[SOLVED] List all devices bound to a driver

Issue

Let's say I have drivers A and B in the Linux kernel space, with devices bound to them. I would like to export API in the driver A to B to provide list of devices bound to the driver A. Is it possible for a driver A to get to know about all devices currently being detected and bound to that driver?

Solution

Yes, simply register functions with A when driver B loads and call same function whenever device list is required. e.g

Driver A <<< register_func(func_ptr_list); export register_func Driver B <<< Call register_func with function list.

Multiple driver talks to each other using similar function element. for example Look at module_int for cxgb4 and cxgb4i

Answered By - tej parkash

Answer Checked By - Candace Johnson (WPSolving Volunteer)