linux-kernel - Re: [PATCH 0/2] UCSI race condition resulting in wrong port state

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Date:   Sat, 21 Aug 2021 08:31:45 +0200
From:   Salvatore Bonaccorso <carnil@...ian.org>
To:     Ian Turner <vectro@...tro.org>
Cc:     Benjamin Berg <benjamin@...solutions.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>,
        linux-kernel@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Subject: Re: [PATCH 0/2] UCSI race condition resulting in wrong port state

Hi Ian,

On Fri, Aug 20, 2021 at 07:08:57PM -0400, Ian Turner wrote:
> On 8/20/21 9:29 AM, Benjamin Berg wrote:
> > On Fri, 2021-08-20 at 15:01 +0200, Salvatore Bonaccorso wrote:
> > > At least one user in Debian (https://bugs.debian.org/992004) would be
> > > happy to have those backported as well to the 5.10.y series (which we
> > > will pick up).
> > > 
> > > So if Benjamin ack's this, this would be great to have in 5.10.y.
> > Sure, it is reasonable to pull it into 5.10. At the time it just seemed
> > to me that it was enough of a corner case to not bother.
> > 
> > Note that there was a somewhat related fix later on (for Qualcomm UCSI
> > firmware), which probably makes sense to pull in too then.
> > 
> > Including Bjorn into the CC list for that.
> > 
> > commit 8c9b3caab3ac26db1da00b8117901640c55a69dd
> > Author: Bjorn Andersson <bjorn.andersson@...aro.org>
> > Date:   Sat May 15 21:09:53 2021 -0700
> > 
> >      usb: typec: ucsi: Clear pending after acking connector change
> > Benjamin
> 
> I feel that I should mention that I haven't actually tested this change, so
> it's just conjecture on my part that it would fix my issue (though it does
> seem to track pretty closely). I am happy to do that testing if it would
> save others time.

Ah apologies, I was under the impression that you confirmed that this
was already the right fix. It is pretty close to what you describe, so
if you can additionally confirm the fix, that would be great.

Regards,
Salvatore