tree: https://github.com/tobetter/linux odroid-5.16.y head: 04f296b5f991198f16f76ba15a23e9e00e30aac4 commit: 2c677a9186d050d7da424a02db0ab29d4796bb7d [47/75] ODROID-COMMON: power:reset: Add odroid support config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20211209/202112091542.MRWwHDRg-lk...) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 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/2c677a9186d050d7da424a02db0ab29d... git remote add tobetter https://github.com/tobetter/linux git fetch --no-tags tobetter odroid-5.16.y git checkout 2c677a9186d050d7da424a02db0ab29d4796bb7d # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/power/reset/odroid-reboot.c:63:6: warning: no previous prototype for 'odroid_card_reset' [-Wmissing-prototypes] 63 | void odroid_card_reset(void) | ^~~~~~~~~~~~~~~~~ drivers/power/reset/odroid-reboot.c: In function 'odroid_restart_probe': 141 | arm_pm_restart = do_odroid_restart; | ^~~~~~~~~~~~~~ | alarm_restart drivers/power/reset/odroid-reboot.c:141:17: note: each undeclared identifier is reported only once for each function it appears in vim +141 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 } 117 118 static void do_odroid_restart(enum reboot_mode reboot_mode, const char *cmd) 119 { 120 odroid_card_reset(); 121 __invoke_psci_fn_smc(psci_function_id_restart, 122 0, 0, 0); 123 } 124 125 static void do_odroid_poweroff(void) 126 { 127 odroid_card_reset(); 128 129 __invoke_psci_fn_smc(0x82000042, 1, 0, 0); 130 __invoke_psci_fn_smc(psci_function_id_poweroff, 131 0, 0, 0); 132 } 133 134 static int odroid_restart_probe(struct platform_device *pdev) 135 { 136 struct device_node *of_node; 137 u32 id; 138 139 if (!of_property_read_u32(pdev->dev.of_node, "sys_reset", &id)) { 140 psci_function_id_restart = id; 142 } 143 144 if (!of_property_read_u32(pdev->dev.of_node, "sys_poweroff", &id)) { 145 psci_function_id_poweroff = id; 146 pm_power_off = do_odroid_poweroff; 147 } 148 149 of_node = pdev->dev.of_node; 150 151 sd_vqsw = of_get_named_gpio(of_node, "sd-vqsw", 0); 152 if (!gpio_is_valid(sd_vqsw)) sd_vqsw = 0; 153 154 sd_vmmc = of_get_named_gpio(of_node, "sd-vmmc", 0); 155 if (!gpio_is_valid(sd_vmmc)) sd_vmmc = 0; 156 157 sd_vqen = of_get_named_gpio(of_node, "sd-vqen", 0); 158 if (!gpio_is_valid(sd_vqen)) sd_vqen = 0; 159 160 return 0; 161 } 162 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org