drm/amdgpu: Fix unaligned memory copies

When starting a new mm_node, the page_offset becomes 0.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 8462934d23eabf7ac486c1240e9d4da5117a9d37..9892f13bcbc0107aad76943a90ffc8017e2168e4 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -391,6 +391,7 @@ int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
                        src_node_start = amdgpu_mm_node_addr(src->bo, ++src_mm,
                                                             src->mem);
                        src_node_size = (src_mm->size << PAGE_SHIFT);
+                       src_page_offset = 0;
                } else {
                        src_node_start += cur_size;
                        src_page_offset = src_node_start & (PAGE_SIZE - 1);
@@ -400,6 +401,7 @@ int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
                        dst_node_start = amdgpu_mm_node_addr(dst->bo, ++dst_mm,
                                                             dst->mem);
                        dst_node_size = (dst_mm->size << PAGE_SHIFT);
+                       dst_page_offset = 0;
                } else {
                        dst_node_start += cur_size;
                        dst_page_offset = dst_node_start & (PAGE_SIZE - 1);