linux-kernel - Re: a7839e96 (PNP: increase max resources) breaks my ALSA intel8x0 sound card

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Message-ID: <alpine.LFD.1.00.0802141226010.6110@woody.linux-foundation.org>
Date:	Thu, 14 Feb 2008 12:26:59 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Bjorn Helgaas <bjorn.helgaas@...com>
cc:	Robert Hancock <hancockr@...w.ca>,
	Andrew Morton <akpm@...ux-foundation.org>, avuton@...il.com,
	yakui.zhao@...el.com, shaohua.li@...el.com, trenn@...e.de,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	alsa-devel@...a-project.org
Subject: Re: a7839e96 (PNP: increase max resources) breaks my ALSA intel8x0
 sound card



On Thu, 14 Feb 2008, Bjorn Helgaas wrote:

> On Thursday 14 February 2008 12:42:52 pm Linus Torvalds wrote:
> > 
> > It *shouldn't* fail.
> > 
> > Things should fail only when two different drivers have requested the same 
> > region. NOT when something tells the system that a region _exists_.
> 
> The sound driver doesn't fail because two different drivers have
> requested the same region; it fails because PNP told us a region
> exists, and the sound region crosses the edge of the PNP region.

Right, and that was a bug.

It *shouldn't* fail. The PnP resource should be inserted _after_ the 
PCI region has been inserted, and _that_ should fail, since the PnP region 
is crap and cannot be inserted "half-way".

		Linus
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