Hi Andrew,

It's probably a bug fix that unveils the link errors.

tree:   git://git.cmpxchg.org/linux-mmotm.git master
head:   89331b857195aa00660fb19f1383924e95f7709e
commit: d9cc9c2bd830a180cc8ac762a739fcfd3fc6c330 [236/260] linux-next-git-rejects
config: sparc-allyesconfig (attached as .config)
compiler: sparc64-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
        git checkout d9cc9c2bd830a180cc8ac762a739fcfd3fc6c330
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=sparc 

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

All errors (new ones prefixed by >>):

   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   drivers/mmc/host/sdhci-of-aspeed.o: In function `aspeed_sdc_probe':
>> sdhci-of-aspeed.c:(.text+0xf8): undefined reference to `of_platform_device_create'

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