With the new ducttape of much finer quality, this seems to be no
longer necessary.
Tested on my ivb and snb machine with the usual suspects of testcases.
Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/gpu/drm/i915/i915_irq.c | 11 -----------
1 files changed, 0 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index b9ba180..af54153 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1779,17 +1779,6 @@ static void ironlake_irq_preinstall(struct drm_device *dev)
INIT_WORK(&dev_priv->rps_work, gen6_pm_rps_work);
I915_WRITE(HWSTAM, 0xeffe);
- if (IS_GEN6(dev) || IS_GEN7(dev)) {
- /* Workaround stalls observed on Sandy Bridge GPUs by
- * making the blitter command streamer generate a
- * write to the Hardware Status Page for
- * MI_USER_INTERRUPT. This appears to serialize the
- * previous seqno write out before the interrupt
- * happens.
- */
- I915_WRITE(GEN6_BLITTER_HWSTAM, ~GEN6_BLITTER_USER_INTERRUPT);
- I915_WRITE(GEN6_BSD_HWSTAM, ~GEN6_BSD_USER_INTERRUPT);
- }
/* XXX hotplug from PCH */
--
1.7.7.3
