This is a note to let you know that I've just added the patch titled
regmap: Add missing map->bus check
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
regmap-add-missing-map-bus-check.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a10175cfa49ca94deac42d72a71d26a1aa4b2d68
Author: Marek Vasut <marex@xxxxxxx>
Date: Mon May 9 02:30:35 2022 +0200
regmap: Add missing map->bus check
[ Upstream commit 5c422f0b970d287efa864b8390a02face404db5d ]
The map->bus can be NULL here, add the missing NULL pointer check.
Fixes: d77e745613680 ("regmap: Add bulk read/write callbacks into regmap_config")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
To: linux-kernel@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20220509003035.225272-1-marex@xxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 6f580883c1973..aa9c6e0ff878d 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1648,7 +1648,7 @@ static int _regmap_raw_write_impl(struct regmap *map, unsigned int reg,
map->format.reg_bytes +
map->format.pad_bytes +
val_len);
- else if (map->bus->gather_write)
+ else if (map->bus && map->bus->gather_write)
ret = map->bus->gather_write(map->bus_context, map->work_buf,
map->format.reg_bytes +
map->format.pad_bytes,
