From: Zhigang Luo <Zhigang.Luo@amd.com>
Date: Tue, 16 Apr 2024 20:35:14 +0000 (-0400)
Subject: drm/amdgpu: avoid reading vf2pf info size from FB
X-Git-Tag: v5.10.226~172
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e24fa827299e9a743509879b5f72e7f6119fcb6c;p=thirdparty%2Fkernel%2Fstable.git

drm/amdgpu: avoid reading vf2pf info size from FB

[ Upstream commit 3bcc0ee14768d886cedff65da72d83d375a31a56 ]

VF can't access FB when host is doing mode1 reset. Using sizeof to get
vf2pf info size, instead of reading it from vf2pf header stored in FB.

Signed-off-by: Zhigang Luo <Zhigang.Luo@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index bd53844a8ba4d..ca4c915e3a6c7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -552,7 +552,7 @@ static int amdgpu_virt_write_vf2pf_data(struct amdgpu_device *adev)
 
 	vf2pf_info->checksum =
 		amd_sriov_msg_checksum(
-		vf2pf_info, vf2pf_info->header.size, 0, 0);
+		vf2pf_info, sizeof(*vf2pf_info), 0, 0);
 
 	return 0;
 }