Hi Suresh: <quote> There are entry points like suspend and resume in PCI driver structure. I dont understand what they are for and I want to know when they will be called. </quote> The suspend/resume are for PCI power management. Check this: http://www.charmed.com/txt/pci-power.txt Regards, Shaks -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/