From patchwork Thu Aug 13 07:37:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Qun X-Patchwork-Id: 11711891 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 BDEC8138C for ; Thu, 13 Aug 2020 07:39:35 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 9E67E20771 for ; Thu, 13 Aug 2020 07:39:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9E67E20771 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:51790 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k67pm-0001fD-S2 for patchwork-qemu-devel@patchwork.kernel.org; Thu, 13 Aug 2020 03:39:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40800) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k67p6-0008JN-F6; Thu, 13 Aug 2020 03:38:52 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:33700 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 1k67p1-0001n3-Tu; Thu, 13 Aug 2020 03:38:52 -0400 Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 3CFC488750FE0B924AD5; Thu, 13 Aug 2020 15:38:42 +0800 (CST) Received: from huawei.com (10.175.104.175) by DGGEMS402-HUB.china.huawei.com (10.3.19.202) with Microsoft SMTP Server id 14.3.487.0; Thu, 13 Aug 2020 15:38:34 +0800 From: Chen Qun To: , Subject: [PATCH 05/11] hw/virtio/vhost-user:Remove dead assignment in scrub_shadow_regions() Date: Thu, 13 Aug 2020 15:37:06 +0800 Message-ID: <20200813073712.4001404-6-kuhn.chenqun@huawei.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20200813073712.4001404-1-kuhn.chenqun@huawei.com> References: <20200813073712.4001404-1-kuhn.chenqun@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.104.175] X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.32; envelope-from=kuhn.chenqun@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/13 03:38:34 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=-0.01, RCVD_IN_MSPIKE_WL=-0.01, 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, "Michael S. Tsirkin" , pannengyuan@huawei.com, Raphael Norwitz , Euler Robot , Chen Qun Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Clang static code analyzer show warning: hw/virtio/vhost-user.c:606:9: warning: Value stored to 'mr' is never read mr = vhost_user_get_mr_data(reg->userspace_addr, &offset, &fd); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Reported-by: Euler Robot Signed-off-by: Chen Qun Reviewed-by: Raphael Norwitz Reviewed-by: Michael S. Tsirkin --- Cc: "Michael S. Tsirkin" Cc: Raphael Norwitz --- hw/virtio/vhost-user.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index d7e2423762..9c5b4f7fbc 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -603,7 +603,7 @@ static void scrub_shadow_regions(struct vhost_dev *dev, */ for (i = 0; i < dev->mem->nregions; i++) { reg = &dev->mem->regions[i]; - mr = vhost_user_get_mr_data(reg->userspace_addr, &offset, &fd); + vhost_user_get_mr_data(reg->userspace_addr, &offset, &fd); if (fd > 0) { ++fd_num; }