Commit a94f2b92 authored Mar 08, 2017 by Bing Niu Committed by Ville Syrjälä Mar 08, 2017

drm/i915: suppress atomic commit error message under gvt-g env



under virtualization enviroment, it is possible guest update pipe
registers across vblank intervals due to overhead of mmio traps or vm
schedule out. However, it is safe since those pipe update happen in
virual registers and will not be committed to hardware. suppress that
atomic commit error message under virtualization case to avoid
confusing user.

v2: per ville's comment: return early and against Maarten's patch
v3: coding style clean

Signed-off-by: Bing Niu <bing.niu@intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1489004043-15449-1-git-send-email-bing.niu@intel.com


Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

parent c3f8ad57

drivers/gpu/drm/i915/intel_sprite.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -161,6 +161,7 @@ void intel_pipe_update_end(struct intel_crtc crtc, struct intel_flip_work work
		int scanline_end = intel_get_crtc_scanline(crtc);
		u32 end_vbl_count = intel_crtc_get_vblank_counter(crtc);
		ktime_t end_vbl_time = ktime_get();
		struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);

		if (work) {
		work->flip_queued_vblank = end_vbl_count;
		@@ -186,6 +187,9 @@ void intel_pipe_update_end(struct intel_crtc crtc, struct intel_flip_work work

		local_irq_enable();

		if (intel_vgpu_active(dev_priv))
		return;

		if (crtc->debug.start_vbl_count &&
		crtc->debug.start_vbl_count != end_vbl_count) {
		DRM_ERROR("Atomic update failure on pipe %c (start=%u end=%u) time %lld us, min %d, max %d, scanline start %d, end %d\n",

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