ec6a890dfe
...we need to apply exactly the same workaround for missing interrupts
from BSD as for the BLT ring, apparently.
See also commit 498e720b96
(drm/i915: Fix gen6 (SNB) missed BLT ring interrupts).
Reported-and-tested-by: nkalkhof@web.de
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38529
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Keith Packard <keithp@keithp.com>