Re: [PATCH] usb: xhci: Fix incomplete PM resume operation due to XHCI commmand timeout

[Mathias Nyman]

On 01.04.2016 06:55, Rajesh Bhagat wrote:

> > > Please share your opinion on other changes for patch submission as well as resume
> > time.
> > >
>
> > I think more effort should be put into investigating why this happens in the first place.
> > What is the root cause? why doesn't xhci start properly after resume in this case.
> Hello Mathias,
>
> I understand your point and would surely debug the root cause of the issue. But implementing the
> fallback mechanism in SW, if HW does not respond well seems to a better solution to me.

Yes, I'll add something like this, at least the xhci parts to make sure the completions are called.

This is not really a fallback, it's just a better burial for xhci. It will be unusable after this.

-Mathias