[PATCH net v3 3/3] vsock/virtio: enable VQs early on probe

From: Stefano Garzarella <sgarzare@redhat.com>
To: netdev@vger.kernel.org
Cc: Jakub Kicinski <kuba@kernel.org>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Asias He <asias@redhat.com>,
	Arseny Krasnov <arseny.krasnov@kaspersky.com>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	Paolo Abeni <pabeni@redhat.com>,
	linux-kernel@vger.kernel.org,
	Stefano Garzarella <sgarzare@redhat.com>,
	virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
	"David S. Miller" <davem@davemloft.net>
Subject: [PATCH net v3 3/3] vsock/virtio: enable VQs early on probe
Date: Wed, 23 Mar 2022 18:36:25 +0100	[thread overview]
Message-ID: <20220323173625.91119-4-sgarzare@redhat.com> (raw)
In-Reply-To: <20220323173625.91119-1-sgarzare@redhat.com>

virtio spec requires drivers to set DRIVER_OK before using VQs.
This is set automatically after probe returns, but virtio-vsock
driver uses VQs in the probe function to fill rx and event VQs
with new buffers.

Let's fix this, calling virtio_device_ready() before using VQs
in the probe function.

Fixes: 0ea9e1d3a9e3 ("VSOCK: Introduce virtio_transport.ko")
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
---
 net/vmw_vsock/virtio_transport.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
index 3954d3be9083..ba1c8cc0c467 100644
--- a/net/vmw_vsock/virtio_transport.c
+++ b/net/vmw_vsock/virtio_transport.c
@@ -627,6 +627,8 @@ static int virtio_vsock_probe(struct virtio_device *vdev)
 
 	vdev->priv = vsock;
 
+	virtio_device_ready(vdev);
+
 	mutex_lock(&vsock->tx_lock);
 	vsock->tx_run = true;
 	mutex_unlock(&vsock->tx_lock);
-- 
2.35.1

