linux-kernel - Re: [PATCH v5 6/7] serial: omap: do not override settings for RS485 support

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Message-ID: <e59cf6e9-1f1d-4252-aee2-818fef9c9936@gmx.de>
Date:   Wed, 13 Dec 2023 23:55:31 +0100
From:   Lino Sanfilippo <LinoSanfilippo@....de>
To:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Lino Sanfilippo <l.sanfilippo@...bus.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        u.kleine-koenig@...gutronix.de, shawnguo@...nel.org,
        s.hauer@...gutronix.de, mcoquelin.stm32@...il.com,
        alexandre.torgue@...s.st.com, cniedermaier@...electronics.com,
        hugo@...ovil.com, LKML <linux-kernel@...r.kernel.org>,
        linux-serial <linux-serial@...r.kernel.org>,
        Lukas Wunner <lukas@...ner.de>, p.rosenberger@...bus.com,
        stable@...r.kernel.org
Subject: Re: [PATCH v5 6/7] serial: omap: do not override settings for RS485
 support



On 13.12.23 11:26, Ilpo Järvinen wrote:
> On Sat, 9 Dec 2023, Lino Sanfilippo wrote:
>
>> In serial_omap_rs485() RS485 support may be deactivated due to a missing
>
> There's no serial_omap_rs485() function. I assume/know you meant
> serial_omap_probe_rs485() but please correct.
>

Right, I meant serial_omap_probe_rs485(). Will fix the misnaming as well as
the typos below.

>> RTS GPIO. This is done by nullifying the ports rs485_supported struct.
>> After that however the serial_omap_rs485_supported struct is assigned to
>> the same structure unconditionally, which results in an unintended
>> reactivation of RS485 support.
>>
>> Fix this by callling serial_omap_rs485() after the assignment of
>
> callling -> calling.
>
> Again, the function name is incorrect.
>

>> rs485_supported.
>
> Wouldn't it be better if all rs485 init/setups would occur in the same
> place rather than being spread around? That is, move the rs485_config and
> rs485_supported setup into serial_omap_probe_rs485()?
>

No problem, I can do that. Thanks for the review(s)!

Regards,
Lino