APPLIED[F/Unstable]: [SRU] [B/D/E/Unstable/OEM-B/OEM-OSP1-B] [PATCH 0/2] Fix unusable USB hub on Dell TB16 after S3

Seth Forshee seth.forshee at
Mon Dec 16 19:35:30 UTC 2019

On Fri, Dec 06, 2019 at 01:05:25AM +0800, Kai-Heng Feng wrote:
> BugLink:
> [Impact]
> Sometimes USB hub on Dell TB16 stop working after S3.
> [Fix]
> Attempt to power cycle USB device when a it's stuck at eSS.Disabled
> state, it's basically not recoverable. 
> [Test]
> After applying the patch, USB ports and USB ethernet are still working
> after 100 times S3 stress test.
> [Regression Potential]
> Low. This is a last resort attempt, in most cases this code path won't
> be reached.

Applied to focal/master-next and unstable/master, thanks!

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