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| author | Lars-Peter Clausen <lars@metafoo.de> | 2011-11-08 18:37:26 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-11-09 01:56:52 +0100 |
| commit | c48a9d74926c83f62b0251eff0a3dde259923856 (patch) | |
| tree | e9292f22699f2ae1ea9e797222a7750ea498dd75 /drivers/base | |
| parent | regmap: Add helper function for checking if a register range is volatile (diff) | |
| download | linux-c48a9d74926c83f62b0251eff0a3dde259923856.tar.xz linux-c48a9d74926c83f62b0251eff0a3dde259923856.zip | |
regmap: Support some more block operations on cached devices
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>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 5c4e76de38d2..3e30d168eb1d 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -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); |