From 587f3c70aaf07081fb24ac035789836a3f7d9008 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Thu, 10 Mar 2016 16:21:04 +0100 Subject: [PATCH] drm/amdgpu: always wait before kmap a BO MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit When a BO is currently moving we otherwise would blindly access the new location without checking. Signed-off-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 9a025a77958d..151a2d42c639 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -308,7 +308,7 @@ int amdgpu_bo_create(struct amdgpu_device *adev, int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr) { bool is_iomem; - int r; + long r; if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS) return -EPERM; @@ -319,14 +319,20 @@ int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr) } return 0; } + + r = reservation_object_wait_timeout_rcu(bo->tbo.resv, false, false, + MAX_SCHEDULE_TIMEOUT); + if (r < 0) + return r; + r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap); - if (r) { + if (r) return r; - } + bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); - if (ptr) { + if (ptr) *ptr = bo->kptr; - } + return 0; } -- 2.20.1