APPLIED [OEM-5.14/OEM-5.17] Re: [SRU] [J/Unstable/OEM-5.15/OEM-5.17] [PATCH 0/2] Power cycle USB ports on shutdown/reboot

[Timo Aaltonen]

Kai-Heng Feng kirjoitti 1.6.2022 klo 16.02:
> BugLink: https://bugs.launchpad.net/bugs/1976503
> 
> [Impact]
> USB storage can be stuck in USB reset loop after reboot. More reboots
> don't help the situation, unless it's re-plugged.
> 
> [Fix]
> Power cycle USB ports on system shutdown/reboot.
> 
> [Test]
> The USB storage survived 300 times of reboots, and it works under each
> reboot cycle.
> 
> [Where problems could occur]
> One potential problem I can think of is S5 WoL over USB ethernet. Since
> the port power and its associated ACPI power are turned off, WoL may
> stop working, if WoL over USB is a thing.
> 
> Henry Lin (1):
>    xhci: stop polling roothubs after shutdown
> 
> Mathias Nyman (1):
>    UBUNTU: SAUCE: xhci: turn off port power in shutdown
> 
>   drivers/usb/host/xhci-hub.c |  2 +-
>   drivers/usb/host/xhci.c     | 25 +++++++++++++++++++++++--
>   drivers/usb/host/xhci.h     |  2 ++
>   3 files changed, 26 insertions(+), 3 deletions(-)
> 

applied to oem-kernels, thanks

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