Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.36 as permitted sender) client-ip=23.128.96.36;
Date:   Wed, 13 Dec 2023 20:48:55 +0200
From:   Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To:     Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= 
        <u.kleine-koenig@pengutronix.de>
Cc:     Nikita Shubin <nikita.shubin@maquefel.me>,
        Hartley Sweeten <hsweeten@visionengravers.com>,
        Alexander Sverdlin <alexander.sverdlin@gmail.com>,
        Russell King <linux@armlinux.org.uk>,
        Sergey Shtylyov <s.shtylyov@omp.ru>,
        Damien Le Moal <dlemoal@kernel.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-ide@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH v6 36/40] ata: pata_ep93xx: remove legacy pinctrl use
Message-ID: <ZXn8lzb953iDiM_m@smile.fi.intel.com>
References: <20231212-ep93xx-v6-0-c307b8ac9aa8@maquefel.me>
 <20231212-ep93xx-v6-36-c307b8ac9aa8@maquefel.me>
 <ZXn0-pHxIztvRFLK@smile.fi.intel.com>
 <20231213183349.hdjoxxszrrc4hqrg@pengutronix.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <20231213183349.hdjoxxszrrc4hqrg@pengutronix.de>
Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo
Precedence: bulk

On Wed, Dec 13, 2023 at 07:33:49PM +0100, Uwe Kleine-K?nig wrote:
> On Wed, Dec 13, 2023 at 08:16:26PM +0200, Andy Shevchenko wrote:
> > On Tue, Dec 12, 2023 at 11:20:53AM +0300, Nikita Shubin wrote:
> > > Drop legacy acquire/release since we are using pinctrl for this now.

...

> > > -	if (IS_ERR(drv_data->dma_rx_channel)) {
> > > +	if (PTR_ERR_OR_ZERO(drv_data->dma_rx_channel)) {
> > 
> > This seems incorrect.
> > 
> > >  		ret = PTR_ERR(drv_data->dma_rx_channel);
> > >  		return dev_err_probe(dev, ret, "rx DMA setup failed");
> > 
> > 		return dev_err_probe(...);
> > 
> > >  	}
> > 
> > I think you wanted
> > 
> > 	ret = PTR_ERR_OR_ZERO(drv_data->dma_rx_channel);
> > 	if (ret)
> > 		return dev_err_probe(dev, ret, "rx DMA setup failed");
> 
> How is that different from
> 
> 	if (IS_ERR(drv_data->dma_rx_channel))
> 		return dev_err_probe(dev, PTR_ERR(drv_data->dma_rx_channel), "....");
> 
> (which seems to be more idiomatic to me)? While I was involved in
> creating PTR_ERR_OR_ZERO, I don't particularily like it (today).

Makes lines shorter, either works for me.

> Also note that you want a \n at the end of error messages.

Indeed.

-- 
With Best Regards,
Andy Shevchenko