From patchwork Thu Mar 11 00:35:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre-Louis Bossart X-Patchwork-Id: 398772 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B0745C2BA13 for ; Thu, 11 Mar 2021 00:37:21 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5DD5464FCA for ; Thu, 11 Mar 2021 00:37:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5DD5464FCA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id A2F3816FC; Thu, 11 Mar 2021 01:36:28 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz A2F3816FC DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1615423038; bh=DVqUNCGx1y1R6BfcRf24ilQmIkgdAYT2WBHVe2PteYY=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=hjALxb6cFM7vBmFIg0JxiqTKQyAEaZ+jBf7lgYJdyXUfSNUVfCmlBny0/IlAOeMGZ lizl+vAhZhseOpJvds4zRNGX9CQEQhg0PmLtWwm12qtj20KhWx979Fsmfr38MmWFBG flfL+uDhLG/TLbcYw+sESCcAHicaqE3aMbYWPrwc= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 6BA92F801D8; Thu, 11 Mar 2021 01:35:42 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id E4204F80272; Thu, 11 Mar 2021 01:35:40 +0100 (CET) Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id D8ED0F8016C for ; Thu, 11 Mar 2021 01:35:32 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz D8ED0F8016C IronPort-SDR: qgEh7jBBxE4Jq/klmboBY7OR4qEMXeGKS2QkXS8AIAxVmFUOoz08lsuWi7QZCSfWRz1/GDvctu 4qCjN2VfO6wg== X-IronPort-AV: E=McAfee;i="6000,8403,9919"; a="249957220" X-IronPort-AV: E=Sophos;i="5.81,238,1610438400"; d="scan'208";a="249957220" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2021 16:35:25 -0800 IronPort-SDR: sYLPrL7yZckuxKhDQANKqVHa4zpwtNKVbsbtKwHrNkQUQGsUVNn5zqdHYGKqFtg9lSMLX1E+qc yZAqzUD+z0tw== X-IronPort-AV: E=Sophos;i="5.81,238,1610438400"; d="scan'208";a="520919936" Received: from theer-mobl2.amr.corp.intel.com (HELO pbossart-mobl3.intel.com) ([10.212.101.109]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2021 16:35:24 -0800 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Subject: [PATCH v3 1/2] ASoC: samsung: tm2_wm5110: check of of_parse return value Date: Wed, 10 Mar 2021 18:35:15 -0600 Message-Id: <20210311003516.120003-2-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210311003516.120003-1-pierre-louis.bossart@linux.intel.com> References: <20210311003516.120003-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Cc: tiwai@suse.de, Pierre-Louis Bossart , stable@vger.kernel.org, broonie@kernel.org, Krzysztof Kozlowski X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" cppcheck warning: sound/soc/samsung/tm2_wm5110.c:605:6: style: Variable 'ret' is reassigned a value before the old one has been used. [redundantAssignment] ret = devm_snd_soc_register_component(dev, &tm2_component, ^ sound/soc/samsung/tm2_wm5110.c:554:7: note: ret is assigned ret = of_parse_phandle_with_args(dev->of_node, "i2s-controller", ^ sound/soc/samsung/tm2_wm5110.c:605:6: note: ret is overwritten ret = devm_snd_soc_register_component(dev, &tm2_component, ^ The args is a stack variable, so it could have junk (uninitialized) therefore args.np could have a non-NULL and random value even though property was missing. Later could trigger invalid pointer dereference. There's no need to check for args.np because args.np won't be initialized on errors. Fixes: 8d1513cef51a ("ASoC: samsung: Add support for HDMI audio on TM2board") Cc: Suggested-by: Krzysztof Kozlowski Reviewed-by: Sylwester Nawrocki Signed-off-by: Pierre-Louis Bossart --- sound/soc/samsung/tm2_wm5110.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/samsung/tm2_wm5110.c b/sound/soc/samsung/tm2_wm5110.c index 9300fef9bf26..125e07f65d2b 100644 --- a/sound/soc/samsung/tm2_wm5110.c +++ b/sound/soc/samsung/tm2_wm5110.c @@ -553,7 +553,7 @@ static int tm2_probe(struct platform_device *pdev) ret = of_parse_phandle_with_args(dev->of_node, "i2s-controller", cells_name, i, &args); - if (!args.np) { + if (ret) { dev_err(dev, "i2s-controller property parse error: %d\n", i); ret = -EINVAL; goto dai_node_put; From patchwork Thu Mar 11 00:35:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre-Louis Bossart X-Patchwork-Id: 397611 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03F79C4332E for ; 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a="249957224" X-IronPort-AV: E=Sophos;i="5.81,238,1610438400"; d="scan'208";a="249957224" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2021 16:35:26 -0800 IronPort-SDR: H2KfJltk9EvPC0zjzLuIZyciyXnJYxlirkMDAYRjN4o8QE4NXScFBRP+QffOpDcFati882Y9dz P/oy8h6Sk4Gw== X-IronPort-AV: E=Sophos;i="5.81,238,1610438400"; d="scan'208";a="520919938" Received: from theer-mobl2.amr.corp.intel.com (HELO pbossart-mobl3.intel.com) ([10.212.101.109]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2021 16:35:25 -0800 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Subject: [PATCH v3 2/2] ASoC: samsung: tm2_wm5110: remove shadowing variable Date: Wed, 10 Mar 2021 18:35:16 -0600 Message-Id: <20210311003516.120003-3-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210311003516.120003-1-pierre-louis.bossart@linux.intel.com> References: <20210311003516.120003-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Cc: tiwai@suse.de, broonie@kernel.org, Krzysztof Kozlowski , Pierre-Louis Bossart X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" cppcheck warning: sound/soc/samsung/tm2_wm5110.c:552:26: style: Local variable 'args' shadows outer variable [shadowVariable] struct of_phandle_args args; ^ sound/soc/samsung/tm2_wm5110.c:504:25: note: Shadowed declaration struct of_phandle_args args; ^ sound/soc/samsung/tm2_wm5110.c:552:26: note: Shadow variable struct of_phandle_args args; ^ it's not clear why there was a need for a local variable at a lower scope, remove it and share the same variable between scopes. Signed-off-by: Pierre-Louis Bossart --- sound/soc/samsung/tm2_wm5110.c | 1 - 1 file changed, 1 deletion(-) diff --git a/sound/soc/samsung/tm2_wm5110.c b/sound/soc/samsung/tm2_wm5110.c index 125e07f65d2b..c1ab6c3afd0e 100644 --- a/sound/soc/samsung/tm2_wm5110.c +++ b/sound/soc/samsung/tm2_wm5110.c @@ -549,7 +549,6 @@ static int tm2_probe(struct platform_device *pdev) } for (i = 0; i < num_codecs; i++) { - struct of_phandle_args args; ret = of_parse_phandle_with_args(dev->of_node, "i2s-controller", cells_name, i, &args);