From 08bb88cfc4f0c5ac9053197ced139bf116a91280 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Tue, 28 Jul 2020 14:00:03 +1000 Subject: [PATCH] drm/ttm: make ttm_tt unbind function return void. MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The return value just led to BUG_ON, I think if a driver wants to BUG_ON here it can do it itself. (don't BUG_ON). Reviewed-by: Christian König Signed-off-by: Dave Airlie Link: https://patchwork.freedesktop.org/patch/msgid/20200728040003.20398-1-airlied@gmail.com --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 5 ++--- drivers/gpu/drm/nouveau/nouveau_sgdma.c | 3 +-- drivers/gpu/drm/qxl/qxl_ttm.c | 3 +-- drivers/gpu/drm/radeon/radeon_ttm.c | 4 +--- drivers/gpu/drm/ttm/ttm_agp_backend.c | 9 +++++---- drivers/gpu/drm/ttm/ttm_tt.c | 5 +---- drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 4 +--- include/drm/ttm/ttm_tt.h | 2 +- 8 files changed, 13 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index fcff5671f6f8..e11c5d69843d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -1292,7 +1292,7 @@ int amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo) * Called by ttm_tt_unbind() on behalf of ttm_bo_move_ttm() and * ttm_tt_destroy(). */ -static int amdgpu_ttm_backend_unbind(struct ttm_tt *ttm) +static void amdgpu_ttm_backend_unbind(struct ttm_tt *ttm) { struct amdgpu_device *adev = amdgpu_ttm_adev(ttm->bdev); struct amdgpu_ttm_tt *gtt = (void *)ttm; @@ -1303,14 +1303,13 @@ static int amdgpu_ttm_backend_unbind(struct ttm_tt *ttm) amdgpu_ttm_tt_unpin_userptr(ttm); if (gtt->offset == AMDGPU_BO_INVALID_OFFSET) - return 0; + return; /* unbind shouldn't be done for GDS/GWS/OA in ttm_bo_clean_mm */ r = amdgpu_gart_unbind(adev, gtt->offset, ttm->num_pages); if (r) DRM_ERROR("failed to unbind %lu pages at 0x%08llX\n", gtt->ttm.ttm.num_pages, gtt->offset); - return r; } static void amdgpu_ttm_backend_destroy(struct ttm_tt *ttm) diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c index feaac908efed..20b6d0b3de5c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c +++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c @@ -46,12 +46,11 @@ nv04_sgdma_bind(struct ttm_tt *ttm, struct ttm_mem_reg *reg) return 0; } -static int +static void nv04_sgdma_unbind(struct ttm_tt *ttm) { struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm; nouveau_mem_fini(nvbe->mem); - return 0; } static struct ttm_backend_func nv04_sgdma_backend = { diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c index 1d8e07b8b19e..bf9dc451583a 100644 --- a/drivers/gpu/drm/qxl/qxl_ttm.c +++ b/drivers/gpu/drm/qxl/qxl_ttm.c @@ -149,10 +149,9 @@ static int qxl_ttm_backend_bind(struct ttm_tt *ttm, return -1; } -static int qxl_ttm_backend_unbind(struct ttm_tt *ttm) +static void qxl_ttm_backend_unbind(struct ttm_tt *ttm) { /* Not implemented */ - return -1; } static void qxl_ttm_backend_destroy(struct ttm_tt *ttm) diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c index 54af06df865b..004344dce140 100644 --- a/drivers/gpu/drm/radeon/radeon_ttm.c +++ b/drivers/gpu/drm/radeon/radeon_ttm.c @@ -591,7 +591,7 @@ static int radeon_ttm_backend_bind(struct ttm_tt *ttm, return 0; } -static int radeon_ttm_backend_unbind(struct ttm_tt *ttm) +static void radeon_ttm_backend_unbind(struct ttm_tt *ttm) { struct radeon_ttm_tt *gtt = (void *)ttm; @@ -599,8 +599,6 @@ static int radeon_ttm_backend_unbind(struct ttm_tt *ttm) if (gtt->userptr) radeon_ttm_tt_unpin_userptr(ttm); - - return 0; } static void radeon_ttm_backend_destroy(struct ttm_tt *ttm) diff --git a/drivers/gpu/drm/ttm/ttm_agp_backend.c b/drivers/gpu/drm/ttm/ttm_agp_backend.c index 6050dc846894..38f1351140e2 100644 --- a/drivers/gpu/drm/ttm/ttm_agp_backend.c +++ b/drivers/gpu/drm/ttm/ttm_agp_backend.c @@ -82,17 +82,18 @@ static int ttm_agp_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem) return ret; } -static int ttm_agp_unbind(struct ttm_tt *ttm) +static void ttm_agp_unbind(struct ttm_tt *ttm) { struct ttm_agp_backend *agp_be = container_of(ttm, struct ttm_agp_backend, ttm); if (agp_be->mem) { - if (agp_be->mem->is_bound) - return agp_unbind_memory(agp_be->mem); + if (agp_be->mem->is_bound) { + agp_unbind_memory(agp_be->mem); + return; + } agp_free_memory(agp_be->mem); agp_be->mem = NULL; } - return 0; } static void ttm_agp_destroy(struct ttm_tt *ttm) diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index e25d4097aa16..bab67873cfd4 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -313,11 +313,8 @@ EXPORT_SYMBOL(ttm_dma_tt_fini); void ttm_tt_unbind(struct ttm_tt *ttm) { - int ret; - if (ttm->state == tt_bound) { - ret = ttm->func->unbind(ttm); - BUG_ON(ret); + ttm->func->unbind(ttm); ttm->state = tt_unbound; } } diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c index 1d78187eaba6..ab524ab3b0b4 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c @@ -610,7 +610,7 @@ static int vmw_ttm_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem) return 0; } -static int vmw_ttm_unbind(struct ttm_tt *ttm) +static void vmw_ttm_unbind(struct ttm_tt *ttm) { struct vmw_ttm_tt *vmw_be = container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); @@ -628,8 +628,6 @@ static int vmw_ttm_unbind(struct ttm_tt *ttm) if (vmw_be->dev_priv->map_mode == vmw_dma_map_bind) vmw_ttm_unmap_dma(vmw_be); - - return 0; } diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h index c0e928abf592..5e2393fe42c6 100644 --- a/include/drm/ttm/ttm_tt.h +++ b/include/drm/ttm/ttm_tt.h @@ -70,7 +70,7 @@ struct ttm_backend_func { * Unbind previously bound backend pages. This function should be * able to handle differences between aperture and system page sizes. */ - int (*unbind) (struct ttm_tt *ttm); + void (*unbind) (struct ttm_tt *ttm); /** * struct ttm_backend_func member destroy -- 2.11.0