From 2690dfdb05abf3a8e11ff21ec12dbbe620a026fb Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Fri, 6 Apr 2012 15:16:03 -0600 Subject: [PATCH] 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 Signed-off-by: Mark Brown --- drivers/base/regmap/regmap.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 004a08d54f07..e6038bc54210 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 || -- GitLab