From 14b4434bff1aab69f3785bc67276efbff7fffa3d Mon Sep 17 00:00:00 2001
From: Zhenyu Wang <zhenyuw@linux.intel.com>
Date: Mon, 15 Jan 2018 16:36:11 +0800
Subject: [PATCH] drm/i915/gvt: cancel virtual vblank timer when no vGPU exists
Git-commit: 14b4434bff1aab69f3785bc67276efbff7fffa3d
Patch-mainline: v4.16-rc1
References: FATE#322643 bsc#1055900
Stop irq timer for virtual vblank timer emulation if no vGPU exists,
otherwise it will keep gvt service thread busy to handle virtual vblank
but no use.
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/i915/gvt/vgpu.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/i915/gvt/vgpu.c
+++ b/drivers/gpu/drm/i915/gvt/vgpu.c
@@ -258,6 +258,8 @@ void intel_gvt_destroy_vgpu(struct intel
intel_gvt_debugfs_remove_vgpu(vgpu);
idr_remove(&gvt->vgpu_idr, vgpu->id);
+ if (idr_is_empty(&gvt->vgpu_idr))
+ intel_gvt_clean_irq(gvt);
intel_vgpu_clean_sched_policy(vgpu);
intel_vgpu_clean_submission(vgpu);
intel_vgpu_clean_display(vgpu);