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drm/i915: Disable RCS flips on Ivybridge

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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 <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77104
Signed-off-by: Daniel Vetter <[email protected]>
This commit is contained in:
Chris Wilson authored and Daniel Vetter committed 2014-07-08 13:16:02 +02:00
1 parent 78382593e9
commit 2a92d5bca1
1 file changed
+2
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drivers/gpu/drm/i915/intel_display.c
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@@ -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)