On Wed, Oct 19, 2011 at 7:04 PM, Kai Meyer <kai@xxxxxxxxxx> wrote: > I can't seem to get my character device to remove itself from the > /proc/devices list. I'm calling all of the following functions like so: > > alloc_chrdev_region(&dev, 0, 5, "my_char"); > cdev_init(&my_cdev, &my_ops); > cdev_add(&my_cdev, MKDEV(my_major, my_minor), 1); > cdev_del(&my_cdev); > unregister_chrdev_region(my_major, 5); > > It seems like I'm missing something, but I can't find it. I'm > referencing the Linux Device Drivers v3, chapter 3. In the example code, > the scull_cleanup_module function calls cdev_dell and > unregister_chrdev_region, just like I do. > > To be clear, after I unload my module (after calling cdev_del and > unregister_chrdev_region), my "my_char" string still shows up in > /proc/devices. Did you check return codes for all functions? Also, can you post a link to the code? thanks, Daniel. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
