Bug#1050352: backside USB-ports stop working after some time

[Rolf Reintjes <lists.rolf@reintjes.nrw>]

I am on testing.

On 28.08.23 10:35, Rolf Reintjes wrote:
> I compiled and installed a kernel with
>
> https://github.com/torvalds/linux/blob/master/drivers/iommu/intel/iommu.c
>
> In this file I had to comment out:
>
> /* case IOMMU_CAP_DEFERRED_FLUSH:  */
>
> With this self compiled kernel the problem is not there.

This file was from 6.5.

Now I took this one:

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/iommu/intel/iommu.c?h=v6.4.11

and compiled and installed the kernel. The problem did not occur. The 
debian patches were not applied here for my test.

> I guess that iommu.c patches in
>
> https://sources.debian.org/patches/linux/6.4.11-1/
>
> cause the problems I discovered.

I would appreciate further advice and guidance.