On Wednesday 29 September 2004 23:09, Zeeshan Ali wrote: > I dont know how to communicate my concern. I can't digest how come > MAJOR NUMBER identifies the driver rather than the device type as I Hmm.. I have been watching this for a while. I thought I do have a possible answer to your question. Whenever there are cases like the one you spoke of (the video0 and video1 stuff), the drivers would not possibly register a major device number (the stuff of char and block numbers is quite irrelevant to this discussion), but would register to another interface. For eg, all of USB devices have major number 180, this is registered by usbcore (drivers/usb/file.c). The other USB drivers for various devices would only use the interface usb_register(), or whatever to register their own drivers with the subsystem, and NOT register a major number again. I guess a similar thing holds for other 'groups' of devices. -- Regards, Kiran Kumar Immidi -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
