int muic_device_register(struct muic_device *mdev, struct muic_ops *ops)
{
int ret;
if (!mdev)
return -EINVAL;
if (_mdev != NULL) {
printk(KERN_ERR "muic device is alread installed!\n");
return -EPERM;
}
if (!muic_class) {
ret = create_muic_class();
if (ret < 0)
return ret;
}
mdev->index = atomic_inc_return(&device_count);
mdev->dev = device_create(muic_class, NULL,
MKDEV(0, mdev->index), mdev, mdev->name);
if (IS_ERR(mdev->dev))
return PTR_ERR(mdev->dev);
ret = device_create_file(mdev->dev, &dev_attr_state);
if (ret < 0)
goto err_create_file_1;
ret = device_create_file(mdev->dev, &dev_attr_name);
if (ret < 0)
goto err_create_file_2;
ret = device_create_file(mdev->dev, &dev_attr_int_state);
if (ret < 0)
goto err_create_file_2;
mdev->mode = MUIC_UNKNOWN;
_mdev = mdev;
return 0;
err_create_file_2:
device_remove_file(mdev->dev, &dev_attr_state);
err_create_file_1:
device_destroy(muic_class, MKDEV(0, mdev->index));
printk(KERN_ERR "muic: Failed to register driver %s\n", mdev->name);
return ret;
}
int muic_device_register(struct muic_device *mdev, struct muic_ops *ops)
{
int ret;
if (!mdev)
return -EINVAL;
if (_mdev != NULL) {
printk(KERN_ERR "muic device is already installed!\n");
return -EPERM;
}
if (!muic_class) {
ret = create_muic_class();
if (ret < 0) {
printk(KERN_ERR "%s: create_muic_class fails!\n", __func__);
return ret;
}
}
mdev->index = atomic_inc_return(&device_count);
mdev->dev = device_create(muic_class, NULL,
MKDEV(0, mdev->index), mdev, mdev->name);
if (IS_ERR(mdev->dev)) {
printk(KERN_ERR "%s: device_create fails!\n", __func__);
return PTR_ERR(mdev->dev);
}
ret = device_create_file(mdev->dev, &dev_attr_state);
if (ret < 0)
goto err_create_file_1;
ret = device_create_file(mdev->dev, &dev_attr_name);
if (ret < 0)
goto err_create_file_2;
ret = device_create_file(mdev->dev, &dev_attr_int_state);
if (ret < 0)
goto err_create_file_3;
mdev->mode = MUIC_NONE;
#if defined(CONFIG_MAX8971_CHARGER)
mdev->mode_in_retain = MUIC_NONE;
#endif
_mdev = mdev;
return 0;
err_create_file_3:
device_remove_file(mdev->dev, &dev_attr_name);
err_create_file_2:
device_remove_file(mdev->dev, &dev_attr_state);
err_create_file_1:
device_destroy(muic_class, MKDEV(0, mdev->index));
printk(KERN_ERR "muic: Failed to register driver %s\n", mdev->name);
return ret;
}
