tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   291009f656e8eaebbdfd3a8d99f6b190a9ce9deb
commit: 25259f7a5de2de9d67793dc584b15c83a3134c93 clocksource/drivers/timer-microchip-pit64b: Select CONFIG_TIMER_OF
date:   10 months ago
config: s390-randconfig-r035-20210209 (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/torvalds/linux.git/commit/?id=25259f7a5de2de9d67793dc584b15c83a3134c93
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 25259f7a5de2de9d67793dc584b15c83a3134c93
        # 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 <lkp@intel.com>

All errors (new ones prefixed by >>):

   s390-linux-ld: kernel/dma/coherent.o: in function `dma_init_coherent_memory':
   coherent.c:(.text+0x440): undefined reference to `memremap'
   s390-linux-ld: coherent.c:(.text+0x510): undefined reference to `memunmap'
   s390-linux-ld: kernel/dma/coherent.o: in function `dma_declare_coherent_memory':
   coherent.c:(.text+0x93c): undefined reference to `memunmap'
   s390-linux-ld: drivers/irqchip/irq-al-fic.o: in function `al_fic_init_dt':
   irq-al-fic.c:(.init.text+0x3a): undefined reference to `of_iomap'
   s390-linux-ld: irq-al-fic.c:(.init.text+0x270): undefined reference to `iounmap'
   s390-linux-ld: drivers/input/serio/apbps2.o: in function `apbps2_of_probe':
   apbps2.c:(.text+0x30c): undefined reference to `devm_ioremap_resource'
   s390-linux-ld: drivers/clocksource/timer-of.o: in function `timer_of_init':
   timer-of.c:(.init.text+0x56): undefined reference to `of_iomap'
>> s390-linux-ld: timer-of.c:(.init.text+0x24e): undefined reference to `iounmap'
   s390-linux-ld: drivers/clocksource/timer-of.o: in function `timer_of_cleanup':
   timer-of.c:(.init.text+0x320): undefined reference to `iounmap'

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