linux-kernel - Re: [PATCH v2] 8250-men-mcb: add support for 16z025 and 16z057

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Date:   Sat, 3 Mar 2018 12:51:28 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Michael Moese <mmoese@...e.de>
Cc:     kbuild-all@...org, Greg KH <gregkh@...uxfoundation.org>,
        Linux Kernel Mailinglist <linux-kernel@...r.kernel.org>,
        Johannes Thumshirn <jthumshirn@...e.de>,
        Michael Moese <mmoese@...e.de>,
        Andreas Geissler <andreas.geissler@....de>,
        Ben Turner <ben.turner@...et.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>
Subject: Re: [PATCH v2] 8250-men-mcb: add support for 16z025 and 16z057

Hi Michael,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tty/tty-testing]
[also build test ERROR on v4.16-rc3 next-20180302]
[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/Michael-Moese/8250-men-mcb-add-support-for-16z025-and-16z057/20180303-104548
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
config: sparc64-allyesconfig (attached as .config)
compiler: sparc64-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
        make.cross ARCH=sparc64 

All errors (new ones prefixed by >>):

   drivers/tty/serial/8250/8250_men_mcb.c: In function 'get_num_ports':
>> drivers/tty/serial/8250/8250_men_mcb.c:59:10: error: implicit declaration of function 'readb' [-Werror=implicit-function-declaration]
      return readb(membase) >> 4;
             ^~~~~
   cc1: some warnings being treated as errors

vim +/readb +59 drivers/tty/serial/8250/8250_men_mcb.c

    51	
    52	static unsigned int get_num_ports(struct mcb_device *mdev,
    53					  void __iomem *membase)
    54	{
    55		switch (mdev->id) {
    56		case MEN_UART_ID_Z125:
    57			return 1U;
    58		case MEN_UART_ID_Z025:
  > 59			return readb(membase) >> 4;
    60		case MEN_UART_ID_Z057:
    61			return 4U;
    62		default:
    63			dev_err(&mdev->dev, "no supported device!\n");
    64			return -ENODEV;
    65		}
    66	}
    67	

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

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