linux-kernel - Re: [PATCH] drm/i915/sdvo: If at first we dont succeed in reading the response, wait

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Date:	Tue, 25 Jan 2011 22:11:03 +0000
From:	Chris Wilson <chris@...is-wilson.co.uk>
To:	Knut Petersen <Knut_Petersen@...nline.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/i915/sdvo: If at first we dont succeed in reading the response, wait

On Tue, 25 Jan 2011 23:01:45 +0100, Knut Petersen <Knut_Petersen@...nline.de> wrote:
> I think that patch also should be a candidate for 2.6.37.1 as it fixes a
> regression
> introduced in 2.6.37.

(Actually I think the bug is older than that...)

> Something new:
> 
> Have a look at the attached new log.  I connected a 2nd monitor, so
> there is a monitor attached to both
> the VGA-1 and DVI-1 connectors. At the framebuffer console prompt (no X
> running)
> I changed to console 2 and back to console 1. The log starts at the
> point of switching
> back to console 1. Now ... shouldn't I read something about a
> output_poll_execute for VGA-1?

In this case, no. VGA-1 has hw hotplug support, so that connector is not
polled but uses an interrupt instead.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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