From 2a92d5bca1999b69c78f3c3e97b5484985b094b9 Mon Sep 17 00:00:00 2001 From: Chris Wilson 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 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77104 Signed-off-by: Daniel Vetter --- 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)