From eee73b46261325eb140d899b5371f49b02d88f63 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue, 10 Jun 2014 12:09:29 +0100
Subject: [PATCH] drm/i95: Initialize active ring->pid to -1

Otherwise we print out spurious processes on unused rings in the error
state.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Reading git-format-patch failed