linux-kernel - Re: [REGRESSION] usb: gadget: f_fs: Allow scatter-gather buffers

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Message-ID: <CALAqxLXJE0POEYRJ1qwZurD2RMYmJsP7g5PnPNZ1Kab1ZRW1_w@mail.gmail.com>
Date:   Wed, 8 May 2019 14:39:20 -0700
From:   John Stultz <john.stultz@...aro.org>
To:     Andrzej Pietrasiewicz <andrzejtp2010@...il.com>
Cc:     Felipe Balbi <balbi@...nel.org>, "Yang, Fei" <fei.yang@...el.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Chen Yu <chenyu56@...wei.com>,
        lkml <linux-kernel@...r.kernel.org>,
        Linux USB List <linux-usb@...r.kernel.org>,
        Amit Pundir <amit.pundir@...aro.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [REGRESSION] usb: gadget: f_fs: Allow scatter-gather buffers

On Wed, May 8, 2019 at 12:01 AM Andrzej Pietrasiewicz
<andrzejtp2010@...il.com> wrote:
> W dniu 08.05.2019 o 04:18, John Stultz pisze:
> > Andrzej: Do you have any ideas or suggestions on this? I'm happy to
> > test or run any debug patches, if it would help narrow the issue down.
> >
>
> There is a patch:
>
> https://www.spinics.net/lists/linux-usb/msg178536.html
> https://www.spinics.net/lists/linux-usb/msg179653.html
>
> which fixes a subtle bug, but hasn't been applied yet.
>
> Can you please try it?

I'll give those a whirl, but those both look to be dwc2 specific. I'm
also seeing trouble w/ dwc3 based devices.

thanks
-john