linux-kernel - Re: Regression from 2.6.26: Hibernation (possibly suspend) broken on Toshiba R500 (bisected)

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Message-ID: <alpine.LFD.2.00.0812041415020.3543@nehalem.linux-foundation.org>
Date:	Thu, 4 Dec 2008 14:20:21 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	Frans Pop <elendil@...net.nl>, Greg KH <greg@...ah.com>,
	Ingo Molnar <mingo@...e.hu>, jbarnes@...tuousgeek.org,
	lenb@...nel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	tiwai@...e.de, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: Regression from 2.6.26: Hibernation (possibly suspend) broken
 on Toshiba R500 (bisected)

On Thu, 4 Dec 2008, Rafael J. Wysocki wrote:
> 
> However, this one appears to work reliably for me (on top of vanilla current
> mainline):

Not very interesting. It just does the same thing your previous patches 
have done - ignores the cardbus slot for sizing. It just does it 
differently and more explicitly.

Your original patch did it by simply giving the resources invalid 
alignments (in a very non-obvious way). This one does it by being explicit 
and saying "we won't care about cardbus resources behind transparent 
bridges". But it's still a very hacky thing, and thus not really 
interesting at all as a patch.

IOW, it's not a patch that makes sense - it's just a patch that ON YOUR 
PARTICULAR MACHINE causes us to get the layout you want in order to hide 
the bug. And it doesn't really even do anything new - it's just doing the 
same thing in an old way.

But it's interesting that the "don't size _anything_ behind a transparent 
bridge" apparently made no difference for you.

Can you send "lspci -vv" and "dmesg" output for that kernel? Even if it 
failed the suspend/resume, it's interesting, because I would actually have 
expected that one to have the same layout as the successful ones.

			Linus
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