linux-kernel - Re: 2.6.30 enabling cpu1 on resume fails after suspend to memory

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Date:	Sun, 14 Jun 2009 14:09:21 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	"Benjamin S." <sbenni@....de>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org, js@...21.net,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Linux PCI <linux-pci@...r.kernel.org>,
	Matthew Wilcox <matthew@....cx>
Subject: Re: 2.6.30 enabling cpu1 on resume fails after suspend to memory

On Sun, 14 Jun 2009, Rafael J. Wysocki wrote:
> Evidently, the change of the interrupt handling during suspend-resume,
> commit 2ed8d2b3a81bdbb0418301628ccdb008ac9f40b7 (PM: Rework handling of
> interrupts during suspend-resume) broke resume (specifically, the enabling of
> nonboot CPUs) on the Benjamin's machine, but only if MSI support is enabled.
> Also, resume works if suspend_device_irqs() and resume_device_irqs() in
> drivers/base/power/main.c are commented out.
> 
> Is there anything the MSI code does in __enable_irq() and/or __disable_irq()
> that might cause this problem to appear?

Not that I'm aware of. Which of the devices is using MSI ? Have to
tried to skip only the MSI ones in suspend/resume_device_irqs() ?

Thanks,

	tglx
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