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

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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@xxxxxxxxxx>
> ---
>  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(-)
> 
[snip]
> diff --git a/drivers/firmware/arm_scmi/virtio.c b/drivers/firmware/arm_scmi/virtio.c
> index 11e8efb71375..6b8d93fe8848 100644
> --- a/drivers/firmware/arm_scmi/virtio.c
> +++ b/drivers/firmware/arm_scmi/virtio.c
> @@ -452,7 +452,7 @@ static void scmi_vio_remove(struct virtio_device *vdev)
>  	 * outstanding message on any vqueue to be ignored by complete_cb: now
>  	 * we can just stop processing buffers and destroy the vqueues.
>  	 */
> -	vdev->config->reset(vdev);
> +	virtio_reset_device(vdev);
>  	vdev->config->del_vqs(vdev);
>  	/* Ensure scmi_vdev is visible as NULL */
>  	smp_store_mb(scmi_vdev, NULL);


Reviewed-by: Cristian Marussi <cristian.marussi@xxxxxxx>

Thanks,
Cristian




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