Re: [PATCH] hwrng: cn10k - Enable compile testing

[kernel test robot <lkp@intel.com>]

Hi Herbert,

I love your patch! Yet something to improve:

[auto build test ERROR on char-misc/char-misc-testing]
[also build test ERROR on herbert-cryptodev-2.6/master v5.18-rc3 next-20220421]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/Herbert-Xu/hwrng-cn10k-Enable-compile-testing/20220421-181432
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git c50c29a806113614098efd8da9fd7b48d605ba45
config: arm-randconfig-r023-20220421 (https://download.01.org/0day-ci/archive/20220422/202204221037.taeIlED5-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5bd87350a5ae429baf8f373cb226a57b62f87280)
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/intel-lab-lkp/linux/commit/c804fd47b3fa542852a8cbd9c76ded8a43d32a90
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Herbert-Xu/hwrng-cn10k-Enable-compile-testing/20220421-181432
        git checkout c804fd47b3fa542852a8cbd9c76ded8a43d32a90
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/char/hw_random/

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

All errors (new ones prefixed by >>):

>> drivers/char/hw_random/cn10k-rng.c:55:11: error: call to undeclared function 'readq'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           status = readq(rng->reg_base + RNM_PF_EBG_HEALTH);
                    ^
   drivers/char/hw_random/cn10k-rng.c:71:11: error: call to undeclared function 'readq'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           *value = readq(rng->reg_base + RNM_PF_RANDOM);
                    ^
   2 errors generated.


vim +/readq +55 drivers/char/hw_random/cn10k-rng.c

38e9791a020904 Sunil Goutham 2021-12-14  45  
38e9791a020904 Sunil Goutham 2021-12-14  46  static int check_rng_health(struct cn10k_rng *rng)
38e9791a020904 Sunil Goutham 2021-12-14  47  {
38e9791a020904 Sunil Goutham 2021-12-14  48  	u64 status;
38e9791a020904 Sunil Goutham 2021-12-14  49  	int err;
38e9791a020904 Sunil Goutham 2021-12-14  50  
38e9791a020904 Sunil Goutham 2021-12-14  51  	/* Skip checking health */
38e9791a020904 Sunil Goutham 2021-12-14  52  	if (!rng->reg_base)
38e9791a020904 Sunil Goutham 2021-12-14  53  		return 0;
38e9791a020904 Sunil Goutham 2021-12-14  54  
38e9791a020904 Sunil Goutham 2021-12-14 @55  	status = readq(rng->reg_base + RNM_PF_EBG_HEALTH);
38e9791a020904 Sunil Goutham 2021-12-14  56  	if (status & BIT_ULL(20)) {
38e9791a020904 Sunil Goutham 2021-12-14  57  		err = reset_rng_health_state(rng);
38e9791a020904 Sunil Goutham 2021-12-14  58  		if (err) {
38e9791a020904 Sunil Goutham 2021-12-14  59  			dev_err(&rng->pdev->dev, "HWRNG: Health test failed (status=%llx)\n",
38e9791a020904 Sunil Goutham 2021-12-14  60  					status);
38e9791a020904 Sunil Goutham 2021-12-14  61  			dev_err(&rng->pdev->dev, "HWRNG: error during reset\n");
38e9791a020904 Sunil Goutham 2021-12-14  62  		}
38e9791a020904 Sunil Goutham 2021-12-14  63  	}
38e9791a020904 Sunil Goutham 2021-12-14  64  	return 0;
38e9791a020904 Sunil Goutham 2021-12-14  65  }
38e9791a020904 Sunil Goutham 2021-12-14  66  

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