From: Dave Airlie <airlied@redhat.com>
Date: Thu, 17 Sep 2020 03:20:48 +0000 (+1000)
Subject: drm/ttm: flip tt destroy ordering.
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7626168fd132009c79a0457bccc58014abc738f5;p=linux.git

drm/ttm: flip tt destroy ordering.

Call the driver first and have it call the common code cleanup.

This is useful later to fix unbind.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200917043040.146575-3-airlied@gmail.com
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 2851cf30091a8..dbe3f90a0cf60 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1267,6 +1267,7 @@ static void amdgpu_ttm_backend_destroy(struct ttm_bo_device *bdev,
 {
 	struct amdgpu_ttm_tt *gtt = (void *)ttm;
 
+	ttm_tt_destroy_common(bdev, ttm);
 	if (gtt->usertask)
 		put_task_struct(gtt->usertask);
 
diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c
index f96321509d7eb..50cad0e4a92e3 100644
--- a/drivers/gpu/drm/drm_gem_vram_helper.c
+++ b/drivers/gpu/drm/drm_gem_vram_helper.c
@@ -922,6 +922,7 @@ static const struct drm_gem_object_funcs drm_gem_vram_object_funcs = {
 
 static void bo_driver_ttm_tt_destroy(struct ttm_bo_device *bdev, struct ttm_tt *tt)
 {
+	ttm_tt_destroy_common(bdev, tt);
 	ttm_tt_fini(tt);
 	kfree(tt);
 }
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 616d8844ba973..b239381498c3f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -1372,6 +1372,7 @@ nouveau_ttm_tt_destroy(struct ttm_bo_device *bdev,
 #if IS_ENABLED(CONFIG_AGP)
 	struct nouveau_drm *drm = nouveau_bdev(bdev);
 	if (drm->agp.bridge) {
+		ttm_tt_destroy_common(bdev, ttm);
 		ttm_agp_destroy(ttm);
 		return;
 	}
diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
index 21fb92770ea20..0dfaa6fb536ec 100644
--- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c
+++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
@@ -20,6 +20,7 @@ nouveau_sgdma_destroy(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
 	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
 
 	if (ttm) {
+		ttm_tt_destroy_common(bdev, ttm);
 		ttm_dma_tt_fini(&nvbe->ttm);
 		kfree(nvbe);
 	}
diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c
index bf3b091d0e2ae..fd691fff8394b 100644
--- a/drivers/gpu/drm/qxl/qxl_ttm.c
+++ b/drivers/gpu/drm/qxl/qxl_ttm.c
@@ -130,6 +130,7 @@ static void qxl_ttm_backend_destroy(struct ttm_bo_device *bdev,
 {
 	struct qxl_ttm_tt *gtt = (void *)ttm;
 
+	ttm_tt_destroy_common(bdev, ttm);
 	ttm_tt_fini(&gtt->ttm);
 	kfree(gtt);
 }
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index fc8bbca28b345..76e24c6058fff 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -576,6 +576,8 @@ static void radeon_ttm_backend_destroy(struct ttm_bo_device *bdev, struct ttm_tt
 {
 	struct radeon_ttm_tt *gtt = (void *)ttm;
 
+	ttm_tt_destroy_common(bdev, ttm);
+
 	ttm_dma_tt_fini(&gtt->ttm);
 	kfree(gtt);
 }
@@ -755,6 +757,7 @@ static void radeon_ttm_tt_destroy(struct ttm_bo_device *bdev,
 	struct radeon_device *rdev = radeon_get_rdev(bdev);
 
 	if (rdev->flags & RADEON_IS_AGP) {
+		ttm_tt_destroy_common(bdev, ttm);
 		ttm_agp_destroy(ttm);
 		return;
 	}
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index a4f0296effaca..f43fa69a1e650 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -207,7 +207,7 @@ int ttm_tt_set_placement_caching(struct ttm_tt *ttm, uint32_t placement)
 }
 EXPORT_SYMBOL(ttm_tt_set_placement_caching);
 
-void ttm_tt_destroy(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
+void ttm_tt_destroy_common(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
 {
 	ttm_tt_unpopulate(bdev, ttm);
 
@@ -216,6 +216,11 @@ void ttm_tt_destroy(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
 		fput(ttm->swap_storage);
 
 	ttm->swap_storage = NULL;
+}
+EXPORT_SYMBOL(ttm_tt_destroy_common);
+
+void ttm_tt_destroy(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
+{
 	bdev->driver->ttm_tt_destroy(bdev, ttm);
 }
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
index 01146b27c9a1d..d46426164577c 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
@@ -636,6 +636,7 @@ static void vmw_ttm_destroy(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
 	struct vmw_ttm_tt *vmw_be =
 		container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm);
 
+	ttm_tt_destroy_common(bdev, ttm);
 	vmw_ttm_unmap_dma(vmw_be);
 	if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent)
 		ttm_dma_tt_fini(&vmw_be->dma_ttm);
diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h
index 4e906e32d08cc..75208c0a0cac0 100644
--- a/include/drm/ttm/ttm_tt.h
+++ b/include/drm/ttm/ttm_tt.h
@@ -155,6 +155,13 @@ void ttm_dma_tt_fini(struct ttm_dma_tt *ttm_dma);
  */
 void ttm_tt_destroy(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
 
+/**
+ * ttm_tt_destroy_common:
+ *
+ * Called from driver to destroy common path.
+ */
+void ttm_tt_destroy_common(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
+
 /**
  * ttm_tt_swapin:
  *