linux-kernel - Re: [PATCH] serial: imx: Avoid probe failure in case of missing gpiolib

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Message-ID: <20190801115046.lf66umgfj2xk6eqv@pengutronix.de>
Date:   Thu, 1 Aug 2019 13:50:46 +0200
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Schrempf Frieder <frieder.schrempf@...tron.de>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        Jiri Slaby <jslaby@...e.com>
Subject: Re: [PATCH] serial: imx: Avoid probe failure in case of missing
 gpiolib

Hello,

On Thu, Aug 01, 2019 at 10:59:54AM +0000, Schrempf Frieder wrote:
> So I would rather go with a variation of your second proposal and keep 
> the dummy implementation, but let it return NULL instead of an error 
> pointer, as all the mctrl_gpio_*() functions already seem to have a 
> check for gpios == NULL.
> 
> What do you think?

I'll gladly review a patch.

Best regads
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |