linux-kernel - Re: [PATCH v9 08/10] serial: sc16is7xx: add call to get rs485 DT flags and properties

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Message-Id: <20230803103814.ec35dbddad880a77565ff681@hugovil.com>
Date:   Thu, 3 Aug 2023 10:38:14 -0400
From:   Hugo Villeneuve <hugo@...ovil.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, jirislaby@...nel.org, jringle@...dpoint.com,
        isaac.true@...onical.com, jesse.sung@...onical.com,
        l.perczak@...lintechnologies.com, tomasz.mon@...lingroup.com,
        linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        Hugo Villeneuve <hvilleneuve@...onoff.com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Lech Perczak <lech.perczak@...lingroup.com>
Subject: Re: [PATCH v9 08/10] serial: sc16is7xx: add call to get rs485 DT
 flags and properties

On Mon, 31 Jul 2023 17:59:14 +0200
Greg KH <gregkh@...uxfoundation.org> wrote:

> On Tue, Jul 25, 2023 at 10:23:40AM -0400, Hugo Villeneuve wrote:
> > From: Hugo Villeneuve <hvilleneuve@...onoff.com>
> > 
> > Add call to uart_get_rs485_mode() to probe for RS485 flags and
> > properties from device tree.
> 
> Again, you are saying what you are doing, but not why.  I have no hint
> as to if this is a bugfix, or a new features, or something else?
> 
> thanks,
> 
> greg k-h

Hi Greg,
I could change the commit message to:

---------
serial: sc16is7xx: add missing support for rs485 devicetree properties

Retrieve rs485 devicetree properties on registration of sc16is7xx ports
in case they are attached to an rs485 transceiver.
---------

I don't think that it should be considered as a bug fix, but maybe as a
missing feature.

And does it mean that it should also go to older (stable) kernels then?
If yes, then do I need to add the "Fixes" tag?

Thank you,
Hugo.