linux-kernel - Re: [PATCH v3] drm/tilcdc: Fix removal actions in case of failed probe

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Message-ID: <202511191045.bW4DdgHX-lkp@intel.com>
Date: Wed, 19 Nov 2025 11:14:11 +0800
From: kernel test robot <lkp@...el.com>
To: Kory Maincent <kory.maincent@...tlin.com>,
	Maxime Ripard <mripard@...nel.org>,
	Douglas Anderson <dianders@...omium.org>,
	Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, Bajjuri Praneeth <praneeth@...com>,
	Luca Ceresoli <luca.ceresoli@...tlin.com>,
	Louis Chauvet <louis.chauvet@...tlin.com>,
	"Kory Maincent (TI.com)" <kory.maincent@...tlin.com>,
	stable@...r.kernel.org, thomas.petazzoni@...tlin.com,
	Jyri Sarha <jyri.sarha@...ux.intel.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Subject: Re: [PATCH v3] drm/tilcdc: Fix removal actions in case of failed
 probe

Hi Kory,

kernel test robot noticed the following build warnings:

[auto build test WARNING on linus/master]
[also build test WARNING on v6.18-rc6 next-20251118]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Kory-Maincent/drm-tilcdc-Fix-removal-actions-in-case-of-failed-probe/20251118-214022
base:   linus/master
patch link:    https://lore.kernel.org/r/20251118133850.125561-1-kory.maincent%40bootlin.com
patch subject: [PATCH v3] drm/tilcdc: Fix removal actions in case of failed probe
config: arm-randconfig-004-20251119 (https://download.01.org/0day-ci/archive/20251119/202511191045.bW4DdgHX-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 13.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251119/202511191045.bW4DdgHX-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511191045.bW4DdgHX-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/tilcdc/tilcdc_drv.c: In function 'tilcdc_init':
>> drivers/gpu/drm/tilcdc/tilcdc_drv.c:391:1: warning: label 'destroy_crtc' defined but not used [-Wunused-label]
     391 | destroy_crtc:
         | ^~~~~~~~~~~~


vim +/destroy_crtc +391 drivers/gpu/drm/tilcdc/tilcdc_drv.c

   329	
   330		if (priv->is_componentized) {
   331			ret = component_bind_all(dev, ddev);
   332			if (ret < 0)
   333				goto unregister_cpufreq_notif;
   334	
   335			ret = tilcdc_add_component_encoder(ddev);
   336			if (ret < 0)
   337				goto unbind_component;
   338		} else {
   339			ret = tilcdc_attach_external_device(ddev);
   340			if (ret)
   341				goto unregister_cpufreq_notif;
   342		}
   343	
   344		if (!priv->external_connector &&
   345		    ((priv->num_encoders == 0) || (priv->num_connectors == 0))) {
   346			dev_err(dev, "no encoders/connectors found\n");
   347			ret = -EPROBE_DEFER;
   348			goto unbind_component;
   349		}
   350	
   351		ret = drm_vblank_init(ddev, 1);
   352		if (ret < 0) {
   353			dev_err(dev, "failed to initialize vblank\n");
   354			goto unbind_component;
   355		}
   356	
   357		ret = platform_get_irq(pdev, 0);
   358		if (ret < 0)
   359			goto unbind_component;
   360		priv->irq = ret;
   361	
   362		ret = tilcdc_irq_install(ddev, priv->irq);
   363		if (ret < 0) {
   364			dev_err(dev, "failed to install IRQ handler\n");
   365			goto unbind_component;
   366		}
   367	
   368		drm_mode_config_reset(ddev);
   369	
   370		drm_kms_helper_poll_init(ddev);
   371	
   372		ret = drm_dev_register(ddev, 0);
   373		if (ret)
   374			goto stop_poll;
   375	
   376		drm_client_setup_with_color_mode(ddev, bpp);
   377	
   378		return 0;
   379	
   380	stop_poll:
   381		drm_kms_helper_poll_fini(ddev);
   382		tilcdc_irq_uninstall(ddev);
   383	unbind_component:
   384		if (priv->is_componentized)
   385			component_unbind_all(dev, ddev);
   386	unregister_cpufreq_notif:
   387	#ifdef CONFIG_CPU_FREQ
   388		cpufreq_unregister_notifier(&priv->freq_transition,
   389					    CPUFREQ_TRANSITION_NOTIFIER);
   390	#endif
 > 391	destroy_crtc:
   392		tilcdc_crtc_destroy(priv->crtc);
   393	disable_pm:
   394		pm_runtime_disable(dev);
   395		clk_put(priv->clk);
   396	free_wq:
   397		destroy_workqueue(priv->wq);
   398	put_drm:
   399		platform_set_drvdata(pdev, NULL);
   400		ddev->dev_private = NULL;
   401		drm_dev_put(ddev);
   402	
   403		return ret;
   404	}
   405	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki