From: xinhui pan <xinhui.pan@amd.com>
Date: Mon, 22 Mar 2021 00:48:54 +0000 (+0800)
Subject: drm/amdgpu: Use correct size when access vram
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=639979887a11e9c2c5d7e3ce2a560ed16b68854a;p=linux.git

drm/amdgpu: Use correct size when access vram

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

Signed-off-by: xinhui pan <xinhui.pan@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 8f981034d7044..07e72d84e1426 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);