[CFR][PATCH] drm2: don't assume that dev->driver->max_ioctl > *dev->driver->compat_ioctls_nr

Konstantin, *, good day.

I noticed that the current ioctl processing code for drm2 implicitely
assumes that the number of native ioctls is higher than that of 32-bit
compat ones, so it immediately gives EINVAL when
nr >= dev->driver->max_ioctl.  Seems that in future such assumption
may not be true in all cases.

This can be fixed with the following patch:
  http://codelabs.ru/fbsd/patches/drm2/drm_drv-untangle-32bit-compat.diff

Any thoughts on it?

Thanks.
-- 
Eygene Ryabinkin                                        ,,,^..^,,,
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