mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-28 07:13:34 +00:00
Code Issues Releases Wiki Activity

regmap: Allow multiple patches to be registered

Browse source 
It may be useful to register multiple patches with regmap, for example
one that depends on the device revision and one that depends on the system
configuration. Add support for doing this, appending any new patches to
the existing patches.

Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Mark Brown 2013-07-11 12:41:44 +01:00
parent ad81f0545e
commit aab13ebca2
1 changed files with 8 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
drivers/base/regmap/regmap.c
View file

@ -1888,13 +1888,10 @@ EXPORT_SYMBOL_GPL(regmap_async_complete);
int regmap_register_patch(struct regmap *map, const struct reg_default *regs,
int num_regs)
{
struct reg_default *p;
int i, ret;
bool bypass;
/* If needed the implementation can be extended to support this */
if (map->patch)
return -EBUSY;
map->lock(map->lock_arg);
bypass = map->cache_bypass;
@ -1911,11 +1908,13 @@ int regmap_register_patch(struct regmap *map, const struct reg_default *regs,
}
}
map->patch = kcalloc(num_regs, sizeof(struct reg_default), GFP_KERNEL);
if (map->patch != NULL) {
memcpy(map->patch, regs,
num_regs * sizeof(struct reg_default));
map->patch_regs = num_regs;
p = krealloc(map->patch,
sizeof(struct reg_default) * (map->patch_regs + num_regs),
GFP_KERNEL);
if (p) {
memcpy(p + map->patch_regs, regs, num_regs * sizeof(*regs));
map->patch = p;
map->patch_regs += num_regs;
} else {
ret = -ENOMEM;
}