Re: [PATCH RFC] virtio: wrap config->reset calls

From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: "Michael S. Tsirkin" <mst@redhat.com>
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Subject: Re: [PATCH RFC] virtio: wrap config->reset calls
Date: Wed, 13 Oct 2021 09:46:04 -0600	[thread overview]
Message-ID: <20211013154604.GB4135908@p14s> (raw)
In-Reply-To: <20211013105226.20225-1-mst@redhat.com>

On Wed, Oct 13, 2021 at 06:55:31AM -0400, Michael S. Tsirkin wrote:
> This will enable cleanups down the road.
> The idea is to disable cbs, then add "flush_queued_cbs" callback
> as a parameter, this way drivers can flush any work
> queued after callbacks have been disabled.
> 
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> ---
>  arch/um/drivers/virt-pci.c                 | 2 +-
>  drivers/block/virtio_blk.c                 | 4 ++--
>  drivers/bluetooth/virtio_bt.c              | 2 +-
>  drivers/char/hw_random/virtio-rng.c        | 2 +-
>  drivers/char/virtio_console.c              | 4 ++--
>  drivers/crypto/virtio/virtio_crypto_core.c | 8 ++++----
>  drivers/firmware/arm_scmi/virtio.c         | 2 +-
>  drivers/gpio/gpio-virtio.c                 | 2 +-
>  drivers/gpu/drm/virtio/virtgpu_kms.c       | 2 +-
>  drivers/i2c/busses/i2c-virtio.c            | 2 +-
>  drivers/iommu/virtio-iommu.c               | 2 +-
>  drivers/net/caif/caif_virtio.c             | 2 +-
>  drivers/net/virtio_net.c                   | 4 ++--
>  drivers/net/wireless/mac80211_hwsim.c      | 2 +-
>  drivers/nvdimm/virtio_pmem.c               | 2 +-
>  drivers/rpmsg/virtio_rpmsg_bus.c           | 2 +-
>  drivers/scsi/virtio_scsi.c                 | 2 +-
>  drivers/virtio/virtio.c                    | 5 +++++
>  drivers/virtio/virtio_balloon.c            | 2 +-
>  drivers/virtio/virtio_input.c              | 2 +-
>  drivers/virtio/virtio_mem.c                | 2 +-
>  fs/fuse/virtio_fs.c                        | 4 ++--
>  include/linux/virtio.h                     | 1 +
>  net/9p/trans_virtio.c                      | 2 +-
>  net/vmw_vsock/virtio_transport.c           | 4 ++--
>  sound/virtio/virtio_card.c                 | 4 ++--
>  26 files changed, 39 insertions(+), 33 deletions(-)
> 
>  static struct virtio_driver virtio_pmem_driver = {
> diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c
> index 8e49a3bacfc7..6a11952822df 100644
> --- a/drivers/rpmsg/virtio_rpmsg_bus.c
> +++ b/drivers/rpmsg/virtio_rpmsg_bus.c
> @@ -1015,7 +1015,7 @@ static void rpmsg_remove(struct virtio_device *vdev)
>  	size_t total_buf_space = vrp->num_bufs * vrp->buf_size;
>  	int ret;
>  
> -	vdev->config->reset(vdev);
> +	virtio_reset_device(vdev);
> 

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

>  	ret = device_for_each_child(&vdev->dev, NULL, rpmsg_remove_device);
>  	if (ret)