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authorMichael S. Tsirkin <mst@redhat.com>2014-10-15 10:22:31 +1030
committerRusty Russell <rusty@rustcorp.com.au>2014-10-15 10:25:03 +1030
commitf5866db64f341776c2d9ed48080f82459fea6a55 (patch)
tree08491413923d1c821db0403d17920c15d238a4df /drivers/char
parent7a11370e5e6c26566904bb7f08281093a3002ff2 (diff)
virtio_console: enable VQs early
virtio spec requires drivers to set DRIVER_OK before using VQs. This is set automatically after probe returns, virtio console violated this rule by adding inbufs, which causes the VQ to be used directly within probe. To fix, call virtio_device_ready before using VQs. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/virtio_console.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index b585b4789822..d0f25bdc7ba5 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1449,6 +1449,8 @@ static int add_port(struct ports_device *portdev, u32 id)
spin_lock_init(&port->outvq_lock);
init_waitqueue_head(&port->waitqueue);
+ virtio_device_ready(portdev->vdev);
+
/* Fill the in_vq with buffers so the host can send us data. */
nr_added_bufs = fill_queue(port->in_vq, &port->inbuf_lock);
if (!nr_added_bufs) {