drm/amdgpu: skip SMU FW reloading in runpm BACO case

SMU is always alive, so it's fine to skip SMU FW reloading
when runpm resumed from BACO, this can avoid some race issues
when resuming SMU.
Suggested-by: NEvan Quan <evan.quan@amd.com>
Signed-off-by: NGuchun Chen <guchun.chen@amd.com>
Reviewed-by: NLijo Lazar <lijo.lazar@amd.com>
Reviewed-by: NEvan Quan <evan.quan@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c

@@ -2348,6 +2348,13 @@ static int psp_load_smu_fw(struct psp_context *psp)
 			&adev->firmware.ucode[AMDGPU_UCODE_ID_SMC];
 	struct amdgpu_ras *ras = psp->ras_context.ras;
 
+	/*
+	 * Skip SMU FW reloading in case of using BACO for runpm only,
+	 * as SMU is always alive.
+	 */
+	if (adev->in_runpm && (adev->pm.rpm_mode == AMDGPU_RUNPM_BACO))
+		return 0;
+
 	if (!ucode->fw || amdgpu_sriov_vf(psp->adev))
 		return 0;