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Re: [PATCH RESEND v2 1/2] drm/xen-front: Add support for Xen PV display frontend

Hi Oleksandr,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.16-rc5 next-20180313]
[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/Oleksandr-Andrushchenko/drm-xen-front-Add-support-for-Xen-PV-display-frontend/20180314-014856
        # apt-get install sparse
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__

sparse warnings: (new ones prefixed by >>)

>> drivers/gpu/drm/xen/xen_drm_front.c:420:29: sparse: symbol 'xen_drm_front_platform_info' was not declared. Should it be static?
>> drivers/gpu/drm/xen/xen_drm_front_drv.c:125:19: sparse: symbol 'xen_drm_driver' was not declared. Should it be static?

Please review and possibly fold the followup patch.

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