# Re: \[PATCH 1/1\] virtio/s390: fix vritio-ccw device teardown

- From: Halil Pasic \<pasic@linux.ibm.com\>
- Date: 2021-09-15 22:00:54 
- List: virtualization
- Page: https://ratatoskr.run/virtualization/2021/09/1509848
- Thread: https://ratatoskr.run/linux-s390/2021/09/1509846/t.md

```text
s/vritio/virtio/
(subject)

[..]

On Wed, 15 Sep 2021 23:57:42 +0200
Halil Pasic [ref] wrote:

> Since commit 48720ba56891 ("virtio/s390: use DMA memory for ccw I/O and
> classic notifiers") we were supposed to make sure that
> virtio_ccw_release_dev() completes before the ccw device, and the
> attached dma pool are torn down, but unfortunately we did not.
> Before that commit it used to be OK to delay cleaning up the memory
> allocated by virtio-ccw indefinitely (which isn't really intuitive for
> guys used to destruction happens in reverse construction order).
> 

[..]
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