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From: zwisler@google.com
To: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: Andrzej Pietrasiewicz <andrzej.p@collabora.com>,
	"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
	"kernel@collabora.com" <kernel@collabora.com>
Subject: Re: xhci problem -> general protection fault
Date: Mon, 12 Oct 2020 15:53:48 -0600
Message-ID: <20201012215348.GA3324220@google.com> (raw)
In-Reply-To: <69f8cbc3-0ae7-cfb2-2fdd-556ada77381f@linux.intel.com>

On Mon, Oct 12, 2020 at 10:20:31PM +0300, Mathias Nyman wrote:
> On 1.10.2020 19.43, zwisler@google.com 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?

  reply index

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-17 15:30 Andrzej Pietrasiewicz
2020-09-18 10:50 ` Mathias Nyman
2020-09-18 14:20   ` Andrzej Pietrasiewicz
2020-09-25 13:40     ` Mathias Nyman
2020-09-25 21:05       ` Ross Zwisler
2020-09-28 13:32         ` Andrzej Pietrasiewicz
2020-09-29  7:13           ` Mathias Nyman
2020-10-01 14:13             ` Andrzej Pietrasiewicz
2020-09-28 22:35         ` Mathias Nyman
2020-10-01 16:43           ` zwisler
2020-10-12 19:20             ` Mathias Nyman
2020-10-12 21:53               ` zwisler [this message]
2020-10-13  7:49                 ` Mathias Nyman
2020-10-13  8:29                   ` Andrzej Pietrasiewicz
2020-10-13 16:44                     ` zwisler
2020-11-19 16:52                   ` Ross Zwisler
2020-11-23 15:06                     ` Mathias Nyman
2020-12-02 22:59                       ` Ross Zwisler
2020-12-04 18:07                         ` Mathias Nyman
2020-12-08 17:24                           ` Ross Zwisler
2020-12-09 13:11                             ` Mathias Nyman
2020-12-09 18:54                               ` Ross Zwisler
2020-12-30 12:33                                 ` Mathias Nyman
2021-01-06 18:52                                   ` Ross Zwisler
2021-01-07  8:57                                     ` Mathias Nyman
2021-01-07 16:07                                       ` Ross Zwisler

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