linux-kernel - Re: [PATCH] drm/i915: Move the irq wait queue initialisation into the ring init

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Message-Id: <1bdc18$k1kc9s@fmsmga002.fm.intel.com>
Date:	Tue, 29 Mar 2011 14:22:37 +0100
From:	Chris Wilson <chris@...is-wilson.co.uk>
To:	Pekka Enberg <penberg@...nel.org>
Cc:	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/i915: Move the irq wait queue initialisation into the ring init

On Tue, 29 Mar 2011 16:05:35 +0300, Pekka Enberg <penberg@...nel.org> wrote:
> On Tue, Mar 29, 2011 at 3:23 PM, Chris Wilson <chris@...is-wilson.co.uk> wrote:
> > Required so that we don't obliterate the queue if initialising the
> > rings after the global IRQ handler is installed.
> >
> > Signed-off-by: Chris Wilson <chris@...is-wilson.co.uk>
> 
> I applied both of the patches on top of yesterdays git HEAD and I just
> get a blank screen after GRUB. No serial or net console here. Do you
> want me to try just one of the patches or turn on some debugging
> options?

That was the unspoken side-effect: if we fail to load the i915 module after
disabling the outputs, then we would be left with a blank screen.

If you can ssh in and retrieve the dmesg, then it should at least give a
reason...
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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