From patchwork Mon Jun 22 15:13:15 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Carpenter X-Patchwork-Id: 6656671 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id BC5E7C05AC for ; Mon, 22 Jun 2015 15:16:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B5B04205D4 for ; Mon, 22 Jun 2015 15:16:34 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A9752203C1 for ; Mon, 22 Jun 2015 15:16:33 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Z73QN-00071E-6h; Mon, 22 Jun 2015 15:14:15 +0000 Received: from aserp1040.oracle.com ([141.146.126.69]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Z73QH-0006qk-80 for linux-arm-kernel@lists.infradead.org; Mon, 22 Jun 2015 15:14:10 +0000 Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t5MFDeOq008184 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 22 Jun 2015 15:13:41 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by userv0021.oracle.com (8.13.8/8.13.8) with ESMTP id t5MFDeOX023675 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Mon, 22 Jun 2015 15:13:40 GMT Received: from abhmp0005.oracle.com (abhmp0005.oracle.com [141.146.116.11]) by userv0121.oracle.com (8.13.8/8.13.8) with ESMTP id t5MFDd4X017077; Mon, 22 Jun 2015 15:13:39 GMT Received: from mwanda (/154.0.139.178) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 22 Jun 2015 08:13:38 -0700 Date: Mon, 22 Jun 2015 18:13:15 +0300 From: Dan Carpenter To: Tomasz Figa Subject: [patch v2 2/2] pinctrl: samsung: remove "out of memory" messages Message-ID: <20150622151315.GB14156@mwanda> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20150619085203.GO28762@mwanda> User-Agent: Mutt/1.5.23 (2014-03-12) X-Source-IP: userv0021.oracle.com [156.151.31.71] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150622_081409_432229_65226A4F X-CRM114-Status: GOOD ( 15.71 ) X-Spam-Score: -5.6 (-----) Cc: Krzysztof Kozlowski , linux-samsung-soc@vger.kernel.org, Linus Walleij , kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, Kukjin Kim , Thomas Abraham , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Checkpatch.pl complains about these: WARNING: Possible unnecessary 'out of memory' message The messages use a little extra RAM and they add a few extra lines of code. We're probably never going to hit these out of memory situations but if we did then kmalloc() has pretty good error messages built-in. Signed-off-by: Dan Carpenter Reviewed-by: Krzysztof Kozlowski diff --git a/drivers/pinctrl/samsung/pinctrl-exynos5440.c b/drivers/pinctrl/samsung/pinctrl-exynos5440.c index fa84db6..5574b8a 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos5440.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos5440.c @@ -203,10 +203,8 @@ static int exynos5440_dt_node_to_map(struct pinctrl_dev *pctldev, /* Allocate memory for pin-map entries */ map = kzalloc(sizeof(*map) * map_cnt, GFP_KERNEL); - if (!map) { - dev_err(dev, "could not alloc memory for pin-maps\n"); + if (!map) return -ENOMEM; - } *nmaps = 0; /* @@ -214,10 +212,8 @@ static int exynos5440_dt_node_to_map(struct pinctrl_dev *pctldev, * from the node name from which these map entries are be created. */ gname = kasprintf(GFP_KERNEL, "%s%s", np->name, GROUP_SUFFIX); - if (!gname) { - dev_err(dev, "failed to alloc memory for group name\n"); + if (!gname) goto free_map; - } /* * don't have config options? then skip over to creating function @@ -228,10 +224,8 @@ static int exynos5440_dt_node_to_map(struct pinctrl_dev *pctldev, /* Allocate memory for config entries */ cfg = kzalloc(sizeof(*cfg) * cfg_cnt, GFP_KERNEL); - if (!cfg) { - dev_err(dev, "failed to alloc memory for configs\n"); + if (!cfg) goto free_gname; - } /* Prepare a list of config settings */ for (idx = 0, cfg_cnt = 0; idx < ARRAY_SIZE(pcfgs); idx++) { @@ -253,10 +247,8 @@ skip_cfgs: if (of_find_property(np, "samsung,exynos5440-pin-function", NULL)) { fname = kasprintf(GFP_KERNEL, "%s%s", np->name, FUNCTION_SUFFIX); - if (!fname) { - dev_err(dev, "failed to alloc memory for func name\n"); + if (!fname) goto free_cfg; - } map[*nmaps].data.mux.group = gname; map[*nmaps].data.mux.function = fname; @@ -647,10 +639,8 @@ static int exynos5440_pinctrl_parse_dt_pins(struct platform_device *pdev, } *pin_list = devm_kzalloc(dev, *npins * sizeof(**pin_list), GFP_KERNEL); - if (!*pin_list) { - dev_err(dev, "failed to allocate memory for pin list\n"); + if (!*pin_list) return -ENOMEM; - } return of_property_read_u32_array(cfg_np, "samsung,exynos5440-pins", *pin_list, *npins); @@ -678,17 +668,15 @@ static int exynos5440_pinctrl_parse_dt(struct platform_device *pdev, return -EINVAL; groups = devm_kzalloc(dev, grp_cnt * sizeof(*groups), GFP_KERNEL); - if (!groups) { - dev_err(dev, "failed allocate memory for ping group list\n"); + if (!groups) return -EINVAL; - } + grp = groups; functions = devm_kzalloc(dev, grp_cnt * sizeof(*functions), GFP_KERNEL); - if (!functions) { - dev_err(dev, "failed to allocate memory for function list\n"); + if (!functions) return -EINVAL; - } + func = functions; /* @@ -708,10 +696,8 @@ static int exynos5440_pinctrl_parse_dt(struct platform_device *pdev, /* derive pin group name from the node name */ gname = devm_kasprintf(dev, GFP_KERNEL, "%s%s", cfg_np->name, GROUP_SUFFIX); - if (!gname) { - dev_err(dev, "failed to alloc memory for group name\n"); + if (!gname) return -ENOMEM; - } grp->name = gname; grp->pins = pin_list; @@ -727,18 +713,13 @@ skip_to_pin_function: /* derive function name from the node name */ fname = devm_kasprintf(dev, GFP_KERNEL, "%s%s", cfg_np->name, FUNCTION_SUFFIX); - if (!fname) { - dev_err(dev, "failed to alloc memory for func name\n"); + if (!fname) return -ENOMEM; - } func->name = fname; func->groups = devm_kzalloc(dev, sizeof(char *), GFP_KERNEL); - if (!func->groups) { - dev_err(dev, "failed to alloc memory for group list " - "in pin function"); + if (!func->groups) return -ENOMEM; - } func->groups[0] = gname; func->num_groups = gname ? 1 : 0; func->function = function; @@ -766,10 +747,8 @@ static int exynos5440_pinctrl_register(struct platform_device *pdev, int pin, ret; ctrldesc = devm_kzalloc(dev, sizeof(*ctrldesc), GFP_KERNEL); - if (!ctrldesc) { - dev_err(dev, "could not allocate memory for pinctrl desc\n"); + if (!ctrldesc) return -ENOMEM; - } ctrldesc->name = "exynos5440-pinctrl"; ctrldesc->owner = THIS_MODULE; @@ -779,10 +758,8 @@ static int exynos5440_pinctrl_register(struct platform_device *pdev, pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) * EXYNOS5440_MAX_PINS, GFP_KERNEL); - if (!pindesc) { - dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n"); + if (!pindesc) return -ENOMEM; - } ctrldesc->pins = pindesc; ctrldesc->npins = EXYNOS5440_MAX_PINS; @@ -796,10 +773,8 @@ static int exynos5440_pinctrl_register(struct platform_device *pdev, */ pin_names = devm_kzalloc(&pdev->dev, sizeof(char) * PIN_NAME_LENGTH * ctrldesc->npins, GFP_KERNEL); - if (!pin_names) { - dev_err(&pdev->dev, "mem alloc for pin names failed\n"); + if (!pin_names) return -ENOMEM; - } /* for each pin, set the name of the pin */ for (pin = 0; pin < ctrldesc->npins; pin++) { @@ -836,10 +811,8 @@ static int exynos5440_gpiolib_register(struct platform_device *pdev, int ret; gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL); - if (!gc) { - dev_err(&pdev->dev, "mem alloc for gpio_chip failed\n"); + if (!gc) return -ENOMEM; - } priv->gc = gc; gc->base = 0; @@ -941,10 +914,8 @@ static int exynos5440_gpio_irq_init(struct platform_device *pdev, intd = devm_kzalloc(dev, sizeof(*intd) * EXYNOS5440_MAX_GPIO_INT, GFP_KERNEL); - if (!intd) { - dev_err(dev, "failed to allocate memory for gpio intr data\n"); + if (!intd) return -ENOMEM; - } for (i = 0; i < EXYNOS5440_MAX_GPIO_INT; i++) { irq = irq_of_parse_and_map(dev->of_node, i); @@ -987,10 +958,8 @@ static int exynos5440_pinctrl_probe(struct platform_device *pdev) } priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); - if (!priv) { - dev_err(dev, "could not allocate memory for private data\n"); + if (!priv) return -ENOMEM; - } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); priv->reg_base = devm_ioremap_resource(&pdev->dev, res);