linux-kernel - Re: [PATCH 2/4] platform/chrome: cros_ec

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Date:   Tue, 23 Aug 2022 10:14:14 -0700
From:   Prashant Malani <pmalani@...omium.org>
To:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, chrome-platform@...ts.linux.dev,
        bleung@...omium.org,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>
Subject: Re: [PATCH 2/4] platform/chrome: cros_ec_typec: Correct alt mode index

Hi Heikki,

Thanks for the review.

On Tue, Aug 23, 2022 at 1:14 AM Heikki Krogerus
<heikki.krogerus@...ux.intel.com> wrote:
>
> Hi,
>
> On Fri, Aug 19, 2022 at 07:08:03PM +0000, Prashant Malani wrote:
> > Alt mode indices used by USB PD (Power Delivery) start with 1, not 0.
> >
> > Update the alt mdoe registration code to factor this in to the alt mode
> > descriptor.
> >
> > Fixes: de0f49487db3 ("platform/chrome: cros_ec_typec: Register partner altmodes")
> > Signed-off-by: Prashant Malani <pmalani@...omium.org>
>
> Shouldn't this be applied also to the stable kernels?

We're not planning on backporting alt mode driver stuff to older
kernels, so probably not necessary
(aside from where it gets auto-magically picked).
Userspace currently doesn't use the mode index for anything.

Please LMK if you still feel it should go to stable.

>
> Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
>