linux-kernel - Re: [PATCH 1/3] pci, usb: Seperate usb handoff func to another file

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Message-ID: <4D2AAEDD.5060604@kernel.org>
Date:	Sun, 09 Jan 2011 23:01:49 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	Jesse Barnes <jbarnes@...tuousgeek.org>, Greg KH <greg@...ah.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	linux-usb@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Subject: Re: [PATCH 1/3] pci, usb: Seperate usb handoff func to another file

On 01/09/2011 01:09 PM, Benjamin Herrenschmidt wrote:
> acceptable ?
> 
> I think if you want to make the handoff happen -that- early, you have
> basically two options. One is to move it all to arch code, and the other
> one is to create early-boot "fake" struct pci_dev & bus that have the
> config callbacks implemented pointing to the early stuff. You can do
> that entirely within your arch code, and avoids most of the grossness
> above in the generic places.

good idea, will make one get_early_pci_dev() for x86 as dummy device.

> 
> It would avoid that turd too:
> 
>> +#include "usb_handoff.c"

may still need that to avoid some MMIO bar finding and remapping etc.

Thanks

Yinghai
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