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Sat, 15 May 2021 19:48:00 +0000 Date: Sat, 15 May 2021 21:47:57 +0200 From: Thorsten Scherer To: Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= Cc: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de Subject: Re: [PATCH] siox: Simplify error handling via dev_err_probe() Message-ID: <20210515194757.fgknanqjhtbl7ydh@ws067.eckelmann.group> References: <20210515082017.1127580-1-t.scherer@eckelmann.de> <20210515180047.mmwhm4wajf6dr4kt@pengutronix.de> Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20210515180047.mmwhm4wajf6dr4kt@pengutronix.de> X-Originating-IP: [2a00:1f08:400:4::2] X-ClientProxiedBy: PR3P189CA0085.EURP189.PROD.OUTLOOK.COM (2603:10a6:102:b4::30) To AM9P189MB1700.EURP189.PROD.OUTLOOK.COM (2603:10a6:20b:2fc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from ws067.eckelmann.group (2a00:1f08:400:4::2) by PR3P189CA0085.EURP189.PROD.OUTLOOK.COM (2603:10a6:102:b4::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4108.32 via Frontend Transport; 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As you > used git-send-email this is probably a case for Eckelmann IT ... I will resend the patch as soon as the issues with our IT are solved. > On Sat, May 15, 2021 at 10:20:17AM +0200, Thorsten Scherer wrote: > > a787e5400a1c ("driver core: add device probe log helper") introduced a > > helper for a common error checking pattern. Use it. > > Please test your patch using scripts/checkpatch and fix the issued > errors (or argument why you chose not to follow its recommendations). I will fix this. > > Signed-off-by: Thorsten Scherer > > --- > > drivers/siox/siox-bus-gpio.c | 19 ++++++++++--------- > > 1 file changed, 10 insertions(+), 9 deletions(-) > > > > diff --git a/drivers/siox/siox-bus-gpio.c b/drivers/siox/siox-bus-gpio.c > > index 46b4cda36bac..aeefeb725524 100644 > > --- a/drivers/siox/siox-bus-gpio.c > > +++ b/drivers/siox/siox-bus-gpio.c > > @@ -102,29 +102,29 @@ static int siox_gpio_probe(struct platform_device *pdev) > > > > ddata->din = devm_gpiod_get(dev, "din", GPIOD_IN); > > if (IS_ERR(ddata->din)) { > > - ret = PTR_ERR(ddata->din); > > - dev_err(dev, "Failed to get %s GPIO: %d\n", "din", ret); > > + ret = dev_err_probe(dev, PTR_ERR(ddata->din), > > + "Failed to get din GPIO\n"); > > Huh, I'm surprised. I did > > diff --git a/drivers/siox/siox-bus-gpio.c b/drivers/siox/siox-bus-gpio.c > index aeefeb725524..b97fde71a6a0 100644 > --- a/drivers/siox/siox-bus-gpio.c > +++ b/drivers/siox/siox-bus-gpio.c > @@ -103,28 +103,28 @@ static int siox_gpio_probe(struct platform_device *pdev) > ddata->din = devm_gpiod_get(dev, "din", GPIOD_IN); > if (IS_ERR(ddata->din)) { > ret = dev_err_probe(dev, PTR_ERR(ddata->din), > - "Failed to get din GPIO\n"); > + "Failed to get %s GPIO\n", "din"); > goto err; > } > > ddata->dout = devm_gpiod_get(dev, "dout", GPIOD_OUT_LOW); > if (IS_ERR(ddata->dout)) { > ret = dev_err_probe(dev, PTR_ERR(ddata->dout), > - "Failed to get dout GPIO\n"); > + "Failed to get %s GPIO\n", "dout"); > goto err; > } > > ddata->dclk = devm_gpiod_get(dev, "dclk", GPIOD_OUT_LOW); > if (IS_ERR(ddata->dclk)) { > ret = dev_err_probe(dev, PTR_ERR(ddata->dclk), > - "Failed to get dclk GPIO\n"); > + "Failed to get %s GPIO\n", "dclk"); > goto err; > } > > ddata->dld = devm_gpiod_get(dev, "dld", GPIOD_OUT_LOW); > if (IS_ERR(ddata->dld)) { > ret = dev_err_probe(dev, PTR_ERR(ddata->dld), > - "Failed to get dld GPIO\n"); > + "Failed to get %s GPIO\n", "dld"); > goto err; > } > > on top of your patch and the binary size increased (using ARCH=arm and > gcc 7.3.1). So no objection from me to get rid of this idiom. > > > goto err; > > } > > > > ddata->dout = devm_gpiod_get(dev, "dout", GPIOD_OUT_LOW); > > if (IS_ERR(ddata->dout)) { > > - ret = PTR_ERR(ddata->dout); > > - dev_err(dev, "Failed to get %s GPIO: %d\n", "dout", ret); > > + ret = dev_err_probe(dev, PTR_ERR(ddata->dout), > > + "Failed to get dout GPIO\n"); > > goto err; > > } > > > > ddata->dclk = devm_gpiod_get(dev, "dclk", GPIOD_OUT_LOW); > > if (IS_ERR(ddata->dclk)) { > > - ret = PTR_ERR(ddata->dclk); > > - dev_err(dev, "Failed to get %s GPIO: %d\n", "dclk", ret); > > + ret = dev_err_probe(dev, PTR_ERR(ddata->dclk), > > + "Failed to get dclk GPIO\n"); > > goto err; > > } > > > > ddata->dld = devm_gpiod_get(dev, "dld", GPIOD_OUT_LOW); > > if (IS_ERR(ddata->dld)) { > > - ret = PTR_ERR(ddata->dld); > > - dev_err(dev, "Failed to get %s GPIO: %d\n", "dld", ret); > > + ret = dev_err_probe(dev, PTR_ERR(ddata->dld), > > + "Failed to get dld GPIO\n"); > > goto err; > > } > > > > @@ -134,7 +134,8 @@ static int siox_gpio_probe(struct platform_device *pdev) > > > > ret = siox_master_register(smaster); > > if (ret) { > > - dev_err(dev, "Failed to register siox master: %d\n", ret); > > + dev_err_probe(dev, ret, > > + "Failed to register siox master\n"); > > err: > > siox_master_put(smaster); > > } > > -- > > 2.29.2 > > > > Eckelmann AG > > Vorstand: Dipl.-Ing. Peter Frankenbach (Sprecher) Dipl.-Wi.-Ing. Philipp Eckelmann > > Dr.-Ing. Marco M?nchhof > > Another issue for your IT department: Tell them please to not append > latin1 encoded footers to mails that don't declare an encoding (and so > are implicitly ASCII only). Will do so. > I didn't check but I assume this will earn > you a few spam assassin points ... Thank you for pointing things out. > Best regards > Uwe > > -- > Pengutronix e.K. | Uwe Kleine-König | > Industrial Linux Solutions | https://www.pengutronix.de/ | Best regards Thorsten -- Thorsten Scherer | Eckelmann AG | www.eckelmann.de |