virtio: don't set VIRTIO_CONFIG_S_DRIVER_OK twice.

I noticed this with the console device.  It's not *wrong*, just a bit
weird.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index b9f70dfc4751..5ce2aa48fc6e 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -236,7 +236,10 @@ static int virtio_dev_probe(struct device *_d)
         if (err)
                 goto err;
 
-        add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK);
+        /* If probe didn't do it, mark device DRIVER_OK ourselves. */
+        if (!(dev->config->get_status(dev) & VIRTIO_CONFIG_S_DRIVER_OK))
+                virtio_device_ready(dev);
+
         if (drv->scan)
                 drv->scan(dev);