tree 303ac359547bf20530401a22ee0e42548449d202
parent 15ade5d2e7775667cf191cf2f94327a4889f8b9d
author Dave Airlie <airlied@redhat.com> 1554434233 +1000
committer Dave Airlie <airlied@redhat.com> 1554704402 +1000

drm/udl: add a release method and delay modeset teardown

If we unplug a udl device, the usb callback with deinit the
mode_config struct, however userspace will still have an open
file descriptor and a framebuffer on that device. When userspace
closes the fd, we'll oops because it'll try and look stuff up
in the object idr which we've destroyed.

This punts destroying the mode objects until release time instead.

Cc: stable@vger.kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190405031715.5959-2-airlied@gmail.com