drm/amdgpu/virtual_dce: No need to pin the fb's bo

For virtual display, no need to pin the fb's bo.
Signed-off-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_display.c

@@ -188,11 +188,13 @@ int amdgpu_display_crtc_page_flip_target(struct drm_crtc *crtc,
 		goto cleanup;
 	}
 
+	if (!adev->enable_virtual_display) {
 		r = amdgpu_bo_pin(new_abo, amdgpu_display_supported_domains(adev));
 		if (unlikely(r != 0)) {
 			DRM_ERROR("failed to pin new abo buffer before flip\n");
 			goto unreserve;
 		}
+	}
 
 	r = amdgpu_ttm_alloc_gart(&new_abo->tbo);
 	if (unlikely(r != 0)) {
@@ -211,6 +213,7 @@ int amdgpu_display_crtc_page_flip_target(struct drm_crtc *crtc,
 	amdgpu_bo_get_tiling_flags(new_abo, &tiling_flags);
 	amdgpu_bo_unreserve(new_abo);
 
+	if (!adev->enable_virtual_display)
 		work->base = amdgpu_bo_gpu_offset(new_abo);
 	work->target_vblank = target - (uint32_t)drm_crtc_vblank_count(crtc) +
 		amdgpu_get_vblank_counter_kms(dev, work->crtc_id);
@@ -242,9 +245,10 @@ int amdgpu_display_crtc_page_flip_target(struct drm_crtc *crtc,
 		goto cleanup;
 	}
 unpin:
-	if (unlikely(amdgpu_bo_unpin(new_abo) != 0)) {
+	if (!adev->enable_virtual_display)
+		if (unlikely(amdgpu_bo_unpin(new_abo) != 0))
 			DRM_ERROR("failed to unpin new abo in error path\n");
-	}
+
 unreserve:
 	amdgpu_bo_unreserve(new_abo);
 

drivers/gpu/drm/amd/amdgpu/dce_virtual.c

@@ -167,19 +167,6 @@ static void dce_virtual_crtc_disable(struct drm_crtc *crtc)
 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 
 	dce_virtual_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
-	if (crtc->primary->fb) {
-		int r;
-		struct amdgpu_bo *abo;
-
-		abo = gem_to_amdgpu_bo(crtc->primary->fb->obj[0]);
-		r = amdgpu_bo_reserve(abo, true);
-		if (unlikely(r))
-			DRM_ERROR("failed to reserve abo before unpin\n");
-		else {
-			amdgpu_bo_unpin(abo);
-			amdgpu_bo_unreserve(abo);
-		}
-	}
 
 	amdgpu_crtc->pll_id = ATOM_PPLL_INVALID;
 	amdgpu_crtc->encoder = NULL;
@@ -692,7 +679,9 @@ static int dce_virtual_pageflip(struct amdgpu_device *adev,
 	spin_unlock_irqrestore(&adev->ddev->event_lock, flags);
 
 	drm_crtc_vblank_put(&amdgpu_crtc->base);
-	schedule_work(&works->unpin_work);
+	amdgpu_bo_unref(&works->old_abo);
+	kfree(works->shared);
+	kfree(works);
 
 	return 0;
 }