[PATCH] drm/amdgpu/mes11: make MES_MISC_OP_CHANGE_CONFIG failure non-fatal

[Liu, Shaoyun]

[AMD Official Use Only - AMD Internal Distribution Only]

Looks good to me.

 Reviewed-by: Shaoyun.liu <Shaoyun.liu at amd.com>

-----Original Message-----
From: Deucher, Alexander <Alexander.Deucher at amd.com>
Sent: Wednesday, August 27, 2025 3:03 PM
To: amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>; Liu, Shaoyun <Shaoyun.Liu at amd.com>
Subject: [PATCH] drm/amdgpu/mes11: make MES_MISC_OP_CHANGE_CONFIG failure non-fatal

If the firmware is too old, just warn and return success.

Fixes: 27b791514789 ("drm/amdgpu/mes: keep enforce isolation up to date")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4414
Cc: shaoyun.Liu at amd.com
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/mes_v11_0.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
index 28eb846280dd4..3f6a828cad8ad 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
@@ -641,8 +641,9 @@ static int mes_v11_0_misc_op(struct amdgpu_mes *mes,
                break;
        case MES_MISC_OP_CHANGE_CONFIG:
                if ((mes->adev->mes.sched_version & AMDGPU_MES_VERSION_MASK) < 0x63) {
-                       dev_err(mes->adev->dev, "MES FW version must be larger than 0x63 to support limit single process feature.\n");
-                       return -EINVAL;
+                       dev_warn_once(mes->adev->dev,
+                                     "MES FW version must be larger than 0x63 to support limit single process feature.\n");
+                       return 0;
                }
                misc_pkt.opcode = MESAPI_MISC__CHANGE_CONFIG;
                misc_pkt.change_config.opcode =
--
2.51.0