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Sat, 18 Mar 2023 10:04:40 +0000 Date: Sat, 18 Mar 2023 18:03:59 +0800 From: kernel test robot To: Arnd Bergmann Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org Subject: arch/arm/mach-omap1/serial.c:236:12: warning: no previous prototype for 'omap_serial_wakeup_init' Message-ID: <202303181820.fFVSpwKt-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Arnd, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 478a351ce0d69cef2d2bf2a686a09b356b63a66c commit: 250c1a694ff304e5d69e74ab32755eddcc2b8f65 ARM: pxa: convert to multiplatform date: 11 months ago config: arm-randconfig-r033-20230318 (https://download.01.org/0day-ci/archive/20230318/202303181820.fFVSpwKt-lkp@intel.com/config) compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=250c1a694ff304e5d69e74ab32755eddcc2b8f65 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 250c1a694ff304e5d69e74ab32755eddcc2b8f65 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/mach-omap1/ drivers/usb/gadget/udc/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202303181820.fFVSpwKt-lkp@intel.com/ All warnings (new ones prefixed by >>): >> arch/arm/mach-omap1/serial.c:236:12: warning: no previous prototype for 'omap_serial_wakeup_init' [-Wmissing-prototypes] 236 | int __init omap_serial_wakeup_init(void) | ^~~~~~~~~~~~~~~~~~~~~~~ -- drivers/usb/gadget/udc/omap_udc.c: In function 'omap_udc_pio_irq': >> drivers/usb/gadget/udc/omap_udc.c:1915:37: warning: variable 'stat' set but not used [-Wunused-but-set-variable] 1915 | int stat; | ^~~~ drivers/usb/gadget/udc/omap_udc.c: At top level: drivers/usb/gadget/udc/omap_udc.c:110:19: warning: 'driver_desc' defined but not used [-Wunused-const-variable=] 110 | static const char driver_desc[] = DRIVER_DESC; | ^~~~~~~~~~~ vim +/omap_serial_wakeup_init +236 arch/arm/mach-omap1/serial.c 7c38cf021b42a4 Tony Lindgren 2005-09-08 235 82c3bd03535f15 Shawn Guo 2012-04-26 @236 int __init omap_serial_wakeup_init(void) 7c38cf021b42a4 Tony Lindgren 2005-09-08 237 { 7c38cf021b42a4 Tony Lindgren 2005-09-08 238 if (!cpu_is_omap16xx()) 7c38cf021b42a4 Tony Lindgren 2005-09-08 239 return 0; 7c38cf021b42a4 Tony Lindgren 2005-09-08 240 7c38cf021b42a4 Tony Lindgren 2005-09-08 241 if (uart1_ck != NULL) 7c38cf021b42a4 Tony Lindgren 2005-09-08 242 omap_serial_set_port_wakeup(37); 7c38cf021b42a4 Tony Lindgren 2005-09-08 243 if (uart2_ck != NULL) 7c38cf021b42a4 Tony Lindgren 2005-09-08 244 omap_serial_set_port_wakeup(18); 7c38cf021b42a4 Tony Lindgren 2005-09-08 245 if (uart3_ck != NULL) 7c38cf021b42a4 Tony Lindgren 2005-09-08 246 omap_serial_set_port_wakeup(49); 7c38cf021b42a4 Tony Lindgren 2005-09-08 247 7c38cf021b42a4 Tony Lindgren 2005-09-08 248 return 0; 7c38cf021b42a4 Tony Lindgren 2005-09-08 249 } 7c38cf021b42a4 Tony Lindgren 2005-09-08 250 :::::: The code at line 236 was first introduced by commit :::::: 82c3bd03535f1571426fdd19b7d832f76b7ac85e ARM: omap1: use machine specific hook for late init :::::: TO: Shawn Guo :::::: CC: Shawn Guo -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests