From: Stefano Garzarella <sgarzare@redhat.com>
Date: Wed, 23 Mar 2022 17:36:25 +0000 (+0100)
Subject: vsock/virtio: enable VQs early on probe
X-Git-Tag: v5.15.73~5576
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8b320893461cfdfbdb89f183737e1d7df67d7d7a;p=platform%2Fkernel%2Flinux-rpi.git

vsock/virtio: enable VQs early on probe

[ Upstream commit 88704454ef8b00ea91537ae0d47d9348077e0e72 ]

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>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
index 4a8548b..c5f936f 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);