From patchwork Thu Aug 27 11:03:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Qun X-Patchwork-Id: 1352486 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=huawei.com Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4Bcg3866Jgz9sSJ for ; Thu, 27 Aug 2020 21:09:08 +1000 (AEST) Received: from localhost ([::1]:35704 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kBFmE-0003w7-Qt for incoming@patchwork.ozlabs.org; Thu, 27 Aug 2020 07:09:06 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51152) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kBFiJ-0004iU-9n; Thu, 27 Aug 2020 07:05:06 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:4663 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kBFiG-0007aF-PP; Thu, 27 Aug 2020 07:05:03 -0400 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 54DA8EB59F40A3DDEFF0; Thu, 27 Aug 2020 19:04:56 +0800 (CST) Received: from huawei.com (10.175.104.175) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.487.0; Thu, 27 Aug 2020 19:04:46 +0800 From: Chen Qun To: , Subject: [PATCH v3 08/10] usb/bus: Remove dead assignment in usb_get_fw_dev_path() Date: Thu, 27 Aug 2020 19:03:09 +0800 Message-ID: <20200827110311.164316-9-kuhn.chenqun@huawei.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20200827110311.164316-1-kuhn.chenqun@huawei.com> References: <20200827110311.164316-1-kuhn.chenqun@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.104.175] X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.190; envelope-from=kuhn.chenqun@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/27 02:12:47 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: zhang.zhanghailiang@huawei.com, pannengyuan@huawei.com, Markus Armbruster , Gerd Hoffmann , Euler Robot , Chen Qun Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Clang static code analyzer show warning: qemu/hw/usb/bus.c:615:13: warning: Value stored to 'pos' is never read pos += snprintf(fw_path + pos, fw_len - pos, "%s@%lx", Reported-by: Euler Robot Signed-off-by: Chen Qun Reviewed-by: Markus Armbruster Reviewed-by: Gerd Hoffmann --- Cc: Gerd Hoffmann Cc: Markus Armbruster v2->v3: The format of the snprintf statement is modified(Base on Markus review). --- hw/usb/bus.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/usb/bus.c b/hw/usb/bus.c index b17bda3b29..2b11041451 100644 --- a/hw/usb/bus.c +++ b/hw/usb/bus.c @@ -612,8 +612,8 @@ static char *usb_get_fw_dev_path(DeviceState *qdev) in++; } else { /* the device itself */ - pos += snprintf(fw_path + pos, fw_len - pos, "%s@%lx", - qdev_fw_name(qdev), nr); + snprintf(fw_path + pos, fw_len - pos, "%s@%lx", + qdev_fw_name(qdev), nr); break; } }