Messages in this thread | | | Date | Wed, 21 Sep 2022 23:26:24 +0800 | From | kernel test robot <> | Subject | [jcmvbkbc-xtensa:xtensa-6.0-esp32 7/12] drivers/tty/serial/esp32_uart.c:33:6: warning: no previous prototype for function 'dbg_echo' |
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tree: https://github.com/jcmvbkbc/linux-xtensa xtensa-6.0-esp32 head: 513fb5af258c5311c5e0684c21db9aeb48e981e8 commit: a17e7b31fc865c922149feb5c560bc4c497b8c34 [7/12] WIP: drivers/tty/serial: add driver for ESP32 UART config: riscv-randconfig-r032-20220921 (https://download.01.org/0day-ci/archive/20220921/202209212350.zedDtGpw-lkp@intel.com/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/jcmvbkbc/linux-xtensa/commit/a17e7b31fc865c922149feb5c560bc4c497b8c34 git remote add jcmvbkbc-xtensa https://github.com/jcmvbkbc/linux-xtensa git fetch --no-tags jcmvbkbc-xtensa xtensa-6.0-esp32 git checkout a17e7b31fc865c922149feb5c560bc4c497b8c34 # 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=riscv SHELL=/bin/bash drivers/clk/ drivers/misc/ drivers/net/wireless/ralink/rt2x00/ drivers/pinctrl/ drivers/tty/serial/
If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/tty/serial/esp32_uart.c:33:6: warning: no previous prototype for function 'dbg_echo' [-Wmissing-prototypes] void dbg_echo(const char *s) ^ drivers/tty/serial/esp32_uart.c:33:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void dbg_echo(const char *s) ^ static >> drivers/tty/serial/esp32_uart.c:48:6: warning: no previous prototype for function 'dbg_printf' [-Wmissing-prototypes] void dbg_printf(const char *fmt, ...) ^ drivers/tty/serial/esp32_uart.c:48:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void dbg_printf(const char *fmt, ...) ^ static 2 warnings generated.
vim +/dbg_echo +33 drivers/tty/serial/esp32_uart.c
32 > 33 void dbg_echo(const char *s) 34 { 35 volatile void __iomem *base = (volatile void __iomem *)0x3ff40000; 36 37 while ((readl(base + UART_STATUS_REG) & UART_TXFIFO_CNT_MASK) != 0) 38 ; 39 40 while (*s) { 41 if (*s == '\n') 42 writel('\r', base + UART_FIFO_REG); 43 writel(*s, base + UART_FIFO_REG); 44 ++s; 45 } 46 } 47 > 48 void dbg_printf(const char *fmt, ...) 49 { 50 va_list ap; 51 char buf[256]; 52 53 va_start(ap, fmt); 54 vsnprintf(buf, sizeof(buf), fmt, ap); 55 va_end(ap); 56 dbg_echo(buf); 57 } 58
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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