linux-kernel - Re: tty, vt: lockdep warnings

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Date:	Tue, 6 Nov 2012 22:26:41 -0800 (PST)
From:	Hugh Dickins <hughd@...gle.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
cc:	Sasha Levin <sasha.levin@...cle.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Sasha Levin <levinsasha928@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.cz>, linux-kernel@...r.kernel.org,
	Dave Jones <davej@...hat.com>, linux-fbdev@...r.kernel.org,
	florianSchandinat@....de
Subject: Re: tty, vt: lockdep warnings

On Tue, 6 Nov 2012, Hugh Dickins wrote:
> 
> Ah, now I actually scan through it, I see references to blank screen:
> I'll try taking off your patch and seeing if it came up at screen
> blanking time, then put on your patch back on and try again.
> I'll report back in an hour or two.

Yes, that was it.  When the console screen blanked on 3.7.0-rc3-mm1,
it generated that lockdep splat, visible once I unblanked.  But once I
applied your patch to the kernel, lockdep kept quiet across blank/unblank.

Thanks!
Hugh
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