summaryrefslogtreecommitdiffstats
path: root/drivers/base/regmap
diff options
context:
space:
mode:
authorDan Carpenter <dan.carpenter@oracle.com>2018-02-08 08:23:44 +0100
committerMark Brown <broonie@kernel.org>2018-02-08 16:35:46 +0100
commitf00e71091ab92eba52122332586c6ecaa9cd1a56 (patch)
treea6413e0a1443e81f1908a6f87cbb4b6648ae6e47 /drivers/base/regmap
parentMerge remote-tracking branches 'regmap/topic/soundwire' and 'regmap/topic/zer... (diff)
downloadlinux-f00e71091ab92eba52122332586c6ecaa9cd1a56.tar.xz
linux-f00e71091ab92eba52122332586c6ecaa9cd1a56.zip
regmap: Fix reversed bounds check in regmap_raw_write()
We're supposed to be checking that "val_len" is not too large but instead we check if it is smaller than the max. The only function affected would be regmap_i2c_smbus_i2c_write() in drivers/base/regmap/regmap-i2c.c. Strangely that function has its own limit check which returns an error if (count >= I2C_SMBUS_BLOCK_MAX) so it doesn't look like it has ever been able to do anything except return an error. Fixes: c335931ed9d2 ("regmap: Add raw_write/read checks for max_raw_write/read sizes") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/base/regmap')
-rw-r--r--drivers/base/regmap/regmap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index ee302ccdfbc8..453116fd4362 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1831,7 +1831,7 @@ int regmap_raw_write(struct regmap *map, unsigned int reg,
return -EINVAL;
if (val_len % map->format.val_bytes)
return -EINVAL;
- if (map->max_raw_write && map->max_raw_write > val_len)
+ if (map->max_raw_write && map->max_raw_write < val_len)
return -E2BIG;
map->lock(map->lock_arg);