From 536cc27deade8f1ec3c1beefa60d5fbe0f6fcb28 Mon Sep 17 00:00:00 2001 From: Kangjie Lu Date: Sat, 16 Mar 2019 17:08:33 -0500 Subject: iio: hmc5843: fix potential NULL pointer dereferences devm_regmap_init_i2c may fail and return NULL. The fix returns the error when it fails. Signed-off-by: Kangjie Lu Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/hmc5843_i2c.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers/iio/magnetometer/hmc5843_i2c.c') diff --git a/drivers/iio/magnetometer/hmc5843_i2c.c b/drivers/iio/magnetometer/hmc5843_i2c.c index 3de7f4426ac4..86abba5827a2 100644 --- a/drivers/iio/magnetometer/hmc5843_i2c.c +++ b/drivers/iio/magnetometer/hmc5843_i2c.c @@ -58,8 +58,13 @@ static const struct regmap_config hmc5843_i2c_regmap_config = { static int hmc5843_i2c_probe(struct i2c_client *cli, const struct i2c_device_id *id) { + struct regmap *regmap = devm_regmap_init_i2c(cli, + &hmc5843_i2c_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + return hmc5843_common_probe(&cli->dev, - devm_regmap_init_i2c(cli, &hmc5843_i2c_regmap_config), + regmap, id->driver_data, id->name); } -- cgit v1.2.3