[PATCH v1 12/21] net/virtio-user: fix device starting failure handling

[Xia, Chenbo]

> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin at redhat.com>
> Sent: Wednesday, November 30, 2022 11:57 PM
> To: dev at dpdk.org; Xia, Chenbo <chenbo.xia at intel.com>;
> david.marchand at redhat.com; eperezma at redhat.com
> Cc: Maxime Coquelin <maxime.coquelin at redhat.com>; stable at dpdk.org
> Subject: [PATCH v1 12/21] net/virtio-user: fix device starting failure
> handling
> 
> If the device fails to start, read the status from the
> device and return early.
> 
> Fixes: 57912824615f ("net/virtio-user: support vhost status setting")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> ---
>  drivers/net/virtio/virtio_user_ethdev.c | 11 ++++++++---
>  1 file changed, 8 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/virtio/virtio_user_ethdev.c
> b/drivers/net/virtio/virtio_user_ethdev.c
> index d32abec327..78b1ed9ace 100644
> --- a/drivers/net/virtio/virtio_user_ethdev.c
> +++ b/drivers/net/virtio/virtio_user_ethdev.c
> @@ -90,10 +90,15 @@ virtio_user_set_status(struct virtio_hw *hw, uint8_t
> status)
>  	if (status & VIRTIO_CONFIG_STATUS_FEATURES_OK &&
>  			~old_status & VIRTIO_CONFIG_STATUS_FEATURES_OK)
>  		virtio_user_dev_set_features(dev);
> -	if (status & VIRTIO_CONFIG_STATUS_DRIVER_OK)
> -		virtio_user_start_device(dev);
> -	else if (status == VIRTIO_CONFIG_STATUS_RESET)
> +
> +	if (status & VIRTIO_CONFIG_STATUS_DRIVER_OK) {
> +		if (virtio_user_start_device(dev)) {
> +			virtio_user_dev_update_status(dev);
> +			return;
> +		}
> +	} else if (status == VIRTIO_CONFIG_STATUS_RESET) {
>  		virtio_user_reset(hw);
> +	}
> 
>  	virtio_user_dev_set_status(dev, status);
>  }
> --
> 2.38.1

Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>