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a="1383346" X-IronPort-AV: E=Sophos;i="6.27,174,1787036400"; d="scan'208";a="1383346" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Oct 2026 02:47:05 -0700 X-CSE-ConnectionGUID: CtmiaNT2Qe610YGnKfB18Q== X-CSE-MsgGUID: 72CUuvjpQs6P+tCXdd0VJw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,174,1787036400"; d="scan'208";a="3691885" Received: from lkp-server01.sh.intel.com (HELO 0caa9d2d175c) ([10.239.97.150]) by fmviesa003.fm.intel.com with ESMTP; 23 Oct 2026 02:47:01 -0700 Received: from kbuild by 0caa9d2d175c with local (Exim 4.98.2) (envelope-from ) id 1xKBrW-00000000SVu-2fyk; Fri, 23 Oct 2026 09:46:58 +0000 Date: Fri, 23 Oct 2026 17:46:48 +0800 From: kernel test robot To: Lars Rask , Marcus Folkesson , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, kernel@axis.com, Lars Rask Subject: Re: [PATCH 1/2] drm/sitronix/st7571-spi: Add support for ST75156 controller Message-ID: <202610231738.0gNssMIn-lkp@intel.com> References: <20261022-add_st75156_support-v1-1-582525a39a39@axis.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261022-add_st75156_support-v1-1-582525a39a39@axis.com> Hi Lars, kernel test robot noticed the following build warnings: [auto build test WARNING on 8d3ae59288f1e7d58d76558a6ee96d533bc5019f] url: https://github.com/intel-lab-lkp/linux/commits/Lars-Rask/drm-sitronix-st7571-spi-Add-support-for-ST75156-controller/20261022-173105 base: 8d3ae59288f1e7d58d76558a6ee96d533bc5019f patch link: https://lore.kernel.org/r/20261022-add_st75156_support-v1-1-582525a39a39%40axis.com patch subject: [PATCH 1/2] drm/sitronix/st7571-spi: Add support for ST75156 controller config: i386-buildonly-randconfig-1001-20261023 (https://download.01.org/0day-ci/archive/20261023/202610231738.0gNssMIn-lkp@intel.com/config) compiler: clang version 22.1.8 (https://github.com/llvm/llvm-project ca7933e47d3a3451d81e72ac174dcb5aa28b59d1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261023/202610231738.0gNssMIn-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/202610231738.0gNssMIn-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/sitronix/st7571-spi.c:121:43: warning: variable 'regmap' is uninitialized when used here [-Wuninitialized] 121 | return dev_err_probe(&spi->dev, PTR_ERR(regmap), | ^~~~~~ drivers/gpu/drm/sitronix/st7571-spi.c:116:23: note: initialize the variable 'regmap' to silence this warning 116 | struct regmap *regmap; | ^ | = NULL 1 warning generated. vim +/regmap +121 drivers/gpu/drm/sitronix/st7571-spi.c 112 113 static int st7571_spi_probe(struct spi_device *spi) 114 { 115 struct st7571_device *st7571; 116 struct regmap *regmap; 117 struct spi_device_data *spi_data; 118 119 spi_data = devm_kzalloc(&spi->dev, sizeof(*spi_data), GFP_KERNEL); 120 if (IS_ERR(spi_data)) > 121 return dev_err_probe(&spi->dev, PTR_ERR(regmap), 122 "Failed to initialize spi data\n"); 123 124 spi_data->spi = spi; 125 spi_data->dc_gpio = devm_gpiod_get(&spi->dev, "dc", GPIOD_OUT_LOW); 126 127 if (IS_ERR(spi_data->dc_gpio)) 128 /* init regmap for 3 line SPI */ 129 regmap = devm_regmap_init_spi(spi, &st7571_spi_regmap_config); 130 else 131 /* init regmap for 4 line SPI */ 132 regmap = devm_regmap_init(&spi->dev, ®map_spi_dc_bus, 133 spi_data, &st7571_spi_regmap_config); 134 135 if (IS_ERR(regmap)) 136 return dev_err_probe(&spi->dev, PTR_ERR(regmap), 137 "Failed to initialize regmap\n"); 138 139 st7571 = st7571_probe(&spi->dev, regmap); 140 if (IS_ERR(st7571)) 141 return dev_err_probe(&spi->dev, PTR_ERR(st7571), 142 "Failed to initialize regmap\n"); 143 144 st7571->spi_data = spi_data; 145 spi_set_drvdata(spi, st7571); 146 147 return 0; 148 } 149 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki