Re: [PATCH v2 08/17] libnvdimm: introduce nvdimm_flush() and nvdimm_has_flush()

[kbuild test robot <lkp-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

Hi,

[auto build test ERROR on linux-nvdimm/libnvdimm-for-next]
[also build test ERROR on next-20160708]
[cannot apply to v4.7-rc6]
[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/Dan-Williams/replace-pcommit-with-ADR-or-directed-flushing/20160710-113558
base:   https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git libnvdimm-for-next
config: i386-randconfig-r0-201628 (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/nvdimm/region_devs.c: In function 'nvdimm_flush':
>> drivers/nvdimm/region_devs.c:887:4: error: implicit declaration of function 'writeq' [-Werror=implicit-function-declaration]
       writeq(1, ndrd->flush_wpq[i][0]);
       ^~~~~~
   cc1: some warnings being treated as errors

vim +/writeq +887 drivers/nvdimm/region_devs.c

   881		 * writes to avoid the cache via arch_memcpy_to_pmem().  The
   882		 * final wmb() ensures ordering for the NVDIMM flush write.
   883		 */
   884		wmb();
   885		for (i = 0; i < nd_region->ndr_mappings; i++)
   886			if (ndrd->flush_wpq[i][0])
 > 887				writeq(1, ndrd->flush_wpq[i][0]);
   888		wmb();
   889	}
   890	EXPORT_SYMBOL_GPL(nvdimm_flush);

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