Re: [PATCH] watchdog: Add an IPMI watchdog driver in the watchdog framework

[kernel test robot <lkp@intel.com>]

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on cminyard-ipmi/for-next]
[also build test WARNING on groeck-staging/hwmon-next linus/master v6.3 next-20230428]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/minyard-acm-org/watchdog-Add-an-IPMI-watchdog-driver-in-the-watchdog-framework/20230502-230545
base:   https://github.com/cminyard/linux-ipmi for-next
patch link:    https://lore.kernel.org/r/20230502150215.1266526-1-minyard%40acm.org
patch subject: [PATCH] watchdog: Add an IPMI watchdog driver in the watchdog framework
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20230503/202305030305.ZLru06GG-lkp@intel.com/config)
compiler: sparc64-linux-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/intel-lab-lkp/linux/commit/3138708f587acacac7e95f3098e7a9587866a66e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review minyard-acm-org/watchdog-Add-an-IPMI-watchdog-driver-in-the-watchdog-framework/20230502-230545
        git checkout 3138708f587acacac7e95f3098e7a9587866a66e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc SHELL=/bin/bash drivers/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305030305.ZLru06GG-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/watchdog/ipmi_wdt.c:515:5: warning: no previous prototype for 'ipmi_wdt_start' [-Wmissing-prototypes]
     515 | int ipmi_wdt_start(struct watchdog_device *wd)
         |     ^~~~~~~~~~~~~~
>> drivers/watchdog/ipmi_wdt.c:529:5: warning: no previous prototype for 'ipmi_wdt_stop' [-Wmissing-prototypes]
     529 | int ipmi_wdt_stop(struct watchdog_device *wd)
         |     ^~~~~~~~~~~~~
>> drivers/watchdog/ipmi_wdt.c:539:5: warning: no previous prototype for 'ipmi_wdt_ping' [-Wmissing-prototypes]
     539 | int ipmi_wdt_ping(struct watchdog_device *wd)
         |     ^~~~~~~~~~~~~
>> drivers/watchdog/ipmi_wdt.c:550:5: warning: no previous prototype for 'ipmi_wdt_set_timeout' [-Wmissing-prototypes]
     550 | int ipmi_wdt_set_timeout(struct watchdog_device *wd, unsigned int to)
         |     ^~~~~~~~~~~~~~~~~~~~
   drivers/watchdog/ipmi_wdt.c:204:17: warning: 'preop_panic_excl' defined but not used [-Wunused-variable]
     204 | static atomic_t preop_panic_excl = ATOMIC_INIT(-1);
         |                 ^~~~~~~~~~~~~~~~


vim +/ipmi_wdt_start +515 drivers/watchdog/ipmi_wdt.c

   514	
 > 515	int ipmi_wdt_start(struct watchdog_device *wd)
   516	{
   517		int rv;
   518	
   519		mutex_lock(&ipmi_watchdog_mutex);
   520		ipmi_watchdog_state = action_val;
   521		rv = _ipmi_set_timeout(IPMI_SET_TIMEOUT_FORCE_HB);
   522		if (rv)
   523			ipmi_watchdog_state = WDOG_TIMEOUT_NONE;
   524		mutex_unlock(&ipmi_watchdog_mutex);
   525	
   526		return rv;
   527	}
   528	
 > 529	int ipmi_wdt_stop(struct watchdog_device *wd)
   530	{
   531		mutex_lock(&ipmi_watchdog_mutex);
   532		ipmi_watchdog_state = WDOG_TIMEOUT_NONE;
   533		_ipmi_set_timeout(IPMI_SET_TIMEOUT_NO_HB);
   534		mutex_unlock(&ipmi_watchdog_mutex);
   535	
   536		return 0;
   537	}
   538	
 > 539	int ipmi_wdt_ping(struct watchdog_device *wd)
   540	{
   541		int rv;
   542	
   543		mutex_lock(&ipmi_watchdog_mutex);
   544		rv = _ipmi_heartbeat();
   545		mutex_unlock(&ipmi_watchdog_mutex);
   546	
   547		return rv;
   548	}
   549	
 > 550	int ipmi_wdt_set_timeout(struct watchdog_device *wd, unsigned int to)
   551	{
   552		int rv;
   553	
   554		mutex_lock(&ipmi_watchdog_mutex);
   555		timeout = to;
   556		rv = _ipmi_set_timeout(IPMI_SET_TIMEOUT_HB_IF_NECESSARY);
   557		mutex_unlock(&ipmi_watchdog_mutex);
   558	
   559		return rv;
   560	}
   561	

-- 
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https://github.com/intel/lkp-tests