Hi All I have written a usb module which will be linked if any keyboard is hot plug. I follow the step below to make it work 1) rmmod usbhid 2) insmod hello.ko 3) hot plug the keyboard when the keyboard is hot plugged my kernel module gets loaded and in syslog the messages regarding the detection of the keyboard are present. My problem is i have to always remove "usbhid", if i donot that then "usbhid" module is always linked with the keyboard. How to make make sure that my module usb_kbd.ko gets linked to the keyboard with out removing "usbhid" ? My code is present in the following link https://github.com/selvagit/little_penguin/blob/master/task_05/hello.c The syslog is present in the following path https://github.com/selvagit/little_penguin/blob/master/task_05/syslog I had looked at udev rules, but what i have understood is we can set attributes for the modules but we can not determine which kernel module should be loaded for any device. Thanks, Selvaraj