diff options
Diffstat (limited to 'drivers/base/regmap')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 742f300..d27758c 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1116,6 +1116,16 @@ int _regmap_raw_write(struct regmap *map, unsigned int reg, u8[0] |= map->write_flag_mask; + /* + * Essentially all I/O mechanisms will be faster with a single + * buffer to write. Since register syncs often generate raw + * writes of single registers optimise that case. + */ + if (val != work_val && val_len == map->format.val_bytes) { + memcpy(work_val, val, map->format.val_bytes); + val = work_val; + } + if (async && map->bus->async_write) { struct regmap_async *async; |