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drm/amdgpu: add err check for pin userptr 

Missing error check if the operation failed.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Chunming Zhou 2015-11-26 16:33:58 +08:00 committed by Alex Deucher
parent 0c62c6599b
commit e2f784fa8a
1 changed files with 7 additions and 3 deletions
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10
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
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@ -587,9 +587,13 @@ static int amdgpu_ttm_backend_bind(struct ttm_tt *ttm,
uint32_t flags = amdgpu_ttm_tt_pte_flags(gtt->adev, ttm, bo_mem);
int r;
if (gtt->userptr)
amdgpu_ttm_tt_pin_userptr(ttm);
if (gtt->userptr) {
r = amdgpu_ttm_tt_pin_userptr(ttm);
if (r) {
DRM_ERROR("failed to pin userptr\n");
return r;
}
}
gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
if (!ttm->num_pages) {
WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",