Hi Linus,

I love your patch! Perhaps something to improve:

[auto build test WARNING on soc/for-next]
[also build test WARNING on pci/next block/for-next linus/master v5.12 next-20210503]
[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/Linus-Walleij/IXP4xx-PCI-rework/20210504-051847
base:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
config: arm-allyesconfig (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
        # https://github.com/0day-ci/linux/commit/f3c7dd73e6c1b358e1f61a4b3a186ce5b336deaf
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Linus-Walleij/IXP4xx-PCI-rework/20210504-051847
        git checkout f3c7dd73e6c1b358e1f61a4b3a186ce5b336deaf
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=arm 

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

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> WARNING: modpost: vmlinux.o(.text+0x22fe654): Section mismatch in reference from the function ixp4xx_pci_probe() to the function .init.text:hook_fault_code()
The function ixp4xx_pci_probe() references
the function __init hook_fault_code().
This is often because ixp4xx_pci_probe lacks a __init
annotation or the annotation of hook_fault_code is wrong.

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