tree 7b9992d48fcc6917118ff0814ac98bf578a700ad
parent ab0302ee764fd702465aef6d88612cdff4302809
author David Gibson <david@gibson.dropbear.id.au> 1418961446 +1100
committer Amit Shah <amit.shah@redhat.com> 1420442398 +0530

virtio_serial: Don't use vser->config.max_nr_ports internally

A number of places in the virtio_serial driver retrieve the number of ports
from vser->config.max_nr_ports, which is guest-endian.  But for internal
users, we already have a host-endian copy of the number of ports in
vser->serial.max_virtserial_ports.  Using that instead of the config field
removes the need for easy-to-forget byteswapping.

In particular this fixes a bug on incoming migration, where we don't adjust
the endianness vser->config correctly, because it hasn't yet been loaded
from the migration stream when virtio_serial_load_device() is called.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Amit Shah <amit.shah@redhat.com>