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regmap: debugfs: Factor out debugfs_tot_len calc into a function

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In preparation to support the regmap debugfs ranges functionality
factor this code out to a separate function.  We'll need to ensure
that the value has been correctly calculated from two separate places
in the code.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Dimitris Papastamos 2013-02-11 10:50:59 +00:00 • committed by Mark Brown
parent cf57d6071f
commit 4dd7c5531d
1 changed files with 14 additions and 8 deletions
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22
drivers/base/regmap/regmap-debugfs.c
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@ -155,6 +155,19 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
return ret; return ret;
} }
static inline void regmap_calc_tot_len(struct regmap *map,
void *buf, size_t count)
{
/* Calculate the length of a fixed format */
if (!map->debugfs_tot_len) {
map->debugfs_reg_len = regmap_calc_reg_len(map->max_register,
buf, count);
map->debugfs_val_len = 2 * map->format.val_bytes;
map->debugfs_tot_len = map->debugfs_reg_len +
map->debugfs_val_len + 3; /* : \n */
}
}
static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from, static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from,
unsigned int to, char __user *user_buf, unsigned int to, char __user *user_buf,
size_t count, loff_t *ppos) size_t count, loff_t *ppos)
@ -173,14 +186,7 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from,
if (!buf) if (!buf)
return -ENOMEM; return -ENOMEM;
/* Calculate the length of a fixed format */ regmap_calc_tot_len(map, buf, count);
if (!map->debugfs_tot_len) {
map->debugfs_reg_len = regmap_calc_reg_len(map->max_register,
buf, count);
map->debugfs_val_len = 2 * map->format.val_bytes;
map->debugfs_tot_len = map->debugfs_reg_len +
map->debugfs_val_len + 3; /* : \n */
}
/* Work out which register we're starting at */ /* Work out which register we're starting at */
start_reg = regmap_debugfs_get_dump_start(map, from, *ppos, &p); start_reg = regmap_debugfs_get_dump_start(map, from, *ppos, &p);