Hi Alastair,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on char-misc/char-misc-testing]
[cannot apply to v5.4-rc5 next-20191025]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Alastair-D-Silva/Add-support-for-OpenCAPI-SCM-devices/20191028-043750
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git da80d2e516eb858eb5bcca7fa5f5a13ed86930e4
config: s390-allmodconfig (attached as .config)
compiler: s390-linux-gcc (GCC) 7.4.0
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
        GCC_VERSION=7.4.0 make.cross ARCH=s390 

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

All errors (new ones prefixed by >>):

   drivers/misc/ocxl/main.c: In function 'init_ocxl':
>> drivers/misc/ocxl/main.c:12:7: error: 'tlbie_capable' undeclared (first use in this function); did you mean 'iommu_capable'?
     if (!tlbie_capable)
          ^~~~~~~~~~~~~
          iommu_capable
   drivers/misc/ocxl/main.c:12:7: note: each undeclared identifier is reported only once for each function it appears in
--
   drivers/misc/ocxl/core.c: In function 'ocxl_function_open':
>> drivers/misc/ocxl/core.c:546:7: error: implicit declaration of function 'radix_enabled'; did you mean 'zdev_enabled'? [-Werror=implicit-function-declaration]
     if (!radix_enabled()) {
          ^~~~~~~~~~~~~
          zdev_enabled
   cc1: some warnings being treated as errors

vim +12 drivers/misc/ocxl/main.c

5ef3166e8a32d7 Frederic Barrat 2018-01-23   7  
5ef3166e8a32d7 Frederic Barrat 2018-01-23   8  static int __init init_ocxl(void)
5ef3166e8a32d7 Frederic Barrat 2018-01-23   9  {
5ef3166e8a32d7 Frederic Barrat 2018-01-23  10  	int rc = 0;
5ef3166e8a32d7 Frederic Barrat 2018-01-23  11  
2275d7b5754a57 Nicholas Piggin 2019-09-03 @12  	if (!tlbie_capable)
2275d7b5754a57 Nicholas Piggin 2019-09-03  13  		return -EINVAL;
2275d7b5754a57 Nicholas Piggin 2019-09-03  14  
5ef3166e8a32d7 Frederic Barrat 2018-01-23  15  	rc = ocxl_file_init();
5ef3166e8a32d7 Frederic Barrat 2018-01-23  16  	if (rc)
5ef3166e8a32d7 Frederic Barrat 2018-01-23  17  		return rc;
5ef3166e8a32d7 Frederic Barrat 2018-01-23  18  
5ef3166e8a32d7 Frederic Barrat 2018-01-23  19  	rc = pci_register_driver(&ocxl_pci_driver);
5ef3166e8a32d7 Frederic Barrat 2018-01-23  20  	if (rc) {
5ef3166e8a32d7 Frederic Barrat 2018-01-23  21  		ocxl_file_exit();
5ef3166e8a32d7 Frederic Barrat 2018-01-23  22  		return rc;
5ef3166e8a32d7 Frederic Barrat 2018-01-23  23  	}
5ef3166e8a32d7 Frederic Barrat 2018-01-23  24  	return 0;
5ef3166e8a32d7 Frederic Barrat 2018-01-23  25  }
5ef3166e8a32d7 Frederic Barrat 2018-01-23  26  

:::::: The code at line 12 was first introduced by commit
:::::: 2275d7b5754a573ffb2ca9e40bd0546eeb986696 powerpc/64s/radix: introduce options to disable use of the tlbie instruction

:::::: TO: Nicholas Piggin <npiggin@gmail.com>
:::::: CC: Michael Ellerman <mpe@ellerman.id.au>

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