Re: [PATCH 20/23] cxl/port: Introduce a port driver

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Hi Ben,

I love your patch! Yet something to improve:

[auto build test ERROR on 53989fad1286e652ea3655ae3367ba698da8d2ff]

url:    https://github.com/0day-ci/linux/commits/Ben-Widawsky/Add-drivers-for-CXL-ports-and-mem-devices/20211120-080513
base:   53989fad1286e652ea3655ae3367ba698da8d2ff
config: arm-randconfig-r034-20211119 (attached as .config)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/0day-ci/linux/commit/8ff43502e84dd4fa1296a131cb0cc82146389db4
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Ben-Widawsky/Add-drivers-for-CXL-ports-and-mem-devices/20211120-080513
        git checkout 8ff43502e84dd4fa1296a131cb0cc82146389db4
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

>> drivers/cxl/port.c:105:9: error: implicit declaration of function 'ioread64_hi_lo' [-Werror,-Wimplicit-function-declaration]
           return ioread64_hi_lo(hdm_decoder +
                  ^
   drivers/cxl/port.c:191:11: error: implicit declaration of function 'ioread64_hi_lo' [-Werror,-Wimplicit-function-declaration]
                           base = ioread64_hi_lo(decoderN(BASE_LOW_OFFSET, i));
                                  ^
   2 errors generated.


vim +/ioread64_hi_lo +105 drivers/cxl/port.c

    97	
    98	static u64 get_decoder_size(void __iomem *hdm_decoder, int n)
    99	{
   100		u32 ctrl = readl(hdm_decoder + CXL_HDM_DECODER0_CTRL_OFFSET(n));
   101	
   102		if (ctrl & CXL_HDM_DECODER0_CTRL_COMMITTED)
   103			return 0;
   104	
 > 105		return ioread64_hi_lo(hdm_decoder +
   106				      CXL_HDM_DECODER0_SIZE_LOW_OFFSET(n));
   107	}
   108	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Attachment: .config.gz
Description: application/gzip


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