- Skip GuC communication warning if reset is in progress (Zhanjun)

- Couple frontbuffer related fixes (Ville)
 - Deactivate PSR only on LNL and when selective fetch enabled (Jouni)
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Merge tag 'drm-intel-fixes-2025-10-16' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-fixes

- Skip GuC communication warning if reset is in progress (Zhanjun)
- Couple frontbuffer related fixes (Ville)
- Deactivate PSR only on LNL and when selective fetch enabled (Jouni)

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

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/aPDoguxlhXlvjNAi@intel.com

drivers/gpu/drm/i915/display/intel_fb.c

@@ -2113,10 +2113,10 @@ static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
 	if (intel_fb_uses_dpt(fb))
 		intel_dpt_destroy(intel_fb->dpt_vm);
 
-	intel_frontbuffer_put(intel_fb->frontbuffer);
-
 	intel_fb_bo_framebuffer_fini(intel_fb_bo(fb));
 
+	intel_frontbuffer_put(intel_fb->frontbuffer);
+
 	kfree(intel_fb);
 }
 
@@ -2218,15 +2218,17 @@ int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 	int ret = -EINVAL;
 	int i;
 
+	/*
+	 * intel_frontbuffer_get() must be done before
+	 * intel_fb_bo_framebuffer_init() to avoid set_tiling vs. addfb race.
+	 */
+	intel_fb->frontbuffer = intel_frontbuffer_get(obj);
+	if (!intel_fb->frontbuffer)
+		return -ENOMEM;
+
 	ret = intel_fb_bo_framebuffer_init(fb, obj, mode_cmd);
 	if (ret)
-		return ret;
-
-	intel_fb->frontbuffer = intel_frontbuffer_get(obj);
-	if (!intel_fb->frontbuffer) {
-		ret = -ENOMEM;
-		goto err;
-	}
+		goto err_frontbuffer_put;
 
 	ret = -EINVAL;
 	if (!drm_any_plane_has_format(display->drm,
@@ -2235,7 +2237,7 @@ int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 		drm_dbg_kms(display->drm,
 			    "unsupported pixel format %p4cc / modifier 0x%llx\n",
 			    &mode_cmd->pixel_format, mode_cmd->modifier[0]);
-		goto err_frontbuffer_put;
+		goto err_bo_framebuffer_fini;
 	}
 
 	max_stride = intel_fb_max_stride(display, mode_cmd->pixel_format,
@@ -2246,7 +2248,7 @@ int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 			    mode_cmd->modifier[0] != DRM_FORMAT_MOD_LINEAR ?
 			    "tiled" : "linear",
 			    mode_cmd->pitches[0], max_stride);
-		goto err_frontbuffer_put;
+		goto err_bo_framebuffer_fini;
 	}
 
 	/* FIXME need to adjust LINOFF/TILEOFF accordingly. */
@@ -2254,7 +2256,7 @@ int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 		drm_dbg_kms(display->drm,
 			    "plane 0 offset (0x%08x) must be 0\n",
 			    mode_cmd->offsets[0]);
-		goto err_frontbuffer_put;
+		goto err_bo_framebuffer_fini;
 	}
 
 	drm_helper_mode_fill_fb_struct(display->drm, fb, info, mode_cmd);
@@ -2264,7 +2266,7 @@ int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 
 		if (mode_cmd->handles[i] != mode_cmd->handles[0]) {
 			drm_dbg_kms(display->drm, "bad plane %d handle\n", i);
-			goto err_frontbuffer_put;
+			goto err_bo_framebuffer_fini;
 		}
 
 		stride_alignment = intel_fb_stride_alignment(fb, i);
@@ -2272,7 +2274,7 @@ int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 			drm_dbg_kms(display->drm,
 				    "plane %d pitch (%d) must be at least %u byte aligned\n",
 				    i, fb->pitches[i], stride_alignment);
-			goto err_frontbuffer_put;
+			goto err_bo_framebuffer_fini;
 		}
 
 		if (intel_fb_is_gen12_ccs_aux_plane(fb, i)) {
@@ -2282,7 +2284,7 @@ int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 				drm_dbg_kms(display->drm,
 					    "ccs aux plane %d pitch (%d) must be %d\n",
 					    i, fb->pitches[i], ccs_aux_stride);
-				goto err_frontbuffer_put;
+				goto err_bo_framebuffer_fini;
 			}
 		}
 
@@ -2291,7 +2293,7 @@ int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 
 	ret = intel_fill_fb_info(display, intel_fb);
 	if (ret)
-		goto err_frontbuffer_put;
+		goto err_bo_framebuffer_fini;
 
 	if (intel_fb_uses_dpt(fb)) {
 		struct i915_address_space *vm;
@@ -2317,10 +2319,10 @@ int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 err_free_dpt:
 	if (intel_fb_uses_dpt(fb))
 		intel_dpt_destroy(intel_fb->dpt_vm);
+err_bo_framebuffer_fini:
+	intel_fb_bo_framebuffer_fini(obj);
 err_frontbuffer_put:
 	intel_frontbuffer_put(intel_fb->frontbuffer);
-err:
-	intel_fb_bo_framebuffer_fini(obj);
 	return ret;
 }
 

drivers/gpu/drm/i915/display/intel_frontbuffer.c

@@ -270,6 +270,8 @@ static void frontbuffer_release(struct kref *ref)
 	spin_unlock(&display->fb_tracking.lock);
 
 	i915_active_fini(&front->write);
+
+	drm_gem_object_put(obj);
 	kfree_rcu(front, rcu);
 }
 
@@ -287,6 +289,8 @@ intel_frontbuffer_get(struct drm_gem_object *obj)
 	if (!front)
 		return NULL;
 
+	drm_gem_object_get(obj);
+
 	front->obj = obj;
 	kref_init(&front->ref);
 	atomic_set(&front->bits, 0);
@@ -299,8 +303,12 @@ intel_frontbuffer_get(struct drm_gem_object *obj)
 	spin_lock(&display->fb_tracking.lock);
 	cur = intel_bo_set_frontbuffer(obj, front);
 	spin_unlock(&display->fb_tracking.lock);
-	if (cur != front)
+
+	if (cur != front) {
+		drm_gem_object_put(obj);
 		kfree(front);
+	}
+
 	return cur;
 }
 

drivers/gpu/drm/i915/display/intel_psr.c

@@ -3402,6 +3402,7 @@ static void _psr_flush_handle(struct intel_dp *intel_dp)
 	struct intel_display *display = to_intel_display(intel_dp);
 
 	if (DISPLAY_VER(display) < 20 && intel_dp->psr.psr2_sel_fetch_enabled) {
+		/* Selective fetch prior LNL */
 		if (intel_dp->psr.psr2_sel_fetch_cff_enabled) {
 			/* can we turn CFF off? */
 			if (intel_dp->psr.busy_frontbuffer_bits == 0)
@@ -3420,12 +3421,19 @@ static void _psr_flush_handle(struct intel_dp *intel_dp)
 		intel_psr_configure_full_frame_update(intel_dp);
 
 		intel_psr_force_update(intel_dp);
+	} else if (!intel_dp->psr.psr2_sel_fetch_enabled) {
+		/*
+		 * PSR1 on all platforms
+		 * PSR2 HW tracking
+		 * Panel Replay Full frame update
+		 */
+		intel_psr_force_update(intel_dp);
 	} else {
+		/* Selective update LNL onwards */
 		intel_psr_exit(intel_dp);
 	}
 
-	if ((!intel_dp->psr.psr2_sel_fetch_enabled || DISPLAY_VER(display) >= 20) &&
-	    !intel_dp->psr.busy_frontbuffer_bits)
+	if (!intel_dp->psr.active && !intel_dp->psr.busy_frontbuffer_bits)
 		queue_work(display->wq.unordered, &intel_dp->psr.work);
 }
 

drivers/gpu/drm/i915/gem/i915_gem_object_frontbuffer.h

@@ -89,12 +89,10 @@ i915_gem_object_set_frontbuffer(struct drm_i915_gem_object *obj,
 
 	if (!front) {
 		RCU_INIT_POINTER(obj->frontbuffer, NULL);
-		drm_gem_object_put(intel_bo_to_drm_bo(obj));
 	} else if (rcu_access_pointer(obj->frontbuffer)) {
 		cur = rcu_dereference_protected(obj->frontbuffer, true);
 		kref_get(&cur->ref);
 	} else {
-		drm_gem_object_get(intel_bo_to_drm_bo(obj));
 		rcu_assign_pointer(obj->frontbuffer, front);
 	}
 

drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c

@@ -1325,9 +1325,16 @@ static int ct_receive(struct intel_guc_ct *ct)
 
 static void ct_try_receive_message(struct intel_guc_ct *ct)
 {
+	struct intel_guc *guc = ct_to_guc(ct);
 	int ret;
 
-	if (GEM_WARN_ON(!ct->enabled))
+	if (!ct->enabled) {
+		GEM_WARN_ON(!guc_to_gt(guc)->uc.reset_in_progress);
+		return;
+	}
+
+	/* When interrupt disabled, message handling is not expected */
+	if (!guc->interrupts.enabled)
 		return;
 
 	ret = ct_receive(ct);