linux-kernel - Re: Machine crashes right *after* ~successful resume

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Message-ID: <CAE9FiQWDHq5esSt4UvE5AkHR-=XMvrzaNFwLg+0xKisTNOtcsQ@mail.gmail.com>
Date:	Wed, 15 Oct 2014 21:32:37 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Wilmer van der Gaast <wilmer@...st.net>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Pavel Machek <pavel@....cz>,
	Rafael Wysocki <rafael.j.wysocki@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Machine crashes right *after* ~successful resume

On Wed, Oct 15, 2014 at 4:34 PM, Wilmer van der Gaast <wilmer@...st.net> wrote:
>
> Is there anything I can do now to find out why your change is causing my
> machine to crash?

Can you please try attached patch? that should workaround the problem.

as some driver is using pci_enable_device in .resume instead of
pci_renable_device....

We should skip the pci_enable_bridge in those pci_enable_device to avoid
contention between async device_resume.

Thanks

Yinghai

View attachment "skip_enable_bridge_on_resume_path.patch" of type "text/x-patch" (1081 bytes)