From patchwork Mon Jun 13 21:57:57 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eduardo Habkost X-Patchwork-Id: 9174463 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6F0246044F for ; Mon, 13 Jun 2016 22:02:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5F2BC27C0C for ; Mon, 13 Jun 2016 22:02:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 51A6A27D07; Mon, 13 Jun 2016 22:02:35 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9B9A227C0C for ; Mon, 13 Jun 2016 22:02:34 +0000 (UTC) Received: from localhost ([::1]:59636 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bCZwF-0007Oa-KS for patchwork-qemu-devel@patchwork.kernel.org; Mon, 13 Jun 2016 18:02:31 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41031) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bCZsH-0003sV-LZ for qemu-devel@nongnu.org; Mon, 13 Jun 2016 17:58:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bCZsA-0004sJ-Gf for qemu-devel@nongnu.org; Mon, 13 Jun 2016 17:58:24 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40107) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bCZsA-0004sF-8t for qemu-devel@nongnu.org; Mon, 13 Jun 2016 17:58:18 -0400 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CA02212655 for ; Mon, 13 Jun 2016 21:58:17 +0000 (UTC) Received: from localhost (vpn1-7-192.gru2.redhat.com [10.97.7.192]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u5DLwGDC005285; Mon, 13 Jun 2016 17:58:17 -0400 From: Eduardo Habkost To: Markus Armbruster , qemu-devel@nongnu.org Date: Mon, 13 Jun 2016 18:57:57 -0300 Message-Id: <1465855078-19435-3-git-send-email-ehabkost@redhat.com> In-Reply-To: <1465855078-19435-1-git-send-email-ehabkost@redhat.com> References: <1465855078-19435-1-git-send-email-ehabkost@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Mon, 13 Jun 2016 21:58:17 +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 v3 2/3] error: Remove unnecessary local_err variables X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP This patch simplifies code that uses a local_err variable just to immediately use it for an error_propagate() call. Coccinelle patch used to perform the changes added to scripts/coccinelle/remove_local_err.cocci. Reviewed-by: Eric Blake Acked-by: Cornelia Huck Signed-off-by: Eduardo Habkost --- Changes v1 -> v2: * (new patch) Changes v2 -> v3: * Remove unused metavariable from script * Do changes only if errp is not touched before the error_setg() call (so we are sure *errp is not set and error_setg() won't abort) * Changes dropped from v2 due to script changes: * block.c:bdrv_create_co_entry() * block.c:bdrv_create_file() * blockdev.c:qmp_blockdev_mirror() --- scripts/coccinelle/remove_local_err.cocci | 29 +++++++++++++++++++++++++++++ block/raw-posix.c | 8 ++------ block/raw_bsd.c | 4 +--- hw/s390x/s390-virtio-ccw.c | 5 +---- hw/s390x/virtio-ccw.c | 28 +++++++--------------------- target-i386/cpu.c | 4 +--- 6 files changed, 41 insertions(+), 37 deletions(-) create mode 100644 scripts/coccinelle/remove_local_err.cocci diff --git a/scripts/coccinelle/remove_local_err.cocci b/scripts/coccinelle/remove_local_err.cocci new file mode 100644 index 0000000..9261c99 --- /dev/null +++ b/scripts/coccinelle/remove_local_err.cocci @@ -0,0 +1,29 @@ +// Replace unnecessary usage of local_err variable with +// direct usage of errp argument + +@@ +identifier F; +expression list ARGS; +expression F2; +identifier LOCAL_ERR; +identifier ERRP; +idexpression V; +typedef Error; +@@ + F(..., Error **ERRP) + { + ... +- Error *LOCAL_ERR; + ... when != LOCAL_ERR + when != ERRP +( +- F2(ARGS, &LOCAL_ERR); +- error_propagate(ERRP, LOCAL_ERR); ++ F2(ARGS, ERRP); +| +- V = F2(ARGS, &LOCAL_ERR); +- error_propagate(ERRP, LOCAL_ERR); ++ V = F2(ARGS, ERRP); +) + ... when != LOCAL_ERR + } diff --git a/block/raw-posix.c b/block/raw-posix.c index cb663d8..d7397bf 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -582,12 +582,10 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags, Error **errp) { BDRVRawState *s = bs->opaque; - Error *local_err = NULL; int ret; s->type = FTYPE_FILE; - ret = raw_open_common(bs, options, flags, 0, &local_err); - error_propagate(errp, local_err); + ret = raw_open_common(bs, options, flags, 0, errp); return ret; } @@ -2442,14 +2440,12 @@ static int cdrom_open(BlockDriverState *bs, QDict *options, int flags, Error **errp) { BDRVRawState *s = bs->opaque; - Error *local_err = NULL; int ret; s->type = FTYPE_CD; /* open will not fail even if no CD is inserted, so add O_NONBLOCK */ - ret = raw_open_common(bs, options, flags, O_NONBLOCK, &local_err); - error_propagate(errp, local_err); + ret = raw_open_common(bs, options, flags, O_NONBLOCK, errp); return ret; } diff --git a/block/raw_bsd.c b/block/raw_bsd.c index 5af11b6..b51ac98 100644 --- a/block/raw_bsd.c +++ b/block/raw_bsd.c @@ -190,11 +190,9 @@ static int raw_has_zero_init(BlockDriverState *bs) static int raw_create(const char *filename, QemuOpts *opts, Error **errp) { - Error *local_err = NULL; int ret; - ret = bdrv_create_file(filename, opts, &local_err); - error_propagate(errp, local_err); + ret = bdrv_create_file(filename, opts, errp); return ret; } diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 95ff5e3..b7112d0 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -180,10 +180,7 @@ static HotplugHandler *s390_get_hotplug_handler(MachineState *machine, static void s390_hot_add_cpu(const int64_t id, Error **errp) { MachineState *machine = MACHINE(qdev_get_machine()); - Error *err = NULL; - - s390x_new_cpu(machine->cpu_model, id, &err); - error_propagate(errp, err); + s390x_new_cpu(machine->cpu_model, id, errp); } static void ccw_machine_class_init(ObjectClass *oc, void *data) diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 464b091..50b0935 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -899,13 +899,11 @@ static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp) DeviceState *qdev = DEVICE(ccw_dev); VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); - Error *err = NULL; virtio_net_set_netclient_name(&dev->vdev, qdev->id, object_get_typename(OBJECT(qdev))); qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); - object_property_set_bool(OBJECT(vdev), true, "realized", &err); - error_propagate(errp, err); + object_property_set_bool(OBJECT(vdev), true, "realized", errp); } static void virtio_ccw_net_instance_init(Object *obj) @@ -922,11 +920,9 @@ static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp) { VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); - Error *err = NULL; qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); - object_property_set_bool(OBJECT(vdev), true, "realized", &err); - error_propagate(errp, err); + object_property_set_bool(OBJECT(vdev), true, "realized", errp); } static void virtio_ccw_blk_instance_init(Object *obj) @@ -946,7 +942,6 @@ static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp) VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); DeviceState *proxy = DEVICE(ccw_dev); - Error *err = NULL; char *bus_name; /* @@ -960,8 +955,7 @@ static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp) } qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); - object_property_set_bool(OBJECT(vdev), true, "realized", &err); - error_propagate(errp, err); + object_property_set_bool(OBJECT(vdev), true, "realized", errp); } @@ -977,11 +971,9 @@ static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp) { VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); - Error *err = NULL; qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); - object_property_set_bool(OBJECT(vdev), true, "realized", &err); - error_propagate(errp, err); + object_property_set_bool(OBJECT(vdev), true, "realized", errp); } static void virtio_ccw_balloon_instance_init(Object *obj) @@ -1002,7 +994,6 @@ static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); DeviceState *qdev = DEVICE(ccw_dev); - Error *err = NULL; char *bus_name; /* @@ -1016,8 +1007,7 @@ static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) } qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); - object_property_set_bool(OBJECT(vdev), true, "realized", &err); - error_propagate(errp, err); + object_property_set_bool(OBJECT(vdev), true, "realized", errp); } static void virtio_ccw_scsi_instance_init(Object *obj) @@ -1035,11 +1025,9 @@ static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) { VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); - Error *err = NULL; qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); - object_property_set_bool(OBJECT(vdev), true, "realized", &err); - error_propagate(errp, err); + object_property_set_bool(OBJECT(vdev), true, "realized", errp); } static void vhost_ccw_scsi_instance_init(Object *obj) @@ -1856,11 +1844,9 @@ static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp) { V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); - Error *err = NULL; qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); - object_property_set_bool(OBJECT(vdev), true, "realized", &err); - error_propagate(errp, err); + object_property_set_bool(OBJECT(vdev), true, "realized", errp); } static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data) diff --git a/target-i386/cpu.c b/target-i386/cpu.c index 895a386..2cea40a 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c @@ -1820,7 +1820,6 @@ static void x86_cpu_get_feature_words(Object *obj, Visitor *v, { uint32_t *array = (uint32_t *)opaque; FeatureWord w; - Error *err = NULL; X86CPUFeatureWordInfo word_infos[FEATURE_WORDS] = { }; X86CPUFeatureWordInfoList list_entries[FEATURE_WORDS] = { }; X86CPUFeatureWordInfoList *list = NULL; @@ -1840,8 +1839,7 @@ static void x86_cpu_get_feature_words(Object *obj, Visitor *v, list = &list_entries[w]; } - visit_type_X86CPUFeatureWordInfoList(v, "feature-words", &list, &err); - error_propagate(errp, err); + visit_type_X86CPUFeatureWordInfoList(v, "feature-words", &list, errp); } static void x86_get_hv_spinlocks(Object *obj, Visitor *v, const char *name,