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regmap: Add missing map->bus check 

[ Upstream commit 5c422f0b97 ]

The map->bus can be NULL here, add the missing NULL pointer check.

Fixes: d77e745613 ("regmap: Add bulk read/write callbacks into regmap_config")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
To: linux-kernel@vger.kernel.org
Link: https://lore.kernel.org/r/20220509003035.225272-1-marex@denx.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Marek Vasut 2022-05-09 02:30:35 +02:00 committed by Sasha Levin
parent bcfcdf1969
commit a943eb8283
1 changed files with 1 additions and 1 deletions
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2
drivers/base/regmap/regmap.c
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@ -1796,7 +1796,7 @@ 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,