linux/drivers/gpu
Zou Nan hai cae5852dca drm/i915/ringbuffer: set FORCE_WAKE bit before reading ring register
Before reading ring register, set FORCE_WAKE bit to prevent GT core
power down to low power state, otherwise we may read stale values.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
[ickle: added a udelay which seemed to do the trick on my SNB]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-11-11 17:45:54 +00:00
..
drm drm/i915/ringbuffer: set FORCE_WAKE bit before reading ring register 2010-11-11 17:45:54 +00:00
stub gpu: Add Intel GMA500(Poulsbo) Stub Driver 2010-10-26 11:00:13 +10:00
vga Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
Makefile gpu: Add Intel GMA500(Poulsbo) Stub Driver 2010-10-26 11:00:13 +10:00