RFC: drm: Restrict vblank ioctl to master

Somehow this escaped us, this is a KMS ioctl which should only be used
by the master (which is the thing that's also in control of kms
resources). Everything else is bound to result in fail.

Clients shouldn't have a trouble coping with this, since a pile of
drivers don't support vblank waits (or just randomly fall over when
using them). Note that the big motivation for abusing this like mad
seems to be that EGL doesn't have OML_sync, but somehow it didn't
cross anyone's mind that adding OML_sync to EGL would be useful. This
patch is meant to essentially start kicking that can from the back
end.

Update: Kodi maintainers removed this code on 7th August, to be
released in Kodi v18 in Sept 2018.

v2: Drop accidental hunk (Michel).

v3: Also add the new crtc sequence ioctls that have been added
meanwhile ...

Cc: Michel Dänzer <michel@daenzer.net>
Cc: fritsch@kodi.tv
Cc: fernetmenta@kodi.tv
Cc: Rainer Hochecker <fernetmenta@kodi.tv>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

0 files changed, 0 insertions, 0 deletions