Re: [RFC] I/O Access Abstractions

Alan Cox
2001-07-02T16:58:21Z

> Because if we just pass in this one extra piece of information which is
> normally already available in the driver, we can avoid a whole lot of ugly
> cruft in the out-of-line functions by plugging in the correct out-of-line
> function to match the resource.

Case 1:
You pass a single cookie to the readb code
Odd platforms decode it

Case 2:
You carry around bus number information all throughout
each driver
You keep putting it on/off the stack
You keep it in structures
You do complex generic locking for hotplug 'just in case'

I think I prefer case 1.