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d="scan'208";a="325377961" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Jan 2023 08:33:01 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10595"; a="784119243" X-IronPort-AV: E=Sophos;i="5.97,229,1669104000"; d="scan'208";a="784119243" Received: from lkp-server01.sh.intel.com (HELO 5646d64e7320) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 19 Jan 2023 08:33:00 -0800 Received: from kbuild by 5646d64e7320 with local (Exim 4.96) (envelope-from ) id 1pIXqV-0001dC-17; Thu, 19 Jan 2023 16:32:59 +0000 Date: Fri, 20 Jan 2023 00:32:00 +0800 From: kernel test robot To: Richard Acayan Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, dri-devel@lists.freedesktop.org, Neil Armstrong , Sam Ravnborg Subject: [drm-misc:drm-misc-next 3/7] drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:249:6: warning: variable 'ret' is uninitialized when used here Message-ID: <202301200041.hwrKmLMy-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next head: 43bde505d66a41c2ad706d603e97b2c8aa2fbe4a commit: 9402cde9347eca050e14ea9e47270e84a6899162 [3/7] drm/panel: vtdr6130: Use 16-bit brightness function config: mips-randconfig-r031-20230119 (https://download.01.org/0day-ci/archive/20230120/202301200041.hwrKmLMy-lkp@intel.com/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 4196ca3278f78c6e19246e54ab0ecb364e37d66a) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu git remote add drm-misc git://anongit.freedesktop.org/drm/drm-misc git fetch --no-tags drm-misc drm-misc-next git checkout 9402cde9347eca050e14ea9e47270e84a6899162 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/gpu/drm/panel/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:249:6: warning: variable 'ret' is uninitialized when used here [-Wuninitialized] if (ret < 0) ^~~ drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:246:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 1 warning generated. vim +/ret +249 drivers/gpu/drm/panel/panel-visionox-vtdr6130.c 2349183d32d83a7 Neil Armstrong 2023-01-09 241 2349183d32d83a7 Neil Armstrong 2023-01-09 242 static int visionox_vtdr6130_bl_update_status(struct backlight_device *bl) 2349183d32d83a7 Neil Armstrong 2023-01-09 243 { 2349183d32d83a7 Neil Armstrong 2023-01-09 244 struct mipi_dsi_device *dsi = bl_get_data(bl); 2349183d32d83a7 Neil Armstrong 2023-01-09 245 u16 brightness = backlight_get_brightness(bl); 2349183d32d83a7 Neil Armstrong 2023-01-09 246 int ret; 2349183d32d83a7 Neil Armstrong 2023-01-09 247 9402cde9347eca0 Richard Acayan 2023-01-16 248 mipi_dsi_dcs_set_display_brightness_large(dsi, brightness); 2349183d32d83a7 Neil Armstrong 2023-01-09 @249 if (ret < 0) 2349183d32d83a7 Neil Armstrong 2023-01-09 250 return ret; 2349183d32d83a7 Neil Armstrong 2023-01-09 251 2349183d32d83a7 Neil Armstrong 2023-01-09 252 return 0; 2349183d32d83a7 Neil Armstrong 2023-01-09 253 } 2349183d32d83a7 Neil Armstrong 2023-01-09 254 :::::: The code at line 249 was first introduced by commit :::::: 2349183d32d83a7635baa804934813bcad13fd62 drm/panel: add visionox vtdr6130 DSI panel driver :::::: TO: Neil Armstrong :::::: CC: Neil Armstrong -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 20C2CC004D4 for ; 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d="scan'208";a="325377964" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Jan 2023 08:33:02 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10595"; a="784119243" X-IronPort-AV: E=Sophos;i="5.97,229,1669104000"; d="scan'208";a="784119243" Received: from lkp-server01.sh.intel.com (HELO 5646d64e7320) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 19 Jan 2023 08:33:00 -0800 Received: from kbuild by 5646d64e7320 with local (Exim 4.96) (envelope-from ) id 1pIXqV-0001dC-17; Thu, 19 Jan 2023 16:32:59 +0000 Date: Fri, 20 Jan 2023 00:32:00 +0800 From: kernel test robot To: Richard Acayan Subject: [drm-misc:drm-misc-next 3/7] drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:249:6: warning: variable 'ret' is uninitialized when used here Message-ID: <202301200041.hwrKmLMy-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Neil Armstrong , llvm@lists.linux.dev, Sam Ravnborg , dri-devel@lists.freedesktop.org, oe-kbuild-all@lists.linux.dev Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" tree: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next head: 43bde505d66a41c2ad706d603e97b2c8aa2fbe4a commit: 9402cde9347eca050e14ea9e47270e84a6899162 [3/7] drm/panel: vtdr6130: Use 16-bit brightness function config: mips-randconfig-r031-20230119 (https://download.01.org/0day-ci/archive/20230120/202301200041.hwrKmLMy-lkp@intel.com/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 4196ca3278f78c6e19246e54ab0ecb364e37d66a) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu git remote add drm-misc git://anongit.freedesktop.org/drm/drm-misc git fetch --no-tags drm-misc drm-misc-next git checkout 9402cde9347eca050e14ea9e47270e84a6899162 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/gpu/drm/panel/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:249:6: warning: variable 'ret' is uninitialized when used here [-Wuninitialized] if (ret < 0) ^~~ drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:246:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 1 warning generated. vim +/ret +249 drivers/gpu/drm/panel/panel-visionox-vtdr6130.c 2349183d32d83a7 Neil Armstrong 2023-01-09 241 2349183d32d83a7 Neil Armstrong 2023-01-09 242 static int visionox_vtdr6130_bl_update_status(struct backlight_device *bl) 2349183d32d83a7 Neil Armstrong 2023-01-09 243 { 2349183d32d83a7 Neil Armstrong 2023-01-09 244 struct mipi_dsi_device *dsi = bl_get_data(bl); 2349183d32d83a7 Neil Armstrong 2023-01-09 245 u16 brightness = backlight_get_brightness(bl); 2349183d32d83a7 Neil Armstrong 2023-01-09 246 int ret; 2349183d32d83a7 Neil Armstrong 2023-01-09 247 9402cde9347eca0 Richard Acayan 2023-01-16 248 mipi_dsi_dcs_set_display_brightness_large(dsi, brightness); 2349183d32d83a7 Neil Armstrong 2023-01-09 @249 if (ret < 0) 2349183d32d83a7 Neil Armstrong 2023-01-09 250 return ret; 2349183d32d83a7 Neil Armstrong 2023-01-09 251 2349183d32d83a7 Neil Armstrong 2023-01-09 252 return 0; 2349183d32d83a7 Neil Armstrong 2023-01-09 253 } 2349183d32d83a7 Neil Armstrong 2023-01-09 254 :::::: The code at line 249 was first introduced by commit :::::: 2349183d32d83a7635baa804934813bcad13fd62 drm/panel: add visionox vtdr6130 DSI panel driver :::::: TO: Neil Armstrong :::::: CC: Neil Armstrong -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests