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(parent: d6686f6) | patch
gfx: drv: save/restore gunit registers
authorImre Deak <imre.deak@intel.com>
Tue, 6 Mar 2012 19:17:33 +0000 (21:17 +0200)
committerMarkus Lehtonen <markus.lehtonen@linux.intel.com>
Tue, 3 Jul 2012 09:30:30 +0000 (12:30 +0300)
commit6cf5821f721ac8c0ca0605f161830121677dee1f
tree90295ac1826e271bae75738272a4509ba8c3fa48tree | snapshot
parentd6686f61d3b7c76c257dc9deccb53a536856a2c6commit | diff
gfx: drv: save/restore gunit registers

Missing this lead to the gunit write-combining getting disabled after
an S3 suspend/resume, with a significant performance degradation.

Kudos to Janet He <janet.he@intel.com> and Chan Wilson
<wilson.chan@intel.com> for discovering this.

Issue: GRA-26
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
drivers/staging/mrst/drv/psb_powermgmt.c diff | blob | history
Domain: System / Kernel;