mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-14 14:34:28 +08:00
6b8471e460
Fixes ef89f4b96a ("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>
80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/*
|
|
* ADXL345 3-Axis Digital Accelerometer I2C driver
|
|
*
|
|
* Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
|
|
*
|
|
* This file is subject to the terms and conditions of version 2 of
|
|
* the GNU General Public License. See the file COPYING in the main
|
|
* directory of this archive for more details.
|
|
*
|
|
* 7-bit I2C slave address: 0x1D (ALT ADDRESS pin tied to VDDIO) or
|
|
* 0x53 (ALT ADDRESS pin grounded)
|
|
*/
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/module.h>
|
|
#include <linux/regmap.h>
|
|
|
|
#include "adxl345.h"
|
|
|
|
static const struct regmap_config adxl345_i2c_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
};
|
|
|
|
static int adxl345_i2c_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
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",
|
|
PTR_ERR(regmap));
|
|
return PTR_ERR(regmap);
|
|
}
|
|
|
|
return adxl345_core_probe(&client->dev, regmap, id->driver_data,
|
|
id->name);
|
|
}
|
|
|
|
static int adxl345_i2c_remove(struct i2c_client *client)
|
|
{
|
|
return adxl345_core_remove(&client->dev);
|
|
}
|
|
|
|
static const struct i2c_device_id adxl345_i2c_id[] = {
|
|
{ "adxl345", ADXL345 },
|
|
{ "adxl375", ADXL375 },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id);
|
|
|
|
static const struct of_device_id adxl345_of_match[] = {
|
|
{ .compatible = "adi,adxl345" },
|
|
{ .compatible = "adi,adxl375" },
|
|
{ },
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, adxl345_of_match);
|
|
|
|
static struct i2c_driver adxl345_i2c_driver = {
|
|
.driver = {
|
|
.name = "adxl345_i2c",
|
|
.of_match_table = adxl345_of_match,
|
|
},
|
|
.probe = adxl345_i2c_probe,
|
|
.remove = adxl345_i2c_remove,
|
|
.id_table = adxl345_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(adxl345_i2c_driver);
|
|
|
|
MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
|
|
MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver");
|
|
MODULE_LICENSE("GPL v2");
|