Driver porting: hello world

Posted Sep 20, 2005 15:17 UTC (Tue) by jeanwelly (guest, #29199)
In reply to: Driver porting: hello world by vleo
Parent article: Driver porting: hello world

I use "insmod hello.ko " to use the module, It's OK when I check the kernel message. But when I want to remove the module, error found:

[root@localhost kernel-dev]# rmmod -f hello.ko
ERROR: Removing 'hello': Device or resource busy

Does any one know why?
Thanks!

Posted Jan 13, 2008 5:51 UTC (Sun) by manish_badarkhe (guest, #49929) [Link]

I think your device is in some other mode(read or write) while you are removing the device