linux-kernel - Re: 2.6.29-rc3: tg3 dead after resume

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Date:	Fri, 30 Jan 2009 21:40:15 -0500 (EST)
From:	Parag Warudkar <parag.lkml@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
cc:	Parag Warudkar <parag.lkml@...il.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Matt Carlson <mcarlson@...adcom.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: 2.6.29-rc3: tg3 dead after resume



On Fri, 30 Jan 2009, Linus Torvalds wrote:

> If you can try the patch I just sent out, and use that as a base for 
> trying to track down why the heck the legacy code doesn't work, that would 
> be great. It might fix it (assuming my guess about "restore_state while in 
> PCI_D3 doesn't work" was correct), but quite frankly, it's equally 
> possible that it just makes things worse. But it would be really 
> interesting to hear..

Sure - will do.

> 
> Your machine does seem to be interesting, in that not only does it have a 
> PCI-E bridge in it (the eeepc I was playing around with at LCA does not), 
> but judging by the lost config state I also suspect that it actually loses 
> power during STR.

Not sure what the significance of eeepc is in this case - mine being a 
standard Intel 5400 chipset I would have thought that's the last 
place to look for interesting things!
 
> Which is not at all necessarily a given - I suspect it depends on just how 
> the power rails are set up on the motherboard. The fact that PCI-E bridges 
> have apparently worked for others implies that your problems don't happen 
> for everybody, and may relate to that issue.

Do we know this for sure that PCI-E bridges + Suspend have worked for 
others - In this thread at least I think people reported tg3 worked but not 
necessarily with a PCI-E bridge.

Parag
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