drm/i915: delay master/sarea deref for legacy ioctls

... past the check for DRIVER_MODESET. Avoids races with userspace
opening a master and our sarea setup.

Cc: Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2014-02-12 23:50:06 +01:00
commit 4d10cc0f86