From patchwork Mon Feb 13 15:45:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1741717 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=TXAwbsKI; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4PFpZB5TcWz23h0 for ; Tue, 14 Feb 2023 02:45:06 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230214AbjBMPpF (ORCPT ); Mon, 13 Feb 2023 10:45:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58816 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231218AbjBMPo7 (ORCPT ); Mon, 13 Feb 2023 10:44:59 -0500 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AD7C6193E9; Mon, 13 Feb 2023 07:44:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1676303098; x=1707839098; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=RxT731gyTPHtkinLs+KBJv0pPNDJEuCGaqZA4MmUQ3E=; b=TXAwbsKIaac37qfOGL5OqszYBN/2P00nlNCn7WEWVvUvoNZwZ/E+15+C QNkgHhFmLqNwa6PrmodJPyM/an07JubKAVyuQ01UtLVr9I1GN1ab7xHjh LBWUF9MGozbcimy7d44JIy9+RVpApGZQiHC2dJLlOrnfzynf2jyq6ELcC qFORj3G47MI7KIZlUgGBH10e28Xnq9x5WAQKlT97cwMFQ+xUkoORStmS+ +5o4HPmIf5KSNpQ3k1pzmIuAy7di1AeL1lI3bveLM3Bp9IhwPMnM7mgAp B79IkqSOQzH7+xGMqScjlc1UZUtK106k8Qs6yXBSE6CqLDUqpxVKHN20M A==; X-IronPort-AV: E=McAfee;i="6500,9779,10620"; a="310549204" X-IronPort-AV: E=Sophos;i="5.97,294,1669104000"; d="scan'208";a="310549204" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Feb 2023 07:44:58 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10620"; a="701301717" X-IronPort-AV: E=Sophos;i="5.97,294,1669104000"; d="scan'208";a="701301717" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga001.jf.intel.com with ESMTP; 13 Feb 2023 07:44:55 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 1C8CAD0; Mon, 13 Feb 2023 17:45:35 +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 v2 1/5] pinctrl: at91: use devm_kasprintf() to avoid potential leaks (part 2) Date: Mon, 13 Feb 2023 17:45:28 +0200 Message-Id: <20230213154532.32992-2-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230213154532.32992-1-andriy.shevchenko@linux.intel.com> References: <20230213154532.32992-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 X-Spam-Status: No, score=-4.3 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_PASS, SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net 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;