vduse: store control device pointer

This helps log the errors in next patches.  The alternative is to
perform a linear search for it with class_find_device_by_devt(class, devt),
as device_destroy do for cleaning.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260707122502.239022-2-eperezma@redhat.com>
This commit is contained in:
Eugenio Pérez 2026-07-07 14:24:59 +02:00 • committed by Michael S. Tsirkin
commit 0ff906166f