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regmap: validate regmap_raw_read/write val_len

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val_len should be a multiple of val_bytes. If it's not, error out early.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Stephen Warren 2012-04-06 15:16:03 -06:00 committed by Mark Brown
parent 8664d4901f
commit 2690dfdb05
1 changed files with 6 additions and 0 deletions
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6
drivers/base/regmap/regmap.c
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@ -621,6 +621,9 @@ int regmap_raw_write(struct regmap *map, unsigned int reg,
{
int ret;
if (val_len % map->format.val_bytes)
return -EINVAL;
map->lock(map);
ret = _regmap_raw_write(map, reg, val, val_len);
@ -779,6 +782,9 @@ int regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
unsigned int v;
int ret, i;
if (val_len % map->format.val_bytes)
return -EINVAL;
map->lock(map);
if (regmap_volatile_range(map, reg, val_count) || map->cache_bypass ||