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X-CSE-ConnectionGUID: RtzCWjH3SIGC2rKc8eN8Yw== X-CSE-MsgGUID: qfffm11BQV2jbdSO2HJ8ZQ== X-IronPort-AV: E=McAfee;i="6800,10657,11504"; a="55721665" X-IronPort-AV: E=Sophos;i="6.16,339,1744095600"; d="scan'208";a="55721665" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jul 2025 14:50:34 -0700 X-CSE-ConnectionGUID: YUbCUJRlSDSYtBKh9alZxQ== X-CSE-MsgGUID: msO8MjvYQuO0CppyXIzicw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,339,1744095600"; d="scan'208";a="192644434" Received: from lkp-server01.sh.intel.com (HELO 9ee84586c615) ([10.239.97.150]) by fmviesa001.fm.intel.com with ESMTP; 26 Jul 2025 14:50:29 -0700 Received: from kbuild by 9ee84586c615 with local (Exim 4.96) (envelope-from ) id 1ufmmg-000MJH-2B; Sat, 26 Jul 2025 21:50:26 +0000 Date: Sun, 27 Jul 2025 05:50:14 +0800 From: kernel test robot To: Maud Spierings via B4 Relay , Lee Jones , Daniel Thompson , Jingoo Han , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Helge Deller , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Maud Spierings , MaudSpieringsmaudspierings@gocontroll.com Subject: Re: [PATCH 2/4] backlight: add max25014atg backlight Message-ID: <202507270543.G0TT6f25-lkp@intel.com> References: <20250725-max25014-v1-2-0e8cce92078e@gocontroll.com> Precedence: bulk X-Mailing-List: linux-leds@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: <20250725-max25014-v1-2-0e8cce92078e@gocontroll.com> Hi Maud, kernel test robot noticed the following build warnings: [auto build test WARNING on d7af19298454ed155f5cf67201a70f5cf836c842] url: https://github.com/intel-lab-lkp/linux/commits/Maud-Spierings-via-B4-Relay/dt-bindings-backlight-Add-max25014-bindings/20250725-191221 base: d7af19298454ed155f5cf67201a70f5cf836c842 patch link: https://lore.kernel.org/r/20250725-max25014-v1-2-0e8cce92078e%40gocontroll.com patch subject: [PATCH 2/4] backlight: add max25014atg backlight config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20250727/202507270543.G0TT6f25-lkp@intel.com/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250727/202507270543.G0TT6f25-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202507270543.G0TT6f25-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/video/backlight/max25014.c:86:4: warning: variable 'res' is uninitialized when used here [-Wuninitialized] 86 | res |= 1 << i; | ^~~ drivers/video/backlight/max25014.c:82:13: note: initialize the variable 'res' to silence this warning 82 | uint8_t res, i; | ^ | = '\0' 1 warning generated. vim +/res +86 drivers/video/backlight/max25014.c 73 74 /** 75 * @brief get the bit mask for the DISABLE register. 76 * 77 * @param strings the led string configuration array. 78 * @return uint8_t bits to set in the register. 79 */ 80 static uint8_t strings_mask(struct max25014 *maxim) 81 { 82 uint8_t res, i; 83 84 for (i = 0; i < 4; i++) { 85 if (maxim->pdata->strings[i] == 0) > 86 res |= 1 << i; 87 } 88 return res; 89 } 90 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki