From: Brad Volkin <bradley.d.volkin@intel.com>
Date: Tue, 18 Feb 2014 18:15:55 +0000 (-0800)
Subject: drm/i915: Reject commands that would store to global HWS page
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~44^2~63^2~109
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=114d4f700878405a9fd65a6ade4f981514b82919;p=pandora-kernel.git

drm/i915: Reject commands that would store to global HWS page

PIPE_CONTROL and MI_FLUSH_DW have bits that would write to the
hardware status page. The driver stores request tracking info
there, so don't let userspace overwrite it.

v2: trailing comma fix, rebased

Signed-off-by: Brad Volkin <bradley.d.volkin@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

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