From: Ben Skeggs <bskeggs@redhat.com>
Date: Mon, 6 May 2013 22:33:10 +0000 (+1000)
Subject: drm/nouveau: ensure channels are stopped before saving fences for suspend
X-Git-Tag: submit/tizen_common/20140905.094502~2763^2^2~4
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=81dff21b643f48c14010a97ffc799e1920d751e5;p=sdk%2Femulator%2Femulator-kernel.git

drm/nouveau: ensure channels are stopped before saving fences for suspend

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---

diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 46c152f..383f4e6 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -453,18 +453,32 @@ nouveau_do_suspend(struct drm_device *dev)
 	NV_INFO(drm, "evicting buffers...\n");
 	ttm_bo_evict_mm(&drm->ttm.bdev, TTM_PL_VRAM);
 
+	NV_INFO(drm, "waiting for kernel channels to go idle...\n");
+	if (drm->cechan) {
+		ret = nouveau_channel_idle(drm->cechan);
+		if (ret)
+			return ret;
+	}
+
+	if (drm->channel) {
+		ret = nouveau_channel_idle(drm->channel);
+		if (ret)
+			return ret;
+	}
+
+	NV_INFO(drm, "suspending client object trees...\n");
 	if (drm->fence && nouveau_fence(drm)->suspend) {
 		if (!nouveau_fence(drm)->suspend(drm))
 			return -ENOMEM;
 	}
 
-	NV_INFO(drm, "suspending client object trees...\n");
 	list_for_each_entry(cli, &drm->clients, head) {
 		ret = nouveau_client_fini(&cli->base, true);
 		if (ret)
 			goto fail_client;
 	}
 
+	NV_INFO(drm, "suspending kernel object tree...\n");
 	ret = nouveau_client_fini(&drm->client.base, true);
 	if (ret)
 		goto fail_client;
@@ -514,17 +528,18 @@ nouveau_do_resume(struct drm_device *dev)
 
 	nouveau_agp_reset(drm);
 
-	NV_INFO(drm, "resuming client object trees...\n");
+	NV_INFO(drm, "resuming kernel object tree...\n");
 	nouveau_client_init(&drm->client.base);
 	nouveau_agp_init(drm);
 
+	NV_INFO(drm, "resuming client object trees...\n");
+	if (drm->fence && nouveau_fence(drm)->resume)
+		nouveau_fence(drm)->resume(drm);
+
 	list_for_each_entry(cli, &drm->clients, head) {
 		nouveau_client_init(&cli->base);
 	}
 
-	if (drm->fence && nouveau_fence(drm)->resume)
-		nouveau_fence(drm)->resume(drm);
-
 	nouveau_run_vbios_init(dev);
 	nouveau_pm_resume(dev);