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

From: Mathias Nyman
Date: Fri Apr 01 2016 - 06:43:30 EST


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