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authorStephen Warren <swarren@nvidia.com>2012-04-06 15:16:03 -0600
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-04-07 09:27:04 +0100
commit851960ba7cb38a6a108d102e4c8b0ab702972e22 (patch)
tree0af40ec3a92921077f71a2f8b703f64eb0eb322f /drivers/base/regmap
parent9878647f4349dbaa46b4026ed9bbf8acfc0de34c (diff)
downloadop-kernel-dev-851960ba7cb38a6a108d102e4c8b0ab702972e22.zip
op-kernel-dev-851960ba7cb38a6a108d102e4c8b0ab702972e22.tar.gz
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/base/regmap')
-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 6b4a775..ee4fea3 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -595,6 +595,9 @@ 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);
@@ -753,6 +756,9 @@ 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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