[PATCH] drm/amdgpu: Use correct size when access vram

[xinhui pan]

To make size is 4 byte aligned. Use &~0x3ULL instead of &3ULL.

Signed-off-by: xinhui pan <xinhui.pan at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 6d5cf0525325..41a4c456961c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1503,7 +1503,7 @@ static int amdgpu_ttm_access_memory(struct ttm_buffer_object *bo,
 				memcpy(buf, &value, bytes);
 			}
 		} else {
-			bytes = cursor.size & 0x3ull;
+			bytes = cursor.size & ~0x3ULL;
 			amdgpu_device_vram_access(adev, cursor.start,
 						  (uint32_t *)buf, bytes,
 						  write);
-- 
2.25.1