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Date:   Wed, 22 Jun 2022 20:04:54 +0300
From:   Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To:     Lino Sanfilippo <LinoSanfilippo@gmx.de>
Cc:     gregkh@linuxfoundation.org, jirislaby@kernel.org,
        ilpo.jarvinen@linux.intel.com, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, vz@mleia.com,
        linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
        linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
        lukas@wunner.de, p.rosenberger@kunbus.com,
        Lino Sanfilippo <l.sanfilippo@kunbus.com>
Subject: Re: [PATCH 1/8] serial: core: only get RS485 termination gpio if
 supported
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References: <20220622154659.8710-1-LinoSanfilippo@gmx.de>
 <20220622154659.8710-2-LinoSanfilippo@gmx.de>
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On Wed, Jun 22, 2022 at 05:46:52PM +0200, Lino Sanfilippo wrote:
> From: Lino Sanfilippo <l.sanfilippo@kunbus.com>
> 
> In uart_get_rs485_mode() only try to get a termination GPIO if RS485 bus
> termination is supported by the driver.

I'm not sure I got the usefulness of this change.
We request GPIO line as optional, so if one is defined it in the DT/ACPI, then
they probably want to (opportunistically) have it.

The certain driver may or may not utilize this GPIO.

With your change it's possible to have a DTS where GPIO line defined in a
broken way and user won't ever know about it, if they are using platforms
without termination support.

-- 
With Best Regards,
Andy Shevchenko