commit: http://blackfin.uclinux.org/git/?p=linux-kernel;a=commitdiff;h=9145fdcc0079c8c1ac1c1b9b0abe5919a77d4975
branch: http://blackfin.uclinux.org/git/?p=linux-kernel;a=shortlog;h=refs/heads/2011R1
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 <[email protected]>
---
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 4016b00..a471083 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -387,9 +387,11 @@ 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);
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