[RFC PATCH 15/15] 9p/trans_virtio: Handle virtio_device_ready() failure

[Xie Yongji]

Now virtio_device_ready() will return error if we get
invalid status. Let's handle this case on probe.

Signed-off-by: Xie Yongji <xieyongji@xxxxxxxxxxxxx>
---
 net/9p/trans_virtio.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
index 0960ed1ad7ac..6013d3761b76 100644
--- a/net/9p/trans_virtio.c
+++ b/net/9p/trans_virtio.c
@@ -617,7 +617,9 @@ static int p9_virtio_probe(struct virtio_device *vdev)
 	/* Ceiling limit to avoid denial of service attacks */
 	chan->p9_max_pages = nr_free_buffer_pages()/4;
 
-	virtio_device_ready(vdev);
+	err = virtio_device_ready(vdev);
+	if (err)
+		goto out_free_vc_wq;
 
 	mutex_lock(&virtio_9p_lock);
 	list_add_tail(&chan->chan_list, &virtio_chan_list);
@@ -628,6 +630,8 @@ static int p9_virtio_probe(struct virtio_device *vdev)
 
 	return 0;
 
+out_free_vc_wq:
+	kfree(chan->vc_wq);
 out_remove_file:
 	sysfs_remove_file(&(vdev->dev.kobj), &dev_attr_mount_tag.attr);
 out_free_tag:
-- 
2.11.0