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drm/amdgpu: Add comment to function amdgpu_ttm_alloc_gart

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Add comments to refect what function does

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Christian Konig <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Oak Zeng 2020-08-05 10:53:09 -05:00 committed by Alex Deucher
parent ce87c98db4
commit 91b5900507
1 changed files with 6 additions and 1 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
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@ -1155,7 +1155,12 @@ static int amdgpu_ttm_backend_bind(struct ttm_tt *ttm,
}
/**
* amdgpu_ttm_alloc_gart - Allocate GART memory for buffer object
* amdgpu_ttm_alloc_gart - Make sure buffer object is accessible either
* through AGP or GART aperture.
*
* If bo is accessible through AGP aperture, then use AGP aperture
* to access bo; otherwise allocate logical space in GART aperture
* and map bo to GART aperture.
*/
int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
{