Commit 2690dfdb authored by Stephen Warren's avatar Stephen Warren Committed by Mark Brown
Browse files

regmap: validate regmap_raw_read/write val_len 



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

Signed-off-by: default avatarStephen Warren <swarren@nvidia.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 8664d490

drivers/base/regmap/regmap.c

+6 −0
Original line number Diff line number Diff line
@@ -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 ||

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