linux-kernel - Re: [2.6.18-rc2][e1000][swsusp] - Regression - Suspend to disk and resume breaks e1000

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Message-Id: <200607161333.20858.shawn.starr@rogers.com>
Date:	Sun, 16 Jul 2006 13:33:20 -0400
From:	Shawn Starr <shawn.starr@...ers.com>
To:	Auke Kok <auke-jan.h.kok@...el.com>
Cc:	linux-kernel@...r.kernel.org, NetDev <netdev@...r.kernel.org>
Subject: Re: [2.6.18-rc2][e1000][swsusp] - Regression - Suspend to disk and resume breaks e1000

On Sunday 16 July 2006 12:33, Auke Kok wrote:
> [adding netdev to the cc]
>
>
> unfortunately I didn't.
>
> e1000 has a special e1000_pci_save_state/e1000_pci_restore_state set of
> routines that save and restore the configuration space. the fact that it
> works for suspend to memory to me suggests that there is nothing wrong with
> that.
>
> I'm surprised that the t42 comes with a PCI/PCI-X e1000, which changes the
> need for this special routine, and the routine does the exact same thing as
> pci_save_state in your case. These special routines are made to handle
> PCI-E cards properly.
>
> Also there are no config_pm changes related to this in 2.6.18-rc2. Most of
> this code has been in the kernel for a few major releases afaik. This code
> worked fine before, so I don't rule out any suspend-related issues. You
> should certainly compare with 2.6.18-rc1 and make sure it was a regression,
> perhaps even bisect the e1000-related changes if you have the time, which
> is about 22 patches or so.
>
> I'll see if I can find out some more once I get back to work.
>
> Auke

The previous kernel I was using was 2.6.17 vanilla, so between this and -git 
snapshots I'll have to see where that changed.

Thanks ,
Shawn.
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