leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

regmap: Support some more block operations on cached devices

Browse Source 
Commit 10a08d9f ("regmap: Support some block operations on cached devices")
allowed raw read operations without throwing a warning when using caches if
all registers are volatile. This patch does the same for raw write operations.

This is for example useful when loading a firmware in a predefined volatile
region on a chip where we otherwise want registers to be cached.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Lars-Peter Clausen 2011-11-08 18:37:26 +01:00 committed by Mark Brown
parent 82cd9965c3
commit c48a9d7492
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/base/regmap/regmap.c
View File

@ -389,9 +389,11 @@ EXPORT_SYMBOL_GPL(regmap_write);
int regmap_raw_write(struct regmap *map, unsigned int reg,
const void *val, size_t val_len)
{
size_t val_count = val_len / map->format.val_bytes;
int ret;
WARN_ON(map->cache_type != REGCACHE_NONE);
WARN_ON(!regmap_volatile_range(map, reg, val_count) &&
map->cache_type != REGCACHE_NONE);
mutex_lock(&map->lock);