linux-kernel - Re: [PATCH 4/5] watchdog: Provide watchdog

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Date:   Tue, 23 May 2017 22:17:36 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Nicholas Piggin <npiggin@...il.com>
Cc:     kbuild-all@...org, Don Zickus <dzickus@...hat.com>,
        Nicholas Piggin <npiggin@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/5] watchdog: Provide watchdog_reconfigure() for arch
 watchdogs

Hi Nicholas,

[auto build test WARNING on linus/master]
[also build test WARNING on v4.12-rc2 next-20170523]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Nicholas-Piggin/Improve-watchdog-config-for-arch-watchdogs/20170523-200254
config: tile-tilegx_defconfig (attached as .config)
compiler: tilegx-linux-gcc (GCC) 4.6.2
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=tile 

All warnings (new ones prefixed by >>):

   kernel/watchdog.c: In function 'watchdog_update_cpus':
>> kernel/watchdog.c:632:1: warning: no return statement in function returning non-void [-Wreturn-type]

vim +632 kernel/watchdog.c

   616	
   617	static void watchdog_unpark_threads(void)
   618	{
   619	}
   620	
   621	static int watchdog_enable_all_cpus(void)
   622	{
   623		return 0;
   624	}
   625	
   626	static void watchdog_disable_all_cpus(void)
   627	{
   628	}
   629	
   630	static int watchdog_update_cpus(void)
   631	{
 > 632	}
   633	
   634	static void set_sample_period(void)
   635	{
   636	}
   637	#endif /* SOFTLOCKUP */
   638	
   639	/*
   640	 * Suspend the hard and soft lockup detector by parking the watchdog threads.

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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