From patchwork Mon Sep 30 08:14:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= X-Patchwork-Id: 1990792 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=eImr9MAD; dkim-atps=neutral Authentication-Results: legolas.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=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XHDVF0Qwdz1xtM for ; Mon, 30 Sep 2024 18:18:29 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1svBbj-0001Wt-Cd; Mon, 30 Sep 2024 04:18:16 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1svBZx-0003le-Vn for qemu-devel@nongnu.org; Mon, 30 Sep 2024 04:16:29 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1svBZt-0005k2-Ab for qemu-devel@nongnu.org; Mon, 30 Sep 2024 04:16:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1727684178; 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: in-reply-to:in-reply-to:references:references; bh=JWGVABklCLrU7/ALyC116NV9eFWhHW+S/KvcK29JhAU=; b=eImr9MADNpTNSBNfejGhLHWzY4iirw2NMOjE/VJcWzQLznQ+JEg8lQ2+sSt2Y8/Wr/Tt1e gKhRQTSILt1H/6CBfww6qccab+zRomVMUX2XFno7xWUQoXFwQkI4XVDydYtMgBxCRQwwR/ Uz9Hd32kVJ6qfn+UmY7cCtSFmKM6p/0= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-552-bs9SLGCQNkWcNYEly4406Q-1; Mon, 30 Sep 2024 04:16:15 -0400 X-MC-Unique: bs9SLGCQNkWcNYEly4406Q-1 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (unknown [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 96A7B1953951; Mon, 30 Sep 2024 08:16:12 +0000 (UTC) Received: from localhost (unknown [10.39.208.36]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 8C2FD1955DC7; Mon, 30 Sep 2024 08:16:10 +0000 (UTC) From: marcandre.lureau@redhat.com To: qemu-devel@nongnu.org Cc: Hanna Reitz , Christian Schoenebeck , Fam Zheng , Song Gao , =?utf-8?q?Alex_Benn=C3=A9e?= , Pierrick Bouvier , Mahmoud Mandour , qemu-block@nongnu.org, Laurent Vivier , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Vladimir Sementsov-Ogievskiy , Greg Kurz , =?utf-8?q?Eugenio_P=C3=A9rez?= , Gerd Hoffmann , Bin Meng , Fabiano Rosas , Eric Blake , Hyman Huang , Kevin Wolf , Stefano Garzarella , "Michael S. Tsirkin" , Alexandre Iooss , Marcel Apfelbaum , John Snow , Eduardo Habkost , Jesper Devantier , Peter Xu , Stefan Hajnoczi , Klaus Jensen , Keith Busch , Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Yuval Shaia , Bin Meng , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= Subject: [PATCH v3 09/22] hw/vhost-scsi: fix -Werror=maybe-uninitialized Date: Mon, 30 Sep 2024 12:14:44 +0400 Message-ID: <20240930081458.1926382-10-marcandre.lureau@redhat.com> In-Reply-To: <20240930081458.1926382-1-marcandre.lureau@redhat.com> References: <20240930081458.1926382-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass client-ip=170.10.133.124; envelope-from=marcandre.lureau@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.095, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Marc-André Lureau ../hw/scsi/vhost-scsi.c:173:12: error: ‘ret’ may be used uninitialized [-Werror=maybe-uninitialized] It can be reached when num_queues=0. It probably doesn't make much sense to instantiate a vhost-scsi with 0 IO queues though. For now, make vhost_scsi_set_workers() return success/0 anyway, when no workers have been setup. Signed-off-by: Marc-André Lureau Reviewed-by: Stefano Garzarella --- hw/scsi/vhost-scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/vhost-scsi.c b/hw/scsi/vhost-scsi.c index 49cff2a0cb..22d16dc26b 100644 --- a/hw/scsi/vhost-scsi.c +++ b/hw/scsi/vhost-scsi.c @@ -172,7 +172,7 @@ static int vhost_scsi_set_workers(VHostSCSICommon *vsc, bool per_virtqueue) struct vhost_dev *dev = &vsc->dev; struct vhost_vring_worker vq_worker; struct vhost_worker_state worker; - int i, ret; + int i, ret = 0; /* Use default worker */ if (!per_virtqueue || dev->nvqs == VHOST_SCSI_VQ_NUM_FIXED + 1) {