c
static int register_device(int minor, struct pp_struct *pp) {
    struct parport *port = NULL; // Initialize port
    char *name = NULL;           // Initialize name

    name = kasprintf(GFP_KERNEL, CHRDEV "%x", minor);
    if (name == NULL) {
        goto err; // Jump to error handling if allocation fails
    }

    port = parport_find_number(minor);
    if (!port) {
        goto err; 
    }
    // ... rest of the code ...

err:
    kfree(name); // Free name if allocated
    // ... release other resources if necessary ...
    return -ENOMEM; 
}
