APPLIED [OEM-5.6] Re: [SRU] [Unstable/OEM-5.6] [PATCH 0/1] Fix non-working USB devices plugged during system sleep

Timo Aaltonen tjaalton at ubuntu.com
Mon Aug 24 08:09:06 UTC 2020


On 24.8.2020 9.36, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1892678
> 
> [Impact]
> Some USB devices aren't working if they are plugged under system sleep.
> 
> [Fix]
> Consider xHCI PORTSC CAS bit over other conditions.
> 
> [Test]
> Plug or re-plug USB devices during system sleep. USB devices always work
> after system resume.
> 
> [Regression Potential]
> There could be devices that depends on the old (but wrong) behavior.
> However it's really unlikely and it's against xHCI spec, we can deal
> with those quirky devices if any.
> 
> Kai-Heng Feng (1):
>   xhci: Do warm-reset when both CAS and XDEV_RESUME are set
> 
>  drivers/usb/host/xhci-hub.c | 19 ++++++++++---------
>  1 file changed, 10 insertions(+), 9 deletions(-)
> 

applied to oem-5.6, thanks

-- 
t



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