Re: [PATCH 1/8] virtio: mmio: Fix private data lookup when deleting queues

[Kuan-Wei Chiu <visitorckw@gmail.com>]

On Thu, Oct 15, 2026 at 07:13:16PM +0800, Bin Meng wrote:
> The virtqueue's vdev points to the functional device, while the MMIO
> register base and version are stored in its parent transport device.
> Using the child's private data can make queue deletion write to queue
> memory instead of MMIO registers.
> 
> Get the parent device's private data in virtio_mmio_del_vq().
> 
> Fixes: fdc4aca89ecb ("virtio: Add virtio over mmio transport driver")
> Signed-off-by: Bin Meng <bin.meng@processmission.com>

Reviewed-by: Kuan-Wei Chiu <visitorckw@gmail.com>

Regards,
Kuan-Wei

> ---
> 
>  drivers/virtio/virtio_mmio.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
> index 975f98cd9e5..4b478639fb7 100644
> --- a/drivers/virtio/virtio_mmio.c
> +++ b/drivers/virtio/virtio_mmio.c
> @@ -279,7 +279,7 @@ error_available:
>  
>  static void virtio_mmio_del_vq(struct virtqueue *vq)
>  {
> -	struct virtio_mmio_priv *priv = dev_get_priv(vq->vdev);
> +	struct virtio_mmio_priv *priv = dev_get_priv(vq->vdev->parent);
>  	unsigned int index = vq->index;
>  
>  	/* Select and deactivate the queue */
> -- 
> 2.53.0
>