From 2a92d5bca1999b69c78f3c3e97b5484985b094b9 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue, 8 Jul 2014 10:40:29 +0100
Subject: [PATCH] drm/i915: Disable RCS flips on Ivybridge
We currently see random GPU hangs when using RCS flips with multiple
pipes on Ivybridge. Now that we have mmio flips, we can fairly cheaply
fallback to using CPU driven flips instead.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77104
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/gpu/drm/i915/intel_display.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 8043e4b51ecd..8728c8885339 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9658,6 +9658,8 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
if (IS_VALLEYVIEW(dev)) {
ring = &dev_priv->ring[BCS];
+ } else if (IS_IVYBRIDGE(dev)) {
+ ring = &dev_priv->ring[BCS];
} else if (INTEL_INFO(dev)->gen >= 7) {
ring = obj->ring;
if (ring == NULL || ring->id != RCS)
--
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