linux-imx

{

    cdev_del(cdev);

}

​

static void dev_dax_kill(void *dev_dax)

{

    kill_dev_dax(dev_dax);

}

​

{

    struct dev_dax *dev_dax = to_dev_dax(dev);

    struct dax_device *dax_dev = dev_dax->dax_dev;

    struct resource *res = &dev_dax->region->res;

    struct inode *inode;

    struct cdev *cdev;

    void *addr;

    int rc;

​

    /* 1:1 map region resource range to device-dax instance range */

    if (IS_ERR(addr)) {

        devm_remove_action(dev, dev_dax_percpu_exit, &dev_dax->ref);

        percpu_ref_exit(&dev_dax->ref);

        return PTR_ERR(addr);

    }

​

    inode = dax_inode(dax_dev);

    cdev = inode->i_cdev;

    cdev_init(cdev, &dax_fops);

    cdev_set_parent(cdev, &dev->kobj);

    rc = cdev_add(cdev, dev->devt, 1);

    if (rc)

        return rc;

​

    rc = devm_add_action_or_reset(dev, dev_dax_cdev_del, cdev);

    if (rc)

        return rc;

​

    run_dax(dax_dev);

    return devm_add_action_or_reset(dev, dev_dax_kill, dev_dax);

}

​

static int dev_dax_remove(struct device *dev)

{

    /* all probe actions are unwound by devm */

    return 0;

}

​

static struct dax_device_driver device_dax_driver = {

    .drv = {

        .probe = dev_dax_probe,