From patchwork Mon Mar 15 16:39:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Pierre-Louis Bossart X-Patchwork-Id: 12140073 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 396FFC433DB for ; Mon, 15 Mar 2021 16:42:26 +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 0603E64F2A for ; Mon, 15 Mar 2021 16:42:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0603E64F2A 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 4B79217B4; Mon, 15 Mar 2021 17:41:33 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 4B79217B4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1615826543; bh=2tsCdGJrlm7rYgVWK1opS+T7B/2Sm3z0L6QTt6VjmOo=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=FGwhft29yRVsAGn/nwKAH7LOXPkVo/JWqY9u2W/+QyGGMX9JwStXnPu6Ri7d/ySmG qRnZaCY5/8Jq9l2E52TrzrAxG8Xm+5DfyOrmA5poNRjsmkwR+W8EeTJA2Lx9LHP8zX HBTgDY6EpNuELTjQzBlHRWzJMqerObOsvVm+IA6U= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id A8BD3F801F7; Mon, 15 Mar 2021 17:40:12 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 8CF9AF80423; Mon, 15 Mar 2021 17:40:11 +0100 (CET) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) (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 34453F801F7 for ; Mon, 15 Mar 2021 17:39:57 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 34453F801F7 IronPort-SDR: ugjPNQDrf1mztqfZvs7s2O4zTI0z80YMYZzoZB8+eL7FyOdJWYtCLV9KM4MbI37dkdAB/fvwQ3 PKSokttK10ww== X-IronPort-AV: E=McAfee;i="6000,8403,9924"; a="274160570" X-IronPort-AV: E=Sophos;i="5.81,251,1610438400"; d="scan'208";a="274160570" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Mar 2021 09:39:45 -0700 IronPort-SDR: 3EP6WpDAfYPCw3g2XApnjVgCwxQl7v3Z0GQ8OuQMFn8vT0fDNsXfcpDS8QX6cjFtFtZVZrJVKy WenHcMUHAwuA== X-IronPort-AV: E=Sophos;i="5.81,251,1610438400"; d="scan'208";a="604912907" Received: from pwells-mobl2.amr.corp.intel.com (HELO pbossart-mobl3.intel.com) ([10.212.5.38]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Mar 2021 09:39:43 -0700 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Subject: [PATCH 3/3] ASoC: SOF: remove superfluous NULL check in debugfs read Date: Mon, 15 Mar 2021 11:39:32 -0500 Message-Id: <20210315163932.18663-4-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210315163932.18663-1-pierre-louis.bossart@linux.intel.com> References: <20210315163932.18663-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Cc: Guennadi Liakhovetski , Xiuli Pan , Keqiao Zhang , tiwai@suse.de, Ranjani Sridharan , Pierre-Louis Bossart , broonie@kernel.org 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" From: Guennadi Liakhovetski When reading from IPC flood debugfs entries no need to check whether .cache_buf is NULL - it's impossible since otherwise the initialisation would have failed. This also fixes a klocwork reported issue: passed to function and may be dereferenced there by passing argument 2 to function 'memcpy' at line 510. sound/soc/sof/debug.c:510 | sof_dfsentry_read() Reported-by: Keqiao Zhang Reviewed-by: Ranjani Sridharan Reviewed-by: Xiuli Pan Signed-off-by: Guennadi Liakhovetski Signed-off-by: Pierre-Louis Bossart --- sound/soc/sof/debug.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/sound/soc/sof/debug.c b/sound/soc/sof/debug.c index 778c7d028493..a51a928ea40a 100644 --- a/sound/soc/sof/debug.c +++ b/sound/soc/sof/debug.c @@ -451,8 +451,7 @@ static ssize_t sof_dfsentry_read(struct file *file, char __user *buffer, dentry = file->f_path.dentry; if ((!strcmp(dentry->d_name.name, "ipc_flood_count") || - !strcmp(dentry->d_name.name, "ipc_flood_duration_ms")) && - dfse->cache_buf) { + !strcmp(dentry->d_name.name, "ipc_flood_duration_ms"))) { if (*ppos) return 0;