[PATCH] gpu/drm: Use u64_to_user_pointer

[Joe Perches]

On Sat, 2016-03-19 at 01:39 +0800, kbuild test robot wrote:
> Hi Joe,
> 
> [auto build test WARNING on drm/drm-next]
> [also build test WARNING on next-20160318]
> [cannot apply to v4.5]
> [if your patch is applied to the wrong git tree, please drop us a
> note to help improving the system]

Thanks, but this depends on Gustavo's patches too.