diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2010-02-15 20:43:56 +0530 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2010-02-19 15:32:16 -0600 |
| commit | ee4d45be0d791eb8bb0f767cd0f17ea8f697281b (patch) | |
| tree | 892162ac2e46924b7d313a086b772877bbe12f48 /hw/virtio-serial-bus.c | |
| parent | 8bfbde6d35c82cc376681289dae2de5e18a087a4 (diff) | |
virtio-serial: don't set MULTIPORT for 1 port dev
Since commit 98b19252cf1bd97c54bc4613f3537c5ec0aae263, all
serial devices declare MULTIPORT feature.
To allow 0.12 compatibility, we should clear this when
max_nr_ports is 1.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw/virtio-serial-bus.c')
| -rw-r--r-- | hw/virtio-serial-bus.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c index ab456ea396..d0e021932c 100644 --- a/hw/virtio-serial-bus.c +++ b/hw/virtio-serial-bus.c @@ -335,8 +335,10 @@ static void handle_input(VirtIODevice *vdev, VirtQueue *vq) static uint32_t get_features(VirtIODevice *vdev, uint32_t features) { - features |= (1 << VIRTIO_CONSOLE_F_MULTIPORT); - + VirtIOSerial *vser = DO_UPCAST(VirtIOSerial, vdev, vdev); + if (vser->bus->max_nr_ports > 1) { + features |= (1 << VIRTIO_CONSOLE_F_MULTIPORT); + } return features; } |