Re: xhci problem -> general protection fault

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On Mon, Oct 12, 2020 at 10:20:31PM +0300, Mathias Nyman wrote:
> On 1.10.2020 19.43, zwisler@xxxxxxxxxx wrote:
> > On Tue, Sep 29, 2020 at 01:35:31AM +0300, Mathias Nyman wrote:

> I'm rewriting how xhci driver handles halted and canceled transfers.
> While looking into it I found an older case where hardware gives bad data 
> in the output context. This was 10 years ago and on some specic hardware,
> see commit:
> 
> ac9d8fe7c6a8 USB: xhci: Add quirk for Fresco Logic xHCI hardware.
> 
> > 
> > I'm happy to gather logs with more debug or run other experiments, if that
> > would be helpful.  As it is I don't really know how to debug the internal
> > state of the HC further, but hopefully the knowledge that the patch below
> > makes a difference will help us move forward.
> 
> Great thanks, it will take some time before rewrite is ready.

Should we/I invest time in trying to create a quirk similar to

> ac9d8fe7c6a8 USB: xhci: Add quirk for Fresco Logic xHCI hardware.

in the mean time, or should we just wait for your rewrite?



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