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virtio: make virtio_bus const

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Now that the driver core can properly handle constant struct bus_type,
move the virtio_bus variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Message-Id: <20240204-bus_cleanup-virtio-v1-1-3bcb2212aaa0@marliere.net>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Ricardo B. Marliere 2024-02-04 17:52:51 -03:00 committed by Michael S. Tsirkin
parent 8169ed6220
commit 2b666ee296
1 changed files with 1 additions and 1 deletions
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2
drivers/virtio/virtio.c
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@ -353,7 +353,7 @@ static void virtio_dev_remove(struct device *_d)
of_node_put(dev->dev.of_node);
}
static struct bus_type virtio_bus = {
static const struct bus_type virtio_bus = {
.name = "virtio",
.match = virtio_dev_match,
.dev_groups = virtio_dev_groups,