linux-kernel - drivers/power/reset/odroid-reboot.c:63:6: warning: no previous prototype for 'odroid_card

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Message-ID: <202207192004.EsFWlLBl-lkp@intel.com>
Date:   Tue, 19 Jul 2022 20:51:04 +0800
From:   kernel test robot <lkp@...el.com>
To:     ckkim <changkon12@...il.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Dongjin Kim <tobetter@...il.com>
Subject: drivers/power/reset/odroid-reboot.c:63:6: warning: no previous
 prototype for 'odroid_card_reset'

tree:   https://github.com/tobetter/linux odroid-5.19.y
head:   0569e1291a824471ea27c9e90132881c0232a3a0
commit: 9aa3f0db97ed4d976f3640f69d177bf27e78099d ODROID-COMMON: power:reset: Add odroid support
date:   8 days ago
config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20220719/202207192004.EsFWlLBl-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://github.com/tobetter/linux/commit/9aa3f0db97ed4d976f3640f69d177bf27e78099d
        git remote add tobetter https://github.com/tobetter/linux
        git fetch --no-tags tobetter odroid-5.19.y
        git checkout 9aa3f0db97ed4d976f3640f69d177bf27e78099d
        # 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 SHELL=/bin/bash drivers/power/reset/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All warnings (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':
   drivers/power/reset/odroid-reboot.c:141:17: error: 'arm_pm_restart' undeclared (first use in this function); did you mean 'alarm_restart'?
     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 +/odroid_card_reset +63 drivers/power/reset/odroid-reboot.c

    62	
  > 63	void odroid_card_reset(void)
    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	

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