On Thu, 2004-09-30 at 07:56, Zeeshan Ali wrote: > Hello, > Whenever i open the device /dev/lpN, the kernel automatically loads > the appropriate driver for that device, as if it has a list of major > number to module mapping. How/where does the kernel do it? look in devices.c.. the open is done by chrdev_open(), which eventually gets the drivers fops structure out of an array called chrdevs that is simply indexed by the major number of the device being opened.. the chrdevs array itself is populated through register_chrdev() which drivers normally call during their initialization. -Patrick -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
