linux-kernel - [PATCH AUTOSEL 6.2 11/60] drm/amd: Avoid BUG() for case of SRIOV missing IP version

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Date:   Sun, 26 Feb 2023 20:59:56 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Mario Limonciello <mario.limonciello@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Lijo Lazar <lijo.lazar@....com>,
        Sasha Levin <sashal@...nel.org>, christian.koenig@....com,
        Xinhui.Pan@....com, airlied@...il.com, daniel@...ll.ch,
        Hawking.Zhang@....com, Likun.Gao@....com, guchun.chen@....com,
        candice.li@....com, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.2 11/60] drm/amd: Avoid BUG() for case of SRIOV missing IP version

From: Mario Limonciello <mario.limonciello@....com>

[ Upstream commit 93fec4f8c158584065134b4d45e875499bf517c8 ]

No need to crash the kernel.  AMDGPU will now fail to probe.

Reviewed-by: Alex Deucher <alexander.deucher@....com>
Reviewed-by: Lijo Lazar <lijo.lazar@....com>
Signed-off-by: Mario Limonciello <mario.limonciello@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 7a2fc920739bb..ba092072308fa 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -380,7 +380,7 @@ static int psp_init_sriov_microcode(struct psp_context *psp)
 		adev->virt.autoload_ucode_id = AMDGPU_UCODE_ID_CP_MES1_DATA;
 		break;
 	default:
-		BUG();
+		ret = -EINVAL;
 		break;
 	}
 	return ret;
-- 
2.39.0