From: Christian König <christian.koenig@xxxxxxx>
Added with "handle CPU access for split VRAM buffers".
Signed-off-by: Christian König <christian.koenig at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 10b793a..c91f13b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -551,9 +551,9 @@ static unsigned long amdgpu_ttm_io_mem_pfn(struct ttm_buffer_object *bo,
{
struct drm_mm_node *mm = bo->mem.mm_node;
uint64_t size = mm->size;
+ unsigned long offset = page_offset;
- mm += page_offset / size;
- page_offset %= size;
+ page_offset = do_div(offset, size);
return (bo->mem.bus.base >> PAGE_SHIFT) + mm->start + page_offset;
}
--
2.5.0
