From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue, 2 Nov 2010 10:38:58 +0000 (+0000)
Subject: drm/i915: SNB BLT workaround
X-Git-Tag: v2.6.37-rc2~33^2~23^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5588978882b5f4b81169bd7f9bc941e3a12ee8ba;p=pandora-kernel.git

drm/i915: SNB BLT workaround

On some stepping of SNB cpu, the first command to be parsed in BLT
command streamer should be MI_BATCHBUFFER_START otherwise the GPU
may hang.

(cherry picked from commit 8d19215be8254f4f75e9c5a0d28345947b0382db)

Conflicts:

	drivers/gpu/drm/i915/intel_ringbuffer.c
	drivers/gpu/drm/i915/intel_ringbuffer.h

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Cc: stable@kernel.org
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---

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