[linux-next:master 5813/6512] arch/s390/kernel/uv.c:423:44: error: 'prot_virt_host' undeclared; did you mean

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   d949689e7383cd5271470f2b99dbe2fd3199bffd
commit: 37564ed834aca26993b77b9b2a0119ec1ba6e00c [5813/6512] s390/uv: add prot virt guest/host indication files
config: s390-randconfig-r002-20210323 (attached as .config)
compiler: s390-linux-gcc (GCC) 9.3.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=37564ed834aca26993b77b9b2a0119ec1ba6e00c
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 37564ed834aca26993b77b9b2a0119ec1ba6e00c
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 

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

All errors (new ones prefixed by >>):

   arch/s390/kernel/uv.c: In function 'uv_is_prot_virt_host':

quoted

arch/s390/kernel/uv.c:423:44: error: 'prot_virt_host' undeclared (first use in this function); did you mean 'prot_virt_guest'?

     423 |  return scnprintf(page, PAGE_SIZE, "%d\n", prot_virt_host);
         |                                            ^~~~~~~~~~~~~~
         |                                            prot_virt_guest
   arch/s390/kernel/uv.c:423:44: note: each undeclared identifier is reported only once for each function it appears in
   arch/s390/kernel/uv.c:424:1: error: control reaches end of non-void function [-Werror=return-type]
     424 | }
         | ^
   cc1: some warnings being treated as errors


vim +423 arch/s390/kernel/uv.c

   419	
   420	static ssize_t uv_is_prot_virt_host(struct kobject *kobj,
   421					    struct kobj_attribute *attr, char *page)
   422	{
 > 423		return scnprintf(page, PAGE_SIZE, "%d\n", prot_virt_host);
   424	}
   425	

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