Re: [RFC PATCH] platform: Faciliatate the creation ofpseduo-platform busses

From: Alan Cox
Date: Wed Aug 04 2010 - 05:27:30 EST

> (possibly in a header)
> #ifdef CONFIG_MY_BUS
> #define MY_BUS_TYPE &my_bus_type
> #else
> #define MY_BUS_TYPE NULL
> #endif
> /drivers/my_driver.c
> static struct platform_driver my_driver = {
> .driver = {
> .name = "my-driver",
> .owner = THIS_MODULE,
> .bus = MY_BUS_TYPE,
> },
> };
> Which will allow the same driver to easily to used on either
> the platform bus or the newly defined bus type.

At compile time. I suspect there is an argument for having an
"ANY_BUS_TYPE" value for the devices so that you can runtime wildcard
stuff which works whatever sub-bus it is hung off.

> I believe this to be a fairly elegant and simple solution to the
> problem, but humbly RFC

It's exactly what I need to tidy up the SCU IPC devices on the new Intel
MID platforms certainly. It's also a very small patch to achieve it

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