From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT 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 A88D2C47404 for ; Fri, 11 Oct 2019 17:45:04 +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 77C4520640 for ; Fri, 11 Oct 2019 17:45:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 77C4520640 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:54862 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iIyyM-0002RI-TB for qemu-devel@archiver.kernel.org; Fri, 11 Oct 2019 13:45:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36802) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iIxR7-0006ZG-IF for qemu-devel@nongnu.org; Fri, 11 Oct 2019 12:06:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iIxR5-0004jm-2X for qemu-devel@nongnu.org; Fri, 11 Oct 2019 12:06:37 -0400 Received: from relay.sw.ru ([185.231.240.75]:48070) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iIxR4-0004Fd-O5; Fri, 11 Oct 2019 12:06:34 -0400 Received: from [10.94.3.0] (helo=kvm.qa.sw.ru) by relay.sw.ru with esmtp (Exim 4.92.2) (envelope-from ) id 1iIxQi-0003XG-W4; Fri, 11 Oct 2019 19:06:13 +0300 From: Vladimir Sementsov-Ogievskiy To: qemu-devel@nongnu.org Subject: [RFC v5 051/126] vfio-ccw: introduce ERRP_AUTO_PROPAGATE Date: Fri, 11 Oct 2019 19:04:37 +0300 Message-Id: <20191011160552.22907-52-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191011160552.22907-1-vsementsov@virtuozzo.com> References: <20191011160552.22907-1-vsementsov@virtuozzo.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 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: Kevin Wolf , Eric Farman , vsementsov@virtuozzo.com, David Hildenbrand , Cornelia Huck , armbru@redhat.com, Greg Kurz , Halil Pasic , Christian Borntraeger , qemu-s390x@nongnu.org, Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" If we want to add some info to errp (by error_prepend() or error_append_hint()), we must use the ERRP_AUTO_PROPAGATE macro. Otherwise, this info will not be added when errp == &fatal_err (the program will exit prior to the error_append_hint() or error_prepend() call). Fix such cases. If we want to check error after errp-function call, we need to introduce local_err and than propagate it to errp. Instead, use ERRP_AUTO_PROPAGATE macro, benefits are: 1. No need of explicit error_propagate call 2. No need of explicit local_err variable: use errp directly 3. ERRP_AUTO_PROPAGATE leaves errp as is if it's not NULL or &error_fatel, this means that we don't break error_abort (we'll abort on error_set, not on error_propagate) This commit (together with its neighbors) was generated by for f in $(git grep -l errp \*.[ch]); do \ spatch --sp-file scripts/coccinelle/auto-propagated-errp.cocci \ --macro-file scripts/cocci-macro-file.h --in-place --no-show-diff $f; \ done; then fix a bit of compilation problems: coccinelle for some reason leaves several f() { ... goto out; ... out: } patterns, with "out:" at function end. then ./python/commit-per-subsystem.py MAINTAINERS "$(< auto-msg)" (auto-msg was a file with this commit message) Still, for backporting it may be more comfortable to use only the first command and then do one huge commit. Reported-by: Kevin Wolf Reported-by: Greg Kurz Signed-off-by: Vladimir Sementsov-Ogievskiy --- hw/s390x/s390-ccw.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/hw/s390x/s390-ccw.c b/hw/s390x/s390-ccw.c index 0c5a5b60bd..415fa04091 100644 --- a/hw/s390x/s390-ccw.c +++ b/hw/s390x/s390-ccw.c @@ -55,6 +55,7 @@ static void s390_ccw_get_dev_info(S390CCWDevice *cdev, char *sysfsdev, Error **errp) { + ERRP_AUTO_PROPAGATE(); unsigned int cssid, ssid, devid; char dev_path[PATH_MAX] = {0}, *tmp; @@ -86,19 +87,19 @@ static void s390_ccw_get_dev_info(S390CCWDevice *cdev, static void s390_ccw_realize(S390CCWDevice *cdev, char *sysfsdev, Error **errp) { + ERRP_AUTO_PROPAGATE(); CcwDevice *ccw_dev = CCW_DEVICE(cdev); CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev); DeviceState *parent = DEVICE(ccw_dev); SubchDev *sch; int ret; - Error *err = NULL; - s390_ccw_get_dev_info(cdev, sysfsdev, &err); - if (err) { - goto out_err_propagate; + s390_ccw_get_dev_info(cdev, sysfsdev, errp); + if (*errp) { + return; } - sch = css_create_sch(ccw_dev->devno, &err); + sch = css_create_sch(ccw_dev->devno, errp); if (!sch) { goto out_mdevid_free; } @@ -108,13 +109,13 @@ static void s390_ccw_realize(S390CCWDevice *cdev, char *sysfsdev, Error **errp) ccw_dev->sch = sch; ret = css_sch_build_schib(sch, &cdev->hostid); if (ret) { - error_setg_errno(&err, -ret, "%s: Failed to build initial schib", + error_setg_errno(errp, -ret, "%s: Failed to build initial schib", __func__); goto out_err; } - ck->realize(ccw_dev, &err); - if (err) { + ck->realize(ccw_dev, errp); + if (*errp) { goto out_err; } @@ -128,8 +129,6 @@ out_err: g_free(sch); out_mdevid_free: g_free(cdev->mdevid); -out_err_propagate: - error_propagate(errp, err); } static void s390_ccw_unrealize(S390CCWDevice *cdev, Error **errp) -- 2.21.0