diff options
| author | Christian König <christian.koenig@amd.com> | 2016-03-10 16:21:04 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-03-14 13:43:09 -0400 |
| commit | 587f3c70aaf07081fb24ac035789836a3f7d9008 (patch) | |
| tree | 28a80f072f9f0198a15690f7aacd3854e184e867 /drivers/gpu | |
| parent | 102534b085c41b278ee30674951c3ebac243645f (diff) | |
| download | linux-587f3c70aaf07081fb24ac035789836a3f7d9008.tar.bz2 | |
drm/amdgpu: always wait before kmap a BO
When a BO is currently moving we otherwise would blindly
access the new location without checking.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 16 |
1 files 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; } |