From patchwork Fri Jul 17 08:17:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yue Haibing X-Patchwork-Id: 11669499 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EC4A7913 for ; Fri, 17 Jul 2020 08:18:48 +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 E603520737 for ; Fri, 17 Jul 2020 08:18:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="vDUTy41k" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E603520737 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.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 B4893167B; Fri, 17 Jul 2020 10:17:58 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz B4893167B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1594973925; bh=+op2cGwW9qYLwQskSYGwnPYTsnRTVlrMeig5OyUoryw=; h=From:To:Subject:Date:Cc:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From; b=vDUTy41kGbSf7gX6KijezoADrQOmz+QoDW3Qs3IKZij7XfC7VUCZUChaQZNEBSgCK CqpgH26siZLInPDeqxBuJz/LWppkeV7BOW1gJY3xiJgiXzSij4G9iXPugddoafXuO3 tWtKzDjW9ZQCGL+t8SRMYFd7ctcJmek2Ri+K8sqU= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 32076F801D8; Fri, 17 Jul 2020 10:17:58 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id A7656F80217; Fri, 17 Jul 2020 10:17:56 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on alsa1.perex.cz X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL,SPF_HELO_PASS,SPF_PASS,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from huawei.com (szxga06-in.huawei.com [45.249.212.32]) (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 04841F80110 for ; Fri, 17 Jul 2020 10:17:45 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 04841F80110 Received: from DGGEMS411-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 811CDCCE162726C141B8; Fri, 17 Jul 2020 16:17:39 +0800 (CST) Received: from localhost (10.174.179.108) by DGGEMS411-HUB.china.huawei.com (10.3.19.211) with Microsoft SMTP Server id 14.3.487.0; Fri, 17 Jul 2020 16:17:28 +0800 From: YueHaibing To: , , Subject: [PATCH -next] ALSA: line6: Use kmemdup in podhd_set_monitor_level() Date: Fri, 17 Jul 2020 16:17:10 +0800 Message-ID: <20200717081710.39180-1-yuehaibing@huawei.com> X-Mailer: git-send-email 2.10.2.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.174.179.108] X-CFilter-Loop: Reflected Cc: alsa-devel@alsa-project.org, YueHaibing , linux-kernel@vger.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" Use kmemdup rather than duplicating its implementation. Signed-off-by: YueHaibing --- sound/usb/line6/podhd.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/sound/usb/line6/podhd.c b/sound/usb/line6/podhd.c index 1557483ec657..eef45f7fef0d 100644 --- a/sound/usb/line6/podhd.c +++ b/sound/usb/line6/podhd.c @@ -293,12 +293,10 @@ static void podhd_set_monitor_level(struct usb_line6_podhd *podhd, int value) }; unsigned char *buf; - buf = kmalloc(sizeof(msg), GFP_KERNEL); + buf = kmemdup(msg, sizeof(msg), GFP_KERNEL); if (!buf) return; - memcpy(buf, msg, sizeof(msg)); - if (value < 0) value = 0;