From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Wed, 21 Feb 2018 18:02:33 +0200 Subject: drm/i915: Require fence only for FBC capable planes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Git-commit: 32febd91951eb40d9e9437f10b967c87715d8ef5 Patch-mainline: v4.17-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 As only a subset of primary planes are FBC capable there's no need to waste fences on all of them. So let's skip the fence if the plane isn't even fbc capable. In the future we might extend this to skip the fence even for FBC capable planes if the crtc and/or plane state isn't suitable for FBC. Cc: Chris Wilson Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20180221160235.11134-5-ville.syrjala@linux.intel.com Reviewed-by: Chris Wilson Acked-by: Petr Tesarik --- drivers/gpu/drm/i915/intel_display.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2072,7 +2072,7 @@ static bool intel_plane_uses_fence(const struct intel_plane *plane = to_intel_plane(plane_state->base.plane); struct drm_i915_private *dev_priv = to_i915(plane->base.dev); - return INTEL_GEN(dev_priv) < 4 || plane->id == PLANE_PRIMARY; + return INTEL_GEN(dev_priv) < 4 || plane->has_fbc; } struct i915_vma *