i2c_master_send returns negative errno, or else the number of bytes written.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
memcpy(i2c_data + 1, value, len);
ret = i2c_master_send(client, i2c_data, len + 1);
memcpy(i2c_data + 1, value, len);
ret = i2c_master_send(client, i2c_data, len + 1);
dev_err(&client->dev, "i2c write data cmd failed\n");
dev_err(&client->dev, "i2c write data cmd failed\n");
- return ret ? ret : -EIO;
+ return ret < 0 ? ret : -EIO;