drm/i915: Use masked write for Context Status Buffer Pointer
authorMika Kuoppala <mika.kuoppala@linux.intel.com>
Thu, 6 Aug 2015 14:00:59 +0000 (17:00 +0300)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 14 Aug 2015 15:50:38 +0000 (17:50 +0200)
commitcc53699b25b59eb1020af8064f99edd0014b7071
treed765423d428f05c019b467af8c9e55c8a9109a19
parent9bd9dfb4f9a1edcbb561a80d00c234fbe11dc1a6
drm/i915: Use masked write for Context Status Buffer Pointer

This register needs to be updated with masked writes.

This was found by code inspection and comparison with Bspec and
doesn't seem to fix any known issue.

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
[danvet: Add note about impact.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/intel_lrc.c