diff options
Diffstat (limited to 'lib/libvirtio/virtio-serial.c')
| -rw-r--r-- | lib/libvirtio/virtio-serial.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/libvirtio/virtio-serial.c b/lib/libvirtio/virtio-serial.c index d1503a4..92afb02 100644 --- a/lib/libvirtio/virtio-serial.c +++ b/lib/libvirtio/virtio-serial.c @@ -102,6 +102,10 @@ void virtio_serial_shutdown(struct virtio_device *dev) /* Quiesce device */ virtio_set_status(dev, VIRTIO_STAT_FAILED); + /* Stop queues */ + virtio_queue_term_vq(dev, &dev->vq[TX_Q], TX_Q); + virtio_queue_term_vq(dev, &dev->vq[RX_Q], RX_Q); + /* Reset device */ virtio_reset_device(dev); } @@ -114,6 +118,9 @@ int virtio_serial_putchar(struct virtio_device *dev, char c) uint16_t last_used_idx, avail_idx; struct vqs *vq = &dev->vq[TX_Q]; + if (!vq->desc) + return 0; + avail_idx = virtio_modern16_to_cpu(dev, vq->avail->idx); last_used_idx = vq->used->idx; |