linux-kernel - Re: [PATCH V5 7/9] drm/amd/pm: add flood detection for wbrf events

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Date:   Fri, 30 Jun 2023 22:29:35 +0800
From:   kernel test robot <lkp@...el.com>
To:     Evan Quan <evan.quan@....com>, rafael@...nel.org, lenb@...nel.org,
        Alexander.Deucher@....com, Christian.Koenig@....com,
        Xinhui.Pan@....com, airlied@...il.com, daniel@...ll.ch,
        johannes@...solutions.net, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        Mario.Limonciello@....com, mdaenzer@...hat.com,
        maarten.lankhorst@...ux.intel.com, tzimmermann@...e.de,
        hdegoede@...hat.com, jingyuwang_vip@....com, Lijo.Lazar@....com,
        jim.cromie@...il.com, bellosilicio@...il.com,
        andrealmeid@...lia.com, trix@...hat.com, jsg@....id.au,
        arnd@...db.de
Cc:     oe-kbuild-all@...ts.linux.dev, netdev@...r.kernel.org,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH V5 7/9] drm/amd/pm: add flood detection for wbrf events

Hi Evan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on wireless-next/main]
[also build test WARNING on wireless/main v6.4]
[cannot apply to drm-misc/drm-misc-next linus/master next-20230630]
[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/Evan-Quan/drivers-core-Add-support-for-Wifi-band-RF-mitigations/20230630-183633
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next.git main
patch link:    https://lore.kernel.org/r/20230630103240.1557100-8-evan.quan%40amd.com
patch subject: [PATCH V5 7/9] drm/amd/pm: add flood detection for wbrf events
config: x86_64-buildonly-randconfig-r003-20230630 (https://download.01.org/0day-ci/archive/20230630/202306302258.ZdzWnrmF-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce: (https://download.01.org/0day-ci/archive/20230630/202306302258.ZdzWnrmF-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/202306302258.ZdzWnrmF-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c: In function 'smu_wbrf_init':
>> drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:1336:31: warning: unused variable 'adev' [-Wunused-variable]
    1336 |         struct amdgpu_device *adev = smu->adev;
         |                               ^~~~


vim +/adev +1336 drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c

19fbe240b2627a Evan Quan 2023-06-30  1324  
19fbe240b2627a Evan Quan 2023-06-30  1325  /**
19fbe240b2627a Evan Quan 2023-06-30  1326   * smu_wbrf_init - init driver wbrf support
19fbe240b2627a Evan Quan 2023-06-30  1327   *
19fbe240b2627a Evan Quan 2023-06-30  1328   * @smu: smu_context pointer
19fbe240b2627a Evan Quan 2023-06-30  1329   *
19fbe240b2627a Evan Quan 2023-06-30  1330   * Verifies the AMD ACPI interfaces and registers with the wbrf
19fbe240b2627a Evan Quan 2023-06-30  1331   * notifier chain if wbrf feature is supported.
19fbe240b2627a Evan Quan 2023-06-30  1332   * Returns 0 on success, error on failure.
19fbe240b2627a Evan Quan 2023-06-30  1333   */
19fbe240b2627a Evan Quan 2023-06-30  1334  static int smu_wbrf_init(struct smu_context *smu)
19fbe240b2627a Evan Quan 2023-06-30  1335  {
19fbe240b2627a Evan Quan 2023-06-30 @1336  	struct amdgpu_device *adev = smu->adev;
19fbe240b2627a Evan Quan 2023-06-30  1337  	int ret;
19fbe240b2627a Evan Quan 2023-06-30  1338  
19fbe240b2627a Evan Quan 2023-06-30  1339  	if (!smu->wbrf_supported)
19fbe240b2627a Evan Quan 2023-06-30  1340  		return 0;
19fbe240b2627a Evan Quan 2023-06-30  1341  
0b8224d2686865 Evan Quan 2023-06-30  1342  	INIT_DELAYED_WORK(&smu->wbrf_delayed_work,
0b8224d2686865 Evan Quan 2023-06-30  1343  			  smu_wbrf_delayed_work_handler);
0b8224d2686865 Evan Quan 2023-06-30  1344  
19fbe240b2627a Evan Quan 2023-06-30  1345  	smu->wbrf_notifier.notifier_call = smu_wbrf_event_handler;
19fbe240b2627a Evan Quan 2023-06-30  1346  	ret = wbrf_register_notifier(&smu->wbrf_notifier);
19fbe240b2627a Evan Quan 2023-06-30  1347  	if (ret)
19fbe240b2627a Evan Quan 2023-06-30  1348  		return ret;
19fbe240b2627a Evan Quan 2023-06-30  1349  
19fbe240b2627a Evan Quan 2023-06-30  1350  	/*
19fbe240b2627a Evan Quan 2023-06-30  1351  	 * Some wifiband exclusion ranges may be already there
19fbe240b2627a Evan Quan 2023-06-30  1352  	 * before our driver loaded. To make sure our driver
19fbe240b2627a Evan Quan 2023-06-30  1353  	 * is awared of those exclusion ranges.
19fbe240b2627a Evan Quan 2023-06-30  1354  	 */
0b8224d2686865 Evan Quan 2023-06-30  1355  	schedule_delayed_work(&smu->wbrf_delayed_work,
0b8224d2686865 Evan Quan 2023-06-30  1356  			      msecs_to_jiffies(SMU_WBRF_EVENT_HANDLING_PACE));
19fbe240b2627a Evan Quan 2023-06-30  1357  
0b8224d2686865 Evan Quan 2023-06-30  1358  	return 0;
19fbe240b2627a Evan Quan 2023-06-30  1359  }
19fbe240b2627a Evan Quan 2023-06-30  1360  

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