Hi George,

I love your patch! Yet something to improve:

[auto build test ERROR on pci/next]
[also build test ERROR on linux/master linus/master asm-generic/master v5.9-rc1 next-20200819]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/George-Cherian/PCI-Add-pci_iounmap/20200820-002342
base:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
config: arm-mvebu_v7_defconfig (attached as .config)
compiler: arm-linux-gnueabi-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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

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 >>):

   arm-linux-gnueabi-ld: lib/pci_iomap.o: in function `pci_iounmap':
>> pci_iomap.c:(.text+0xe0): multiple definition of `pci_iounmap'; arch/arm/mm/iomap.o:iomap.c:(.text+0x10): first defined here

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