From patchwork Tue Jul 2 19:41:34 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Alex Williamson X-Patchwork-Id: 11028681 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EB3831398 for ; Tue, 2 Jul 2019 20:36:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C5D0627FB0 for ; Tue, 2 Jul 2019 20:36:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B41F326E82; Tue, 2 Jul 2019 20:36:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 394DE26E82 for ; Tue, 2 Jul 2019 20:36:34 +0000 (UTC) Received: from localhost ([::1]:57240 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hiPVx-0004aQ-Ky for patchwork-qemu-devel@patchwork.kernel.org; Tue, 02 Jul 2019 16:36:33 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42853) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hiOfh-0007B1-L3 for qemu-devel@nongnu.org; Tue, 02 Jul 2019 15:42:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hiOfa-0004bF-3G for qemu-devel@nongnu.org; Tue, 02 Jul 2019 15:42:29 -0400 Received: from mx1.redhat.com ([209.132.183.28]:44334) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hiOfW-000448-2S; Tue, 02 Jul 2019 15:42:23 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5A0CB3086201; Tue, 2 Jul 2019 19:41:39 +0000 (UTC) Received: from gimli.home (ovpn-116-83.phx2.redhat.com [10.3.116.83]) by smtp.corp.redhat.com (Postfix) with ESMTP id 760945C28D; Tue, 2 Jul 2019 19:41:34 +0000 (UTC) From: Alex Williamson To: cohuck@redhat.com, farman@linux.ibm.com, alifm@linux.ibm.com Date: Tue, 02 Jul 2019 13:41:34 -0600 Message-ID: <156209642116.14915.9598593247782519613.stgit@gimli.home> User-Agent: StGit/0.19-dirty MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.42]); Tue, 02 Jul 2019 19:41:39 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH] vfio-ccw: Test vfio_set_irq_signaling() return value 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: eric.auger@redhat.com, qemu-s390x@nongnu.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Coverity doesn't like that most callers of vfio_set_irq_signaling() check the return value and doesn't understand the equivalence of testing the error pointer instead. Test the return value consistently. Reported-by: Coverity (CID 1402783) Signed-off-by: Alex Williamson Reviewed-by: Eric Auger Reviewed-by: Philippe Mathieu-Daudé --- hw/vfio/ccw.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c index 6d0296fe4d9c..16f200e6fe6a 100644 --- a/hw/vfio/ccw.c +++ b/hw/vfio/ccw.c @@ -327,9 +327,8 @@ static void vfio_ccw_unregister_io_notifier(VFIOCCWDevice *vcdev) { Error *err = NULL; - vfio_set_irq_signaling(&vcdev->vdev, VFIO_CCW_IO_IRQ_INDEX, 0, - VFIO_IRQ_SET_ACTION_TRIGGER, -1, &err); - if (err) { + if (vfio_set_irq_signaling(&vcdev->vdev, VFIO_CCW_IO_IRQ_INDEX, 0, + VFIO_IRQ_SET_ACTION_TRIGGER, -1, &err)) { error_reportf_err(err, VFIO_MSG_PREFIX, vcdev->vdev.name); }