linux-kernel - Re: BAR 14: can't assign mem (size 0x200000)

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Message-ID: <CA+55aFx_zAO0iJVi==4X-bYFTopgaOCopCdUBbqUwKfOrXRYqw@mail.gmail.com>
Date:	Sat, 29 Mar 2014 09:41:20 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Parag Warudkar <parag.lkml@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: BAR 14: can't assign mem (size 0x200000)

On Sat, Mar 29, 2014 at 12:11 AM, Yinghai Lu <yinghai@...nel.org> wrote:
>
> Later during resuming, kernel try to assign resource 02:00.0 but it will fail
> as parent bridge 00:1c.3 has no resource.
> (Not sure how pci_configure_slot get called with this resume path).

I think that last comment is the most pertinent one: why does resume
try to assign resources to PCI devices? It should be *restoring* them,
not re-assigning any resources.

Parag, can you add a WARN_ON_ONCE() to that message, so that we see
what the call chain is for it.

              Linus
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