On Wed, Jul 14 2021, Jason Gunthorpe <jgg@xxxxxxxxxx> wrote: > The user can open multiple device FDs if it likes, however these open() > functions call vfio_register_notifier() on some device global > state. Calling vfio_register_notifier() twice in will trigger a WARN_ON > from notifier_chain_register() and the first close will wrongly delete the > notifier and more. > > Since these really want the new open/close_device() semantics just change > the functions over. > > Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> > --- > drivers/s390/cio/vfio_ccw_ops.c | 8 ++++---- > drivers/s390/crypto/vfio_ap_ops.c | 8 ++++---- > 2 files changed, 8 insertions(+), 8 deletions(-) Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>