linux-kernel - Re: Possible deadlock when suspending framebuffer

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Message-ID: <BANLkTikRxJHa+kgOSObG4LYf4=zDMEoGyg@mail.gmail.com>
Date:	Wed, 15 Jun 2011 15:04:28 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	wanlong.gao@...il.com
Cc:	Bruno Prémont <bonbons@...ux-vserver.org>,
	Francis Moreau <francis.moro@...il.com>,
	Paul Mundt <lethal@...ux-sh.org>, linux-fbdev@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: Possible deadlock when suspending framebuffer

On Wed, Jun 15, 2011 at 2:22 PM, Wanlong Gao <wanlong.gao@...il.com> wrote:
> On Wed, Jun 15, 2011 at 1:58 PM, Bruno Prémont
> <bonbons@...ux-vserver.org> wrote:
>>
>> Hi,
>>
>> On Wed, 15 Jun 2011 09:09:24 Wanlong Gao <wanlong.gao@...il.com> wrote:
>> > <snip>
>> > Hi Francis:
>> > can you test this patch?
>>
>> Do you have a deadlock trace which you are trying to fix?
> No, I just look at the code and try to fix this but I'm not sure.
> Can you teach me how to have a deadlock trace here?

CONFIG_LOCKDEP=y
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