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Date:   Thu, 28 Feb 2019 00:00:30 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Elie Morisse <syniurge@...il.com>
Cc:     kbuild-all@...org, linux-i2c@...r.kernel.org,
        Wolfram Sang <wsa@...-dreams.de>,
        Nehal-bakulchandra.Shah@....com, Shyam-sundar.S-k@....com,
        sandeep.singh@....com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v16] i2c: Add drivers for the AMD PCIe MP2 I2C controller

Hi Elie,

I love your patch! Yet something to improve:

[auto build test ERROR on wsa/i2c/for-next]
[also build test ERROR on v5.0-rc8 next-20190227]
[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/Elie-Morisse/i2c-Add-drivers-for-the-AMD-PCIe-MP2-I2C-controller/20190227-225657
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next
config: i386-allmodconfig (attached as .config)
compiler: gcc-8 (Debian 8.2.0-21) 8.2.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/i2c/busses/i2c-amd-mp2-pci.c: In function 'amd_mp2_rw':
>> drivers/i2c/busses/i2c-amd-mp2-pci.c:105:3: error: implicit declaration of function 'writeq'; did you mean 'writel'? [-Werror=implicit-function-declaration]
      writeq((u64)i2c_common->dma_addr,
      ^~~~~~
      writel
   cc1: some warnings being treated as errors

vim +105 drivers/i2c/busses/i2c-amd-mp2-pci.c

    88	
    89	int amd_mp2_rw(struct amd_i2c_common *i2c_common, enum i2c_cmd reqcmd)
    90	{
    91		struct amd_mp2_dev *privdata = i2c_common->mp2_dev;
    92		union i2c_cmd_base i2c_cmd_base;
    93	
    94		amd_mp2_cmd_rw_fill(i2c_common, &i2c_cmd_base, reqcmd);
    95		amd_mp2_c2p_mutex_lock(i2c_common);
    96	
    97		if (i2c_common->msg->len <= 32) {
    98			i2c_cmd_base.s.mem_type = use_c2pmsg;
    99			if (reqcmd == i2c_write)
   100				memcpy_toio(privdata->mmio + AMD_C2P_MSG2,
   101					    i2c_common->msg->buf,
   102					    i2c_common->msg->len);
   103		} else {
   104			i2c_cmd_base.s.mem_type = use_dram;
 > 105			writeq((u64)i2c_common->dma_addr,
   106			       privdata->mmio + AMD_C2P_MSG2);
   107		}
   108	
   109		return amd_mp2_cmd(i2c_common, i2c_cmd_base);
   110	}
   111	EXPORT_SYMBOL_GPL(amd_mp2_rw);
   112	

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