linux-kernel - Re: [PATCH] um: virt-pci: set device ready in probe()

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Date:   Fri, 10 Jun 2022 21:36:23 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Vincent Whitchurch <vincent.whitchurch@...s.com>,
        Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>
Cc:     kernel@...s.com, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        Jason Wang <jasowang@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        linux-um@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] um: virt-pci: set device ready in probe()

On Fri, 2022-06-10 at 17:12 +0200, Vincent Whitchurch wrote:
> Call virtio_device_ready() to make this driver work after commit
> b4ec69d7e09 ("virtio: harden vring IRQ"), since the driver uses the
> virtqueues in the probe function.  (The virtio core sets the device
> ready when probe returns.)
> 
> Fixes: 8b4ec69d7e09 ("virtio: harden vring IRQ")
> Signed-off-by: Vincent Whitchurch <vincent.whitchurch@...s.com>

Thank you! I had apparently run into this a few days ago, but hadn't had
a chance to debug it yet. This patch fixes my test setup on 5.19-rc1.

Tested-by: Johannes Berg <johannes@...solutions.net>

johannes