From 6b62d961373e0327f2af8fb77d6d5d6308864180 Mon Sep 17 00:00:00 2001 From: Eduardo Habkost Date: Mon, 13 Jun 2016 18:57:57 -0300 Subject: error: Remove unnecessary local_err variables 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 Message-Id: <1465855078-19435-3-git-send-email-ehabkost@redhat.com> Reviewed-by: Markus Armbruster [Blank line in s390-virtio-ccw.c restored] Signed-off-by: Markus Armbruster --- block/raw-posix.c | 8 ++------ block/raw_bsd.c | 4 +--- hw/s390x/s390-virtio-ccw.c | 4 +--- hw/s390x/virtio-ccw.c | 28 +++++++--------------------- scripts/coccinelle/remove_local_err.cocci | 29 +++++++++++++++++++++++++++++ target-i386/cpu.c | 4 +--- 6 files changed, 41 insertions(+), 36 deletions(-) create mode 100644 scripts/coccinelle/remove_local_err.cocci diff --git a/block/raw-posix.c b/block/raw-posix.c index a825a0a9f5..dbdabc9cf1 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; } @@ -2439,14 +2437,12 @@ 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 5af11b6621..b51ac98061 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 e257ca5ab0..52f079a884 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -180,10 +180,8 @@ 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 348ae4f668..1625e6b38b 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -884,13 +884,11 @@ 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) @@ -907,11 +905,9 @@ 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) @@ -931,7 +927,6 @@ 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; /* @@ -945,8 +940,7 @@ 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); } @@ -962,11 +956,9 @@ 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) @@ -987,7 +979,6 @@ 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; /* @@ -1001,8 +992,7 @@ 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) @@ -1020,11 +1010,9 @@ 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) @@ -1842,11 +1830,9 @@ 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/scripts/coccinelle/remove_local_err.cocci b/scripts/coccinelle/remove_local_err.cocci new file mode 100644 index 0000000000..9261c99687 --- /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/target-i386/cpu.c b/target-i386/cpu.c index 3665fecb5f..3bd3cfc3ad 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c @@ -1875,7 +1875,6 @@ 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; @@ -1895,8 +1894,7 @@ 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, -- cgit v1.2.3