Merge tag 'drm-xe-next-fixes-2026-01-29' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-next

- Reduce LRC timestamp stuck message on VFs to notice (Brost)
- Disable GuC Power DCC strategy on PTL (Vinay)
- Unregister drm device on probe error (Lin)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/aXuyrtsnlAOmj_OB@intel.com

Author: airlied

drivers/gpu/drm/xe/xe_device.c

@@ -1017,6 +1017,7 @@ int xe_device_probe(struct xe_device *xe)
 
 err_unregister_display:
 	xe_display_unregister(xe);
+	drm_dev_unregister(&xe->drm);
 
 	return err;
 }

drivers/gpu/drm/xe/xe_guc_pc.c

@@ -1198,6 +1198,36 @@ int xe_guc_pc_set_power_profile(struct xe_guc_pc *pc, const char *buf)
 	return ret;
 }
 
+static int pc_action_set_dcc(struct xe_guc_pc *pc, bool enable)
+{
+	int ret;
+
+	ret = pc_action_set_param(pc,
+				  SLPC_PARAM_TASK_ENABLE_DCC,
+				  enable);
+	if (!ret)
+		return pc_action_set_param(pc,
+					   SLPC_PARAM_TASK_DISABLE_DCC,
+					   !enable);
+	else
+		return ret;
+}
+
+static int pc_modify_defaults(struct xe_guc_pc *pc)
+{
+	struct xe_device *xe = pc_to_xe(pc);
+	struct xe_gt *gt = pc_to_gt(pc);
+	int ret = 0;
+
+	if (xe->info.platform == XE_PANTHERLAKE) {
+		ret = pc_action_set_dcc(pc, false);
+		if (unlikely(ret))
+			xe_gt_err(gt, "Failed to modify DCC default: %pe\n", ERR_PTR(ret));
+	}
+
+	return ret;
+}
+
 /**
  * xe_guc_pc_start - Start GuC's Power Conservation component
  * @pc: Xe_GuC_PC instance
@@ -1249,6 +1279,10 @@ int xe_guc_pc_start(struct xe_guc_pc *pc)
 			   ktime_ms_delta(ktime_get(), earlier));
 	}
 
+	ret = pc_modify_defaults(pc);
+	if (ret)
+		return ret;
+
 	ret = pc_init_freqs(pc);
 	if (ret)
 		return ret;

drivers/gpu/drm/xe/xe_guc_submit.c

@@ -1317,9 +1317,14 @@ static bool check_timeout(struct xe_exec_queue *q, struct xe_sched_job *job)
 
 	ctx_timestamp = lower_32_bits(xe_lrc_timestamp(q->lrc[0]));
 	if (ctx_timestamp == job->sample_timestamp) {
-		xe_gt_warn(gt, "Check job timeout: seqno=%u, lrc_seqno=%u, guc_id=%d, timestamp stuck",
-			   xe_sched_job_seqno(job), xe_sched_job_lrc_seqno(job),
-			   q->guc->id);
+		if (IS_SRIOV_VF(gt_to_xe(gt)))
+			xe_gt_notice(gt, "Check job timeout: seqno=%u, lrc_seqno=%u, guc_id=%d, timestamp stuck",
+				     xe_sched_job_seqno(job),
+				     xe_sched_job_lrc_seqno(job), q->guc->id);
+		else
+			xe_gt_warn(gt, "Check job timeout: seqno=%u, lrc_seqno=%u, guc_id=%d, timestamp stuck",
+				   xe_sched_job_seqno(job),
+				   xe_sched_job_lrc_seqno(job), q->guc->id);
 
 		return xe_sched_invalidate_job(job, 0);
 	}