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| author | Alexandru Ardelean <alexandru.ardelean@analog.com> | 2018-08-07 17:06:05 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2018-08-19 18:32:05 +0100 |
| commit | 6b8471e4601db48ef76144fac6e706256c2aae2d (patch) | |
| tree | 89609023e78f36a78213bd7c3507692137735886 | |
| parent | eb2e188817b13d2f13b61ea6b96b7753ccff48dd (diff) | |
| download | linux-6b8471e4601db48ef76144fac6e706256c2aae2d.tar.bz2 | |
iio: adxl345: move null check for i2c id at start of probe
Fixes ef89f4b96a2 ("iio: adxl345: Add support for the ADXL375").
This was found via static checker.
After looking into the code a bit, it's unlikely that there will be a NULL
dereference if the `id` object in that specific code path.
However, it's safe to add a NULL (paranoid) check just to make sure and
remove any uncertainties.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/accel/adxl345_i2c.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/iio/accel/adxl345_i2c.c b/drivers/iio/accel/adxl345_i2c.c index 785c89de91e7..f22f71315a0c 100644 --- a/drivers/iio/accel/adxl345_i2c.c +++ b/drivers/iio/accel/adxl345_i2c.c @@ -27,6 +27,9 @@ static int adxl345_i2c_probe(struct i2c_client *client, { struct regmap *regmap; + if (!id) + return -ENODEV; + regmap = devm_regmap_init_i2c(client, &adxl345_i2c_regmap_config); if (IS_ERR(regmap)) { dev_err(&client->dev, "Error initializing i2c regmap: %ld\n", @@ -35,7 +38,7 @@ static int adxl345_i2c_probe(struct i2c_client *client, } return adxl345_core_probe(&client->dev, regmap, id->driver_data, - id ? id->name : NULL); + id->name); } static int adxl345_i2c_remove(struct i2c_client *client) |