device still in memory after removing

[Mena Soliko <solikoman@xxxxxxxxx>]

Hi,

I use char device with dynamic allocation of major number, when loading the driver to memory I get the major number 250, when removing the driver and reloading the same driver I get a new number: 249... (and so on)

when I look at /proc/devices I see the my driver with the 250 and 249.

My question is am I not removing the driver properly?

code:

int init_module(void) {

    retval = alloc_chrdev_region(&devt, 0, 1, DEVICE_NAME);  

    pdata->cdev.owner = THIS_MODULE;

    cdev_init(&pdata->cdev, &fops);

    retval = cdev_add(&pdata->cdev, devt, 1);

}

void cleanup_module(void) {

    cdev_del(&pdata->cdev);

    unregister_chrdev_region(MAJOR(devt), 1);

}