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SubjectApplied "regmap: Fix reversed bounds check in regmap_raw_write()" to the regmap tree
The patch

regmap: Fix reversed bounds check in regmap_raw_write()

has been applied to the regmap tree at

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tree (usually sometime in the next 24 hours) and sent to Linus during
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From f00e71091ab92eba52122332586c6ecaa9cd1a56 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <>
Date: Thu, 8 Feb 2018 10:23:44 +0300
Subject: [PATCH] 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 <>
Signed-off-by: Mark Brown <>
drivers/base/regmap/regmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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;

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