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virtio_console: enable VQs early on restore 

virtio spec requires drivers to set DRIVER_OK before using VQs.
This is set automatically after resume returns, virtio console violated this
rule by adding inbufs, which causes the VQ to be used directly within
restore.

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>
hifive-unleashed-5.1
Michael S. Tsirkin 2014-10-15 10:22:32 +10:30 committed by Rusty Russell
parent 52c9cf1ac3
commit 401bbdc901
1 changed files with 2 additions and 0 deletions
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2
drivers/char/virtio_console.c
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@ -2184,6 +2184,8 @@ static int virtcons_restore(struct virtio_device *vdev)
if (ret)
return ret;
virtio_device_ready(portdev->vdev);
if (use_multiport(portdev))
fill_queue(portdev->c_ivq, &portdev->c_ivq_lock);