virtio: add virtio_device_shutdown() helper

Browse source

The generic virtio bus .shutdown handler, virtio_dev_shutdown(), breaks
and resets a device once it has established that the driver has no
.shutdown of its own. A driver that does implement .shutdown, to quiesce
its own activity first, still needs the same break and reset afterwards
and would otherwise have to open code it.

Factor the break + synchronize_cbs + reset sequence out of
virtio_dev_shutdown() into an exported virtio_device_shutdown() helper so
such drivers can reuse it instead of duplicating the core logic.

No functional change.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260624140846.2616797-2-den@openvz.org>

...

This commit is contained in:

Denis V. Lunev 2026-06-24 16:08:43 +02:00 • committed by Michael S. Tsirkin

parent 2187be2121

commit 0d8aebe089

2 changed files with 28 additions and 14 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

41

drivers/virtio/virtio.c

View file

1

include/linux/virtio.h

View file