config->pad_bits / 8; map->format.pad_bytes = config->pad_bits / 8;
map->format.val_bytes = DIV_ROUND_UP(config->val_bits, 8); map->format.val_bytes = DIV_ROUND_UP(config->val_bits, 8);
map->format.buf_size += map->format.pad_bytes; map->format.buf_size = DIV_ROUND_UP(config->reg_bits +
config->val_bits + config->pad_bits, 8);
map->reg_shift = config->pad_bits % 8; map->reg_shift = config->pad_bits % 8;
if (config->reg_stride) if (config->reg_stride)
map->reg_stride = config->reg_stride; map->reg_stride = config->reg_stride;
......
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