[mmotm:master 152/178] include/linux/kexec.h:356:9: error: implicit declaration of function 'phys_to_virt'

[kbuild test robot <fengguang.wu@intel.com>]

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tree:   git://git.cmpxchg.org/linux-mmotm.git master
head:   2e0066ec9585a5074c8040d639c3c669eb4e905f
commit: 60c8a7d9e20b888121b304895074928bf9b69029 [152/178] kexec: allow architectures to override boot mapping
config: sh-sh7785lcr_32bit_defconfig (attached as .config)
compiler: sh4-linux-gnu-gcc (Debian 5.3.1-8) 5.3.1 20160205
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 60c8a7d9e20b888121b304895074928bf9b69029
        # save the attached .config to linux build tree
        make.cross ARCH=sh 

All error/warnings (new ones prefixed by >>):

   In file included from arch/sh/kernel/reboot.c:2:0:
   include/linux/kexec.h: In function 'boot_phys_to_virt':
>> include/linux/kexec.h:356:9: error: implicit declaration of function 'phys_to_virt' [-Werror=implicit-function-declaration]
     return phys_to_virt(boot_phys_to_phys(entry));
            ^
>> include/linux/kexec.h:356:9: error: return makes pointer from integer without a cast [-Werror=int-conversion]
   cc1: all warnings being treated as errors
--
   In file included from kernel/ksysfs.c:16:0:
   include/linux/kexec.h: In function 'boot_phys_to_virt':
>> include/linux/kexec.h:356:9: error: implicit declaration of function 'phys_to_virt' [-Werror=implicit-function-declaration]
     return phys_to_virt(boot_phys_to_phys(entry));
            ^
>> include/linux/kexec.h:356:9: warning: return makes pointer from integer without a cast [-Wint-conversion]
   cc1: some warnings being treated as errors

vim +/phys_to_virt +356 include/linux/kexec.h

   350	{
   351		return phys_to_boot_phys(__pa((unsigned long)addr));
   352	}
   353	
   354	static inline void *boot_phys_to_virt(unsigned long entry)
   355	{
 > 356		return phys_to_virt(boot_phys_to_phys(entry));
   357	}
   358	
   359	#else /* !CONFIG_KEXEC_CORE */

---
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