tree 019ab7330af6c975ffba0d7016e0ed6243fbf6b0
parent 55249baaa5cd188ebd9acdb047eeaed8092e4a93
author Chris Wilson <chris@chris-wilson.co.uk> 1293100838 +0000
committer Chris Wilson <chris@chris-wilson.co.uk> 1294778141 +0000

agp/intel: Flush the chipset write buffers when changing GTT base

Flush the chipset write buffers before and after adjusting the GTT base
register, just in case. We only modify this value upon initialisation
(boot and resume) so there should be no outstanding writes, however
there are always those persistent PGTBL_ER that keep getting reported
upon resume.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>