openkylin
/
platform_kernel-5.15
mirror of https://gitee.com/openkylin/platform_kernel-5.15.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

regmap: cache: Handle stride > 1 in sync_block_raw_flush 

regcache_sync_block_raw_flush takes the address of the base register
and the address of one past the last register to write to.  "count" is
the number of registers in the range, not the number of bytes, it
should be (end addr - start addr) / stride. Without accounting for
strides greater than one, registers past the end might be synced or
the writeable_reg callback at the beginning of _regmap_raw_write will
fail and nothing will be written.

Signed-off-by: Dylan Reid <dgreid@chromium.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Dylan Reid 2014-01-24 15:40:39 -08:00 committed by Mark Brown
parent 86776fc174
commit 78ba73eecd
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -636,10 +636,10 @@ static int regcache_sync_block_raw_flush(struct regmap *map, const void **data,
if (*data == NULL)
return 0;
count = cur - base;
count = (cur - base) / map->reg_stride;
dev_dbg(map->dev, "Writing %zu bytes for %d registers from 0x%x-0x%x\n",
count * val_bytes, count, base, cur - 1);
count * val_bytes, count, base, cur - map->reg_stride);
map->cache_bypass = 1;