Hi Mauro,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20180411]
[also build test ERROR on v4.16]
[cannot apply to linuxtv-media/master staging/staging-testing v4.16 v4.16-rc7 v4.16-rc6]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Mauro-Carvalho-Chehab/media-staging-atomisp-fix-number-conversion/20180414-000700
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

Note: the linux-review/Mauro-Carvalho-Chehab/media-staging-atomisp-fix-number-conversion/20180414-000700 HEAD 3b98aee6f72133addf14b8bc4fc71c2978bf81f9 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

>> ERROR: "mmu_reg_store" [drivers/staging/media/atomisp/pci/atomisp2/atomisp.ko] undefined!
>> ERROR: "mmu_reg_load" [drivers/staging/media/atomisp/pci/atomisp2/atomisp.ko] undefined!

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