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Wed, 9 Sep 2026 07:45:02 +0000 Date: Wed, 9 Sep 2026 15:44:55 +0800 From: Philip Li To: Ard Biesheuvel CC: kernel test robot , Subject: Re: drivers/firmware/efi/libstub/vsprintf.c:511:5: warning: no previous prototype for function 'efi_snprintf' Message-ID: References: <202609090804.938npPl7-lkp@intel.com> <7b9400d4-ebf4-4757-81ce-9e52295cecf4@app.fastmail.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <7b9400d4-ebf4-4757-81ce-9e52295cecf4@app.fastmail.com> X-ClientProxiedBy: TPYP295CA0039.TWNP295.PROD.OUTLOOK.COM (2603:1096:7d0:7::10) To PH3PPF4E874A00C.namprd11.prod.outlook.com (2603:10b6:518:1::d1e) Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH3PPF4E874A00C:EE_|PH0PR11MB5175:EE_ X-MS-Office365-Filtering-Correlation-Id: b1c2924c-7252-4e00-91d1-08df0e4641e0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|23010399003|1800799024|10067099003|4143699003|56012099006|11063799006|18002099003|22082099003; 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Sorry for the spam, I will configure the bot to avoid sending such report. > > Thanks. > > > On Wed, 9 Sep 2026, at 09:00, kernel test robot wrote: > > tree: > > https://github.com/intel-lab-lkp/linux/commits/Ard-Biesheuvel/x86-boot-Drop-pointless-re-implementation-of-panic/20260906-150819 > > head: c551ec0edb0b057c415d5530905c288523a9bde8 > > commit: c551ec0edb0b057c415d5530905c288523a9bde8 efi/libstub: Add > > efi_snprintf() to construct wide strings > > date: 3 days ago > > config: loongarch-allyesconfig > > (https://download.01.org/0day-ci/archive/20260909/202609090804.938npPl7-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/20260909/202609090804.938npPl7-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/202609090804.938npPl7-lkp@intel.com/ > > > > All warnings (new ones prefixed by >>): > > > > drivers/firmware/efi/libstub/vsprintf.c:274:5: warning: no previous > > prototype for function 'efi_vsnprintf' [-Wmissing-prototypes] > > 274 | int efi_vsnprintf(efi_char16_t *buf, size_t size, const char > > *fmt, va_list ap, > > | ^ > > drivers/firmware/efi/libstub/vsprintf.c:274:1: note: declare > > 'static' if the function is not intended to be used outside of this > > translation unit > > 274 | int efi_vsnprintf(efi_char16_t *buf, size_t size, const char > > *fmt, va_list ap, > > | ^ > > | static > >>> drivers/firmware/efi/libstub/vsprintf.c:511:5: warning: no previous prototype for function 'efi_snprintf' [-Wmissing-prototypes] > > 511 | int efi_snprintf(efi_char16_t *buf, size_t size, const char > > *fmt, ...) > > | ^ > > drivers/firmware/efi/libstub/vsprintf.c:511:1: note: declare > > 'static' if the function is not intended to be used outside of this > > translation unit > > 511 | int efi_snprintf(efi_char16_t *buf, size_t size, const char > > *fmt, ...) > > | ^ > > | static > > 2 warnings generated. > > > > > > vim +/efi_snprintf +511 drivers/firmware/efi/libstub/vsprintf.c > > > > 510 > > > 511 int efi_snprintf(efi_char16_t *buf, size_t size, const char *fmt, ...) > > > > -- > > 0-DAY CI Kernel Test Service > > https://github.com/intel/lkp-tests/wiki >