APPLIED[F/Unstable]: [SRU] [E/F/Unstable/OEM-OSP1-B] [PATCH 0/4] Make Dell WD19 dock more reliable after suspend

Seth Forshee seth.forshee at
Sat Mar 21 00:53:44 UTC 2020

On Fri, Mar 20, 2020 at 03:39:33PM +0800, Kai-Heng Feng wrote:
> BugLink:
> [Impact]
> When Dell WD19 dock connects multiple USB3 storage devices, the USB Hub
> used internally may stop working after suspend.
> [Fix]
> Disable LPM on the Realtek USB Hub, and let xHCI controller make sure
> the link state transition is completed.
> [Test]
> After applying the patches, the Dell WD19 works reliably after thousand
> times for suspend/resume cycle.
> [Regression Potential]
> Low. This replaces the currently "msleep" way with more robust
> mechanism. I also test other systems and nothing breaks.

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

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