From patchwork Wed Feb 15 13:42:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 654283 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 562CFC64ED9 for ; Wed, 15 Feb 2023 13:42:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229701AbjBONmN (ORCPT ); Wed, 15 Feb 2023 08:42:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60028 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229518AbjBONmL (ORCPT ); Wed, 15 Feb 2023 08:42:11 -0500 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A5E5834C1B; Wed, 15 Feb 2023 05:42:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1676468530; x=1708004530; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=OfvVPmKieXxT2rYuS54QMKMYJwHh1yFcw/O7wIHB3jw=; b=hBGkfLsmsnwREYANmtD4UxaiFjrsoKaW13ZpCrHpa8l7BZuWr84p9ili ypOAvDI6TDWDSjs5yTTXKXyFrVZQ8NnE7Na/up456fd9IeNhFYTdT+SUT TbNYPixEqpF65j+Fyg1nHpcGj3Us/Gh+km5haIFsuUpGffs/bMD8ICc8z QdqG9OYAiCB/9PHJeIM7zXPKourb3pG5f1QVyjqP3gATxgeXQpazqzf1O 2/nyPFt7F7fYw5qSH+v5sycgSqKvuCwKIHt45urN24AqNGdg+PbYJ55SR PnoYPsCHWJMaeHK7VR03nYkuhZ0ydIM29bougZHBaJBlPTYSPxp7D0T3e w==; X-IronPort-AV: E=McAfee;i="6500,9779,10621"; a="332734622" X-IronPort-AV: E=Sophos;i="5.97,299,1669104000"; d="scan'208";a="332734622" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Feb 2023 05:42:06 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10621"; a="812450032" X-IronPort-AV: E=Sophos;i="5.97,299,1669104000"; d="scan'208";a="812450032" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 15 Feb 2023 05:42:04 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 4999593; Wed, 15 Feb 2023 15:42:44 +0200 (EET) From: Andy Shevchenko To: linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Ludovic Desroches , Linus Walleij , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Andy Shevchenko Subject: [PATCH v3 1/5] pinctrl: at91: use devm_kasprintf() to avoid potential leaks (part 2) Date: Wed, 15 Feb 2023 15:42:38 +0200 Message-Id: <20230215134242.37618-2-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230215134242.37618-1-andriy.shevchenko@linux.intel.com> References: <20230215134242.37618-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Use devm_kasprintf() instead of kasprintf() to avoid any potential leaks. At the moment drivers have no remove functionality hence there is no need for fixes tag. While at it, switch to use devm_kasprintf_strarray(). Signed-off-by: Andy Shevchenko Reviewed-by: Claudiu Beznea Tested-by: Claudiu Beznea --- drivers/pinctrl/pinctrl-at91.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c index 2e7debb905d5..5c01765c7a2a 100644 --- a/drivers/pinctrl/pinctrl-at91.c +++ b/drivers/pinctrl/pinctrl-at91.c @@ -18,6 +18,7 @@ #include #include #include +#include /* Since we request GPIOs from ourself */ #include @@ -1371,6 +1372,7 @@ static int at91_pinctrl_probe_dt(struct platform_device *pdev, static int at91_pinctrl_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct at91_pinctrl *info; struct pinctrl_pin_desc *pdesc; int ret, i, j, k; @@ -1394,9 +1396,19 @@ static int at91_pinctrl_probe(struct platform_device *pdev) return -ENOMEM; for (i = 0, k = 0; i < gpio_banks; i++) { + char **names; + + names = devm_kasprintf_strarray(dev, "pio", MAX_NB_GPIO_PER_BANK); + if (!names) + return -ENOMEM; + for (j = 0; j < MAX_NB_GPIO_PER_BANK; j++, k++) { + char *name = names[j]; + + strreplace(name, '-', i + 'A'); + pdesc->number = k; - pdesc->name = kasprintf(GFP_KERNEL, "pio%c%d", i + 'A', j); + pdesc->name = name; pdesc++; } } @@ -1797,7 +1809,8 @@ static const struct of_device_id at91_gpio_of_match[] = { static int at91_gpio_probe(struct platform_device *pdev) { - struct device_node *np = pdev->dev.of_node; + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; struct at91_gpio_chip *at91_chip = NULL; struct gpio_chip *chip; struct pinctrl_gpio_range *range; @@ -1866,16 +1879,14 @@ static int at91_gpio_probe(struct platform_device *pdev) chip->ngpio = ngpio; } - names = devm_kcalloc(&pdev->dev, chip->ngpio, sizeof(char *), - GFP_KERNEL); - + names = devm_kasprintf_strarray(dev, "pio", chip->ngpio); if (!names) { ret = -ENOMEM; goto clk_enable_err; } for (i = 0; i < chip->ngpio; i++) - names[i] = devm_kasprintf(&pdev->dev, GFP_KERNEL, "pio%c%d", alias_idx + 'A', i); + strreplace(names[i], '-', alias_idx + 'A'); chip->names = (const char *const *)names;