From: Felix Kuehling <Felix.Kuehling@amd.com>
Date: Sat, 13 Jul 2019 06:35:37 +0000 (-0400)
Subject: drm/amdgpu: Fix unaligned memory copies
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9288b874c5006a22d1fbff303b812cb03241cdfb;p=linux.git

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 8462934d23eab..9892f13bcbc01 100644
--- 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);