diff options
| author | monk.liu <monk.liu@amd.com> | 2015-05-07 14:19:18 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-05-07 14:19:18 -0400 |
| commit | 174adb0458885436f080113d04e0f4a6f09a9cea (patch) | |
| tree | 67d390d021ea0a7b0cf47a45e485fefa3f2e14ab | |
| parent | 9870cacdb5461d334c33798157d48b25fa897afd (diff) | |
drm/amdgpu: fix userptr BO unpin bug (v2)
sg could point to array of contigiouse page*, only free page could lead
to memory leak.
v2: use iterator
Signed-off-by: monk.liu <monk.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 120e6e7c4647..729e0bb3070f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -555,8 +555,7 @@ static void amdgpu_ttm_tt_unpin_userptr(struct ttm_tt *ttm) { struct amdgpu_device *adev = amdgpu_get_adev(ttm->bdev); struct amdgpu_ttm_tt *gtt = (void *)ttm; - struct scatterlist *sg; - int i; + struct sg_page_iter sg_iter; int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY); enum dma_data_direction direction = write ? @@ -569,9 +568,8 @@ static void amdgpu_ttm_tt_unpin_userptr(struct ttm_tt *ttm) /* free the sg table and pages again */ dma_unmap_sg(adev->dev, ttm->sg->sgl, ttm->sg->nents, direction); - for_each_sg(ttm->sg->sgl, sg, ttm->sg->nents, i) { - struct page *page = sg_page(sg); - + for_each_sg_page(ttm->sg->sgl, &sg_iter, ttm->sg->nents, 0) { + struct page *page = sg_page_iter_page(&sg_iter); if (!(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY)) set_page_dirty(page); |