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Mon, 18 Aug 2025 23:14:51 -0700 (PDT) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-3c0754f3b7esm2146290f8f.30.2025.08.18.23.14.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Aug 2025 23:14:51 -0700 (PDT) Date: Tue, 19 Aug 2025 09:14:48 +0300 From: Dan Carpenter To: oe-kbuild@lists.linux.dev, Andreas Kemnade , Matti Vaittinen , Matti Vaittinen , Lee Jones , Sebastian Reichel Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Andreas Kemnade Subject: Re: [PATCH 2/2] power: supply: Add bd718(15/28/78) charger driver Message-ID: <202508191303.UzPStkjj-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-pm@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: <20250816-bd71828-charger-v1-2-71b11bde5c73@kemnade.info> Hi Andreas, kernel test robot noticed the following build warnings: url: https://github.com/intel-lab-lkp/linux/commits/Andreas-Kemnade/mfd-bd71828-bd71815-prepare-for-power-supply-support/20250817-032146 base: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 patch link: https://lore.kernel.org/r/20250816-bd71828-charger-v1-2-71b11bde5c73%40kemnade.info patch subject: [PATCH 2/2] power: supply: Add bd718(15/28/78) charger driver config: loongarch-randconfig-r073-20250818 (https://download.01.org/0day-ci/archive/20250819/202508191303.UzPStkjj-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/202508191303.UzPStkjj-lkp@intel.com/ smatch warnings: drivers/power/supply/bd71828-power.c:298 bd71828_get_temp() error: uninitialized symbol 't'. drivers/power/supply/bd71828-power.c:559 bd71828_battery_get_property() error: uninitialized symbol 'tmp'. vim +/t +298 drivers/power/supply/bd71828-power.c c57d31029550a0 Andreas Kemnade 2025-08-16 286 static int bd71828_get_temp(struct bd71828_power *pwr, int *temp) c57d31029550a0 Andreas Kemnade 2025-08-16 287 { c57d31029550a0 Andreas Kemnade 2025-08-16 288 uint16_t t; c57d31029550a0 Andreas Kemnade 2025-08-16 289 int ret; c57d31029550a0 Andreas Kemnade 2025-08-16 290 int tmp = 200 * 10000; c57d31029550a0 Andreas Kemnade 2025-08-16 291 c57d31029550a0 Andreas Kemnade 2025-08-16 292 ret = bd7182x_read16_himask(pwr, pwr->regs->btemp_vth, c57d31029550a0 Andreas Kemnade 2025-08-16 293 BD71828_MASK_VM_BTMP_U, &t); c57d31029550a0 Andreas Kemnade 2025-08-16 294 if (ret || t > 3200) c57d31029550a0 Andreas Kemnade 2025-08-16 295 dev_err(pwr->dev, c57d31029550a0 Andreas Kemnade 2025-08-16 296 "Failed to read system min average voltage\n"); We should return the error here. c57d31029550a0 Andreas Kemnade 2025-08-16 297 c57d31029550a0 Andreas Kemnade 2025-08-16 @298 tmp -= 625ULL * (unsigned int)t; If bd7182x_read16_himask() fails then t is uninitialized or invalid. c57d31029550a0 Andreas Kemnade 2025-08-16 299 *temp = tmp / 1000; c57d31029550a0 Andreas Kemnade 2025-08-16 300 c57d31029550a0 Andreas Kemnade 2025-08-16 301 return ret; c57d31029550a0 Andreas Kemnade 2025-08-16 302 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki