linux-kernel - Re: [PATCH] mfd: mc13xxx-spi: make SPI buffers DMA-safe

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Message-ID: <201612200628.H2XorK7M%fengguang.wu@intel.com>
Date:   Tue, 20 Dec 2016 06:43:19 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Marcus Folkesson <marcus.folkesson@...il.com>
Cc:     kbuild-all@...org, Eric Piel <eric.piel@...mplin-utc.net>,
        linux-kernel@...r.kernel.org,
        Marcus Folkesson <marcus.folkesson@...il.com>
Subject: Re: [PATCH] mfd: mc13xxx-spi: make SPI buffers DMA-safe

Hi Marcus,

[auto build test ERROR on ljones-mfd/for-mfd-next]
[also build test ERROR on v4.9 next-20161219]
[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/Marcus-Folkesson/mfd-mc13xxx-spi-make-SPI-buffers-DMA-safe/20161209-212034
base:   https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next
config: s390-allmodconfig (attached as .config)
compiler: s390x-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=s390 

All errors (new ones prefixed by >>):

   drivers/mfd/mc13xxx-spi.c: In function 'mc13xxx_spi_read':
>> drivers/mfd/mc13xxx-spi.c:71:20: error: 'struct mc13xxx' has no member named 'wbuf'
      .tx_buf = mc13xxx->wbuf,
                       ^~
>> drivers/mfd/mc13xxx-spi.c:72:20: error: 'struct mc13xxx' has no member named 'rbuf'
      .rx_buf = mc13xxx->rbuf,
                       ^~
   drivers/mfd/mc13xxx-spi.c:82:9: error: 'struct mc13xxx' has no member named 'wbuf'
     mc13xxx->wbuf[0] = *(unsigned char *)reg;
            ^~
   drivers/mfd/mc13xxx-spi.c:87:20: error: 'struct mc13xxx' has no member named 'rbuf'
     memcpy(p, &mc13xxx->rbuf[1], 3);
                       ^~

vim +71 drivers/mfd/mc13xxx-spi.c

    65	{
    66		unsigned char *p = val;
    67		struct device *dev = context;
    68		struct spi_device *spi = to_spi_device(dev);
    69		struct mc13xxx *mc13xxx = dev_get_drvdata(dev);
    70		struct spi_transfer t = {
  > 71			.tx_buf = mc13xxx->wbuf,
  > 72			.rx_buf = mc13xxx->rbuf,
    73			.len = 4,
    74		};
    75	

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