linux-kernel - Re: [PATCH] PCI: Clear Bus Master bit only on kexec reboot

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Message-ID: <52964C9A.6040305@oracle.com>
Date:	Wed, 27 Nov 2013 12:48:42 -0700
From:	Khalid Aziz <khalid.aziz@...cle.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
CC:	bhelgaas@...gle.com, cl91tp@...il.com, tianyu.lan@...el.com,
	khlebnikov@...nvz.org, gnomes@...rguk.ukuu.org.uk,
	indou.takao@...fujitsu.com, jility09@...il.com, f.otti@....at,
	ebiederm@...ssion.com, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] PCI: Clear Bus Master bit only on kexec reboot

On 11/27/2013 12:24 PM, Matthew Garrett wrote:
> On Wed, Nov 27, 2013 at 12:18:28PM -0700, Khalid Aziz wrote:
>
>> +/* flag to track if kexec reboot is in progress */
>> +extern unsigned long kexec_in_progress;
>
> Adding this to pci.h seems a little odd. We may want to use it somewhere
> else at some point. Add it to kexec.h instead?
>

I debated between pci.h and kexec.h but pci-driver.c does not include 
kexec.h and I didn't want to include a whole new file. Now I see another 
problem with adding that extern declaration to pci.h - if CONFIG_KEXEC 
is not set, build will fail. I should add #ifdef CONFIG_KEXEC to the 
code in pci-driver.c as well. Time for v2.

--
Khalid
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