linux-kernel - Re: [PATCH 2/3] m68k: mac: use time64

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Date:   Tue, 19 Jun 2018 00:55:50 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     kbuild-all@...org, Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Joshua Thompson <funaho@...ai.org>,
        Mathieu Malaterre <malat@...ian.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Greg Ungerer <gerg@...ux-m68k.org>,
        linux-m68k@...ts.linux-m68k.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, y2038@...ts.linaro.org,
        Meelis Roos <mroos@...ux.ee>, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 2/3] m68k: mac: use time64_t in RTC handling

Hi Arnd,

I love your patch! Yet something to improve:

[auto build test ERROR on powerpc/next]
[also build test ERROR on v4.18-rc1 next-20180618]
[cannot apply to m68k/for-next]
[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/Arnd-Bergmann/powerpc-mac-fix-rtc-read-functions/20180618-222412
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: m68k-multi_defconfig (attached as .config)
compiler: m68k-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.2.0 make.cross ARCH=m68k 

All errors (new ones prefixed by >>):

   arch/m68k/mac/misc.c: In function 'cuda_read_time':
>> arch/m68k/mac/misc.c:48:36: error: expected expression before '|' token
     time = (u32)((req.reply[3] << 24( | (req.reply[4] << 16) |
                                       ^
>> arch/m68k/mac/misc.c:48:32: error: called object is not a function or function pointer
     time = (u32)((req.reply[3] << 24( | (req.reply[4] << 16) |
                                   ^~
>> arch/m68k/mac/misc.c:49:43: error: expected ')' before ';' token
           (req.reply[5] << 8) | req.reply[6]);
                                              ^
   arch/m68k/mac/misc.c:55:1: error: expected ')' before '}' token
    }
    ^
>> arch/m68k/mac/misc.c:55:1: error: expected ';' before '}' token
   arch/m68k/mac/misc.c:55:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +48 arch/m68k/mac/misc.c

    36	
    37	#ifdef CONFIG_ADB_CUDA
    38	static time64_t cuda_read_time(void)
    39	{
    40		struct adb_request req;
    41		time64_t time;
    42	
    43		if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
    44			return 0;
    45		while (!req.complete)
    46			cuda_poll();
    47	
  > 48		time = (u32)((req.reply[3] << 24( | (req.reply[4] << 16) |
  > 49			     (req.reply[5] << 8) | req.reply[6]);
    50	
    51		/* it's either after year 2040, or the RTC has gone backwards */
    52		WARN_ON(time < RTC_OFFSET);
    53	
    54		return time - RTC_OFFSET;
  > 55	}
    56	

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