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Message-ID: <1653636572.3092504-1-xuanzhuo@linux.alibaba.com>
Subject: Re: [PATCH V6 1/9] virtio: use virtio_device_ready() in virtio_device_restore()
Date:   Fri, 27 May 2022 15:29:32 +0800
From:   Xuan Zhuo <xuanzhuo@linux.alibaba.com>
To:     Jason Wang <jasowang@redhat.com>
Cc:     tglx@linutronix.de, peterz@infradead.org, paulmck@kernel.org,
        maz@kernel.org, pasic@linux.ibm.com, cohuck@redhat.com,
        eperezma@redhat.com, lulu@redhat.com, sgarzare@redhat.com,
        Vineeth Vijayan <vneethv@linux.ibm.com>,
        Peter Oberparleiter <oberpar@linux.ibm.com>,
        linux-s390@vger.kernel.org, mst@redhat.com, jasowang@redhat.com,
        virtualization@lists.linux-foundation.org,
        linux-kernel@vger.kernel.org
References: <20220527060120.20964-1-jasowang@redhat.com>
 <20220527060120.20964-2-jasowang@redhat.com>
In-Reply-To: <20220527060120.20964-2-jasowang@redhat.com>
Precedence: bulk

On Fri, 27 May 2022 14:01:12 +0800, Jason Wang <jasowang@redhat.com> wrote:
> From: Stefano Garzarella <sgarzare@redhat.com>
>
> It will allow us to do extension on virtio_device_ready() without
> duplicating code.
>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: "Paul E. McKenney" <paulmck@kernel.org>
> Cc: Marc Zyngier <maz@kernel.org>
> Cc: Halil Pasic <pasic@linux.ibm.com>
> Cc: Cornelia Huck <cohuck@redhat.com>
> Cc: Vineeth Vijayan <vneethv@linux.ibm.com>
> Cc: Peter Oberparleiter <oberpar@linux.ibm.com>
> Cc: linux-s390@vger.kernel.org
> Reviewed-by: Cornelia Huck <cohuck@redhat.com>
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> Signed-off-by: Jason Wang <jasowang@redhat.com>

Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>

> ---
>  drivers/virtio/virtio.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
> index ce424c16997d..938e975029d4 100644
> --- a/drivers/virtio/virtio.c
> +++ b/drivers/virtio/virtio.c
> @@ -526,8 +526,9 @@ int virtio_device_restore(struct virtio_device *dev)
>  			goto err;
>  	}
>
> -	/* Finally, tell the device we're all set */
> -	virtio_add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK);
> +	/* If restore didn't do it, mark device DRIVER_OK ourselves. */
> +	if (!(dev->config->get_status(dev) & VIRTIO_CONFIG_S_DRIVER_OK))
> +		virtio_device_ready(dev);
>
>  	virtio_config_enable(dev);
>
> --
> 2.25.1
>