[kbuild-all] [tobetter-linux:odroid-5.13.y 61/93] drivers/power/reset/odroid-reboot.c:63:6: warning: no previous prototype for 'odroid_card_reset'

tree: https://github.com/tobetter/linux odroid-5.13.y head: ec41beb389cd0d7ab68345d550334d44842a2cb1 commit: cec1e2aeb12d30c8811e2523a272900a1e8d7496 [61/93] ODROID-COMMON: power:reset: Add odroid support config: arm64-allyesconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 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://github.com/tobetter/linux/commit/cec1e2aeb12d30c8811e2523a272900a... git remote add tobetter-linux https://github.com/tobetter/linux git fetch --no-tags tobetter-linux odroid-5.13.y git checkout cec1e2aeb12d30c8811e2523a272900a1e8d7496 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 63 | void odroid_card_reset(void) | ^~~~~~~~~~~~~~~~~ vim +/odroid_card_reset +63 drivers/power/reset/odroid-reboot.c 62 64 { 65 int ret = 0; 66 67 if ((sd_vqsw == 0) && (sd_vmmc == 0)) 68 return; 69 70 if (sd_vqen == 0) { 71 gpio_free(sd_vqsw); 72 gpio_free(sd_vmmc); 73 ret = gpio_request_one(sd_vqsw, 74 GPIOF_OUT_INIT_LOW, "REBOOT"); 75 CHECK_RET(ret); 76 mdelay(10); 77 ret = gpio_direction_output(sd_vqsw, 1); 78 CHECK_RET(ret); 79 ret = gpio_request_one(sd_vmmc, 80 GPIOF_OUT_INIT_LOW, "REBOOT"); 81 CHECK_RET(ret); 82 mdelay(10); 83 ret = gpio_direction_output(sd_vqsw, 0); 84 CHECK_RET(ret); 85 ret = gpio_direction_output(sd_vmmc, 1); 86 CHECK_RET(ret); 87 mdelay(5); 88 gpio_free(sd_vqsw); 89 gpio_free(sd_vmmc); 90 } else { 91 gpio_free(sd_vqsw); 92 gpio_free(sd_vqen); 93 gpio_free(sd_vmmc); 94 95 ret = gpio_request_one(sd_vqsw, 96 GPIOF_OUT_INIT_LOW, "REBOOT"); 97 CHECK_RET(ret); 98 ret = gpio_request_one(sd_vqen, 99 GPIOF_OUT_INIT_LOW, "REBOOT"); 100 CHECK_RET(ret); 101 ret = gpio_request_one(sd_vmmc, 102 GPIOF_OUT_INIT_LOW, "REBOOT"); 103 CHECK_RET(ret); 104 mdelay(100); 105 ret = gpio_direction_input(sd_vqen); 106 CHECK_RET(ret); 107 ret = gpio_direction_input(sd_vmmc); 108 CHECK_RET(ret); 109 ret = gpio_direction_input(sd_vqsw); 110 CHECK_RET(ret); 111 mdelay(5); 112 gpio_free(sd_vqen); 113 gpio_free(sd_vmmc); 114 gpio_free(sd_vqsw); 115 } 116 } 117 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org