From patchwork Sun Sep 20 15:20:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 304903 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=-9.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS 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 42768C43465 for ; Sun, 20 Sep 2020 15:21:27 +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 A2FC020897 for ; Sun, 20 Sep 2020 15:21:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="S6izdwyp" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A2FC020897 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:60642 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kK19Z-0001zN-IC for qemu-devel@archiver.kernel.org; Sun, 20 Sep 2020 11:21:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52390) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kK18r-0001ZJ-I8 for qemu-devel@nongnu.org; Sun, 20 Sep 2020 11:20:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:22418) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kK18n-0008Ll-1p for qemu-devel@nongnu.org; Sun, 20 Sep 2020 11:20:41 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1600615232; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=fPXueWttktEUjcOPlrIesR5oL3s/6sAM6uv0WPBOABU=; b=S6izdwyp3VM/Qu1wP4+W30PcfkABpChV0x8nQz4OLsSVUds+sVhuDhIhL7h2sQ9QxNz4Xd aqKhq2J6Em9g0Aj8SQSS8zHxIeu/BLRKFrUU8e9EKvgbS2EO1vP5kqyFG4MJ2YnI/eL9mv eDjRAkjAPbAsz1q+TxWh0TObAIqWG8A= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-408-J_9zU-ooOSa1QuDFThU_XA-1; Sun, 20 Sep 2020 11:20:30 -0400 X-MC-Unique: J_9zU-ooOSa1QuDFThU_XA-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 00B2110BBEC0 for ; Sun, 20 Sep 2020 15:20:30 +0000 (UTC) Received: from thinkpad.redhat.com (ovpn-113-15.ams2.redhat.com [10.36.113.15]) by smtp.corp.redhat.com (Postfix) with ESMTP id 711325576A; Sun, 20 Sep 2020 15:20:25 +0000 (UTC) From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PATCH] vhost-vdpa: remove useless variable Date: Sun, 20 Sep 2020 17:20:24 +0200 Message-Id: <20200920152024.860172-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lvivier@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/20 11:14:48 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -45 X-Spam_score: -4.6 X-Spam_bar: ---- X-Spam_report: (-4.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.501, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=-1, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=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: Laurent Vivier , Jason Wang , Cindy Lu , "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" in vhost_vdpa_listener_region_del(), try_unmap is always true and so, vhost_vdpa_dma_unmap() is always called. We can remove the variable Signed-off-by: Laurent Vivier Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Li Qiang --- hw/virtio/vhost-vdpa.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 4580f3efd8a2..c6cae6a6cabf 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -153,7 +153,6 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, hwaddr iova; Int128 llend, llsize; int ret; - bool try_unmap = true; if (vhost_vdpa_listener_skipped_section(section)) { return; @@ -176,11 +175,9 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, llsize = int128_sub(llend, int128_make64(iova)); - if (try_unmap) { - ret = vhost_vdpa_dma_unmap(v, iova, int128_get64(llsize)); - if (ret) { - error_report("vhost_vdpa dma unmap error!"); - } + ret = vhost_vdpa_dma_unmap(v, iova, int128_get64(llsize)); + if (ret) { + error_report("vhost_vdpa dma unmap error!"); } memory_region_unref(section->mr);