From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Yang Wang <KevinYang.Wang@amd.com>,
        Guchun Chen <guchun.chen@amd.com>,
        Lijo Lazar <lijo.lazar@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>,
        Sasha Levin <sashal@kernel.org>, christian.koenig@amd.com,
        Xinhui.Pan@amd.com, airlied@linux.ie, daniel@ffwll.ch,
        James.Zhu@amd.com, Bokun.Zhang@amd.com, Likun.Gao@amd.com,
        amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: [PATCH AUTOSEL 5.15 59/68] drm/amdgpu: fix byteorder error in amdgpu discovery
Date:   Tue, 30 Nov 2021 09:46:55 -0500
Message-Id: <20211130144707.944580-59-sashal@kernel.org>
In-Reply-To: <20211130144707.944580-1-sashal@kernel.org>
References: <20211130144707.944580-1-sashal@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
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From: Yang Wang <KevinYang.Wang@amd.com>

[ Upstream commit fd08953b2de911f32c06aedbc8ad111c2fd0168b ]

fix some byteorder issues about amdgpu discovery.
This will result in running errors on the big end system. (e.g:MIPS)

Signed-off-by: Yang Wang <KevinYang.Wang@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@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>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
index ada7bc19118ac..a12272a0c8844 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
@@ -190,8 +190,8 @@ static int amdgpu_discovery_init(struct amdgpu_device *adev)
 
 	offset = offsetof(struct binary_header, binary_checksum) +
 		sizeof(bhdr->binary_checksum);
-	size = bhdr->binary_size - offset;
-	checksum = bhdr->binary_checksum;
+	size = le16_to_cpu(bhdr->binary_size) - offset;
+	checksum = le16_to_cpu(bhdr->binary_checksum);
 
 	if (!amdgpu_discovery_verify_checksum(adev->mman.discovery_bin + offset,
 					      size, checksum)) {
@@ -212,7 +212,7 @@ static int amdgpu_discovery_init(struct amdgpu_device *adev)
 	}
 
 	if (!amdgpu_discovery_verify_checksum(adev->mman.discovery_bin + offset,
-					      ihdr->size, checksum)) {
+					      le16_to_cpu(ihdr->size), checksum)) {
 		DRM_ERROR("invalid ip discovery data table checksum\n");
 		r = -EINVAL;
 		goto out;
@@ -224,7 +224,7 @@ static int amdgpu_discovery_init(struct amdgpu_device *adev)
 	ghdr = (struct gpu_info_header *)(adev->mman.discovery_bin + offset);
 
 	if (!amdgpu_discovery_verify_checksum(adev->mman.discovery_bin + offset,
-				              ghdr->size, checksum)) {
+				              le32_to_cpu(ghdr->size), checksum)) {
 		DRM_ERROR("invalid gc data table checksum\n");
 		r = -EINVAL;
 		goto out;
@@ -395,10 +395,10 @@ void amdgpu_discovery_harvest_ip(struct amdgpu_device *adev)
 			le16_to_cpu(bhdr->table_list[HARVEST_INFO].offset));
 
 	for (i = 0; i < 32; i++) {
-		if (le32_to_cpu(harvest_info->list[i].hw_id) == 0)
+		if (le16_to_cpu(harvest_info->list[i].hw_id) == 0)
 			break;
 
-		switch (le32_to_cpu(harvest_info->list[i].hw_id)) {
+		switch (le16_to_cpu(harvest_info->list[i].hw_id)) {
 		case VCN_HWID:
 			vcn_harvest_count++;
 			break;
-- 
2.33.0