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authorStephen Warren <swarren@nvidia.com>2012-04-06 21:16:03 (GMT)
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-04-13 10:29:19 (GMT)
commit2690dfdb05abf3a8e11ff21ec12dbbe620a026fb (patch)
treea4d59b2839ca8af08843abdba514ae37cf726ac9 /drivers
parent8664d4901fb17b55aea47ce4ab20fe82c6c177f2 (diff)
downloadlinux-2690dfdb05abf3a8e11ff21ec12dbbe620a026fb.tar.xz
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: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/base/regmap/regmap.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 004a08d..e6038bc 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -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 ||