[PATCH 4/8] drm/amdgpu: use new cursor in amdgpu_ttm_io_mem_pfn

[Christian König]

Separate the drm_mm_node walking from the actual handling.

Signed-off-by: Christian König <christian.koenig at amd.com>
Acked-by: Oak Zeng <Oak.Zeng at amd.com>
Tested-by: Nirmoy Das <nirmoy.das at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 8 +++-----
 1 file 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 365d5693f5f0..517611b709fa 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -631,12 +631,10 @@ static unsigned long amdgpu_ttm_io_mem_pfn(struct ttm_buffer_object *bo,
 					   unsigned long page_offset)
 {
 	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
-	uint64_t offset = (page_offset << PAGE_SHIFT);
-	struct drm_mm_node *mm;
+	struct amdgpu_res_cursor cursor;
 
-	mm = amdgpu_find_mm_node(&bo->mem, &offset);
-	offset += adev->gmc.aper_base;
-	return mm->start + (offset >> PAGE_SHIFT);
+	amdgpu_res_first(&bo->mem, (u64)page_offset << PAGE_SHIFT, 0, &cursor);
+	return (adev->gmc.aper_base + cursor.start) >> PAGE_SHIFT;
 }
 
 /**
-- 
2.25.1