[PATCH 0/1][SRU][Focal/OEM-5.6/Groovy]Fix AMD usb host controller lost after stress S3

[Stefan Bader]

On 03.09.20 08:35, Aaron Ma wrote:
> BugLink: https://bugs.launchpad.net/bugs/1893914
> 
> [Impact]
> When stress S3 on AMD 0x15e5 usb host controller, it failed to resume.
> The controller indicates "internal Host Controller Error"
> 
> [Fix]
> To fix this, sparse controller enable bit has to be disabled.
> 
> [Test Case]
> Verified on the target platform, OK for 100 times of S3.
> 
> [Regression Potential]
> Low,
> Add specific ID quirk for hw, no other hw related, tested with positive
> results.
> Backported is due to minimal context difference on Focal/OEM-5.6
> kernels.
> 
> Nehal Bakulchandra Shah (1):
>   UBUNTU: SAUCE: xhci: workaround for S3 issue on AMD SNPS 3.0 xHC
> 
>  drivers/usb/host/xhci-pci.c | 12 ++++++++++++
>  drivers/usb/host/xhci.h     |  1 +
>  2 files changed, 13 insertions(+)
> 
I won't be looking until the bug report has at least status set sensible for the
tasks.

-Stefan

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