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Thu, 23 Oct 2025 00:31:11 -0700 (PDT) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-475c428dafesm80214005e9.6.2025.10.23.00.31.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Oct 2025 00:31:11 -0700 (PDT) Date: Thu, 23 Oct 2025 10:31:07 +0300 From: Dan Carpenter To: oe-kbuild@lists.linux.dev, Ariana Lazar , Jonathan Cameron , David Lechner , Nuno =?iso-8859-1?Q?S=E1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Ariana Lazar Subject: Re: [PATCH 2/2] iio: adc: adding support for PAC1711 Message-ID: <202510230847.CEW0lvJl-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251015-pac1711-v1-2-976949e36367@microchip.com> Hi Ariana, kernel test robot noticed the following build warnings: url: https://github.com/intel-lab-lkp/linux/commits/Ariana-Lazar/dt-bindings-iio-adc-adding-support-for-PAC1711/20251016-002337 base: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494 patch link: https://lore.kernel.org/r/20251015-pac1711-v1-2-976949e36367%40microchip.com patch subject: [PATCH 2/2] iio: adc: adding support for PAC1711 config: loongarch-randconfig-r072-20251019 (https://download.01.org/0day-ci/archive/20251023/202510230847.CEW0lvJl-lkp@intel.com/config) compiler: loongarch64-linux-gcc (GCC) 15.1.0 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 | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202510230847.CEW0lvJl-lkp@intel.com/ New smatch warnings: drivers/iio/adc/pac1711.c:473 pac1711_retrieve_data() error: uninitialized symbol 'ret'. drivers/iio/adc/pac1711.c:924 pac1711_read_raw() error: uninitialized symbol 'tmp'. drivers/iio/adc/pac1711.c:1124 pac1711_of_parse_channel_config() error: uninitialized symbol 'ret'. Old smatch warnings: drivers/iio/adc/pac1711.c:1079 pac1711_setup_vbus_range() warn: unsigned 'ret' is never less than zero. drivers/iio/adc/pac1711.c:1079 pac1711_setup_vbus_range() warn: error code type promoted to positive: 'ret' drivers/iio/adc/pac1711.c:1102 pac1711_setup_vsense_range() warn: unsigned 'ret' is never less than zero. drivers/iio/adc/pac1711.c:1102 pac1711_setup_vsense_range() warn: error code type promoted to positive: 'ret' drivers/iio/adc/pac1711.c:1377 pac1711_probe() warn: passing positive error code '1' to 'dev_err_probe' vim +/ret +473 drivers/iio/adc/pac1711.c de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 450 static int pac1711_retrieve_data(struct pac1711_chip_info *info, de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 451 u32 wait_time) de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 452 { de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 453 int ret; de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 454 de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 455 /* de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 456 * check if the minimal elapsed time has passed and if so, de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 457 * re-read the chip, otherwise the cached info is just fine de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 458 */ de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 459 if (time_after(jiffies, info->chip_reg_data.jiffies_tstamp + de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 460 msecs_to_jiffies(PAC1711_MIN_POLLING_TIME_MS))) { de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 461 ret = pac1711_reg_snapshot(info, true, PAC1711_REFRESH_REG_ADDR, de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 462 wait_time); de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 463 de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 464 /* de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 465 * Re-schedule the work for the read registers timeout de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 466 * (to prevent chip regs saturation) de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 467 */ de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 468 cancel_delayed_work_sync(&info->work_chip_rfsh); de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 469 schedule_delayed_work(&info->work_chip_rfsh, de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 470 msecs_to_jiffies(PAC1711_MAX_RFSH_LIMIT_MS)); de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 471 } ret isn't initialized on the else path. de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 472 de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 @473 return ret; de2a3cdfd6e76b2 Ariana Lazar 2025-10-15 474 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki