From 5d216f6013d54a6085d5e499407aec6d67e79990 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Wed, 13 Nov 2013 10:23:46 +1000
Subject: [PATCH] drm/nouveau: allow nouveau_fence_ref() to be a noop
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
drivers/gpu/drm/nouveau/nouveau_bo.c | 13 +++----------
drivers/gpu/drm/nouveau/nouveau_fence.c | 3 ++-
drivers/gpu/drm/nouveau/nouveau_gem.c | 6 ++----
3 files changed, 7 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 949ab0cbc4aba..129aceed407de 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -98,12 +98,7 @@ nv10_bo_put_tile_region(struct drm_device *dev, struct nouveau_drm_tile *tile,
if (tile) {
spin_lock(&drm->tile.lock);
- if (fence) {
- /* Mark it as pending. */
- tile->fence = fence;
- nouveau_fence_ref(fence);
- }
-
+ tile->fence = nouveau_fence_ref(fence);
tile->used = false;
spin_unlock(&drm->tile.lock);
}
@@ -1462,14 +1457,12 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm)
void
nouveau_bo_fence(struct nouveau_bo *nvbo, struct nouveau_fence *fence)
{
+ struct nouveau_fence *new_fence = nouveau_fence_ref(fence);
struct nouveau_fence *old_fence = NULL;
- if (likely(fence))
- nouveau_fence_ref(fence);
-
spin_lock(&nvbo->bo.bdev->fence_lock);
old_fence = nvbo->bo.sync_obj;
- nvbo->bo.sync_obj = fence;
+ nvbo->bo.sync_obj = new_fence;
spin_unlock(&nvbo->bo.bdev->fence_lock);
nouveau_fence_unref(&old_fence);
diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c
index 34b82711e7c81..40cf52e6d6d21 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fence.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fence.c
@@ -306,7 +306,8 @@ nouveau_fence_unref(struct nouveau_fence **pfence)
struct nouveau_fence *
nouveau_fence_ref(struct nouveau_fence *fence)
{
- kref_get(&fence->kref);
+ if (fence)
+ kref_get(&fence->kref);
return fence;
}
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index 418a6177a6533..c60f65a815d3e 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -106,8 +106,7 @@ nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
if (mapped) {
spin_lock(&nvbo->bo.bdev->fence_lock);
- if (nvbo->bo.sync_obj)
- fence = nouveau_fence_ref(nvbo->bo.sync_obj);
+ fence = nouveau_fence_ref(nvbo->bo.sync_obj);
spin_unlock(&nvbo->bo.bdev->fence_lock);
}
@@ -438,8 +437,7 @@ validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo)
int ret = 0;
spin_lock(&nvbo->bo.bdev->fence_lock);
- if (nvbo->bo.sync_obj)
- fence = nouveau_fence_ref(nvbo->bo.sync_obj);
+ fence = nouveau_fence_ref(nvbo->bo.sync_obj);
spin_unlock(&nvbo->bo.bdev->fence_lock);
if (fence) {
--
GitLab