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[PATCH v8 10/10] xen: introduce ERRP_AUTO_PROPAGATE
|
From: |
Vladimir Sementsov-Ogievskiy |
|
Subject: |
[PATCH v8 10/10] xen: introduce ERRP_AUTO_PROPAGATE |
|
Date: |
Fri, 6 Mar 2020 08:15:36 +0300 |
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 == &error_fatal
(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 then 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_fatal, this means that we don't break error_abort
(we'll abort on error_set, not on error_propagate)
This commit is generated by command
sed -n '/^X86 Xen CPUs$/,/^$/{s/^F: //p}' MAINTAINERS | \
xargs git ls-files | grep '\.[hc]$' | \
xargs spatch \
--sp-file scripts/coccinelle/auto-propagated-errp.cocci \
--macro-file scripts/cocci-macro-file.h \
--in-place --no-show-diff --max-width 80
Reported-by: Kevin Wolf <address@hidden>
Reported-by: Greg Kurz <address@hidden>
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
hw/block/dataplane/xen-block.c | 17 ++---
hw/block/xen-block.c | 125 ++++++++++++++-------------------
hw/pci-host/xen_igd_pt.c | 7 +-
hw/xen/xen-backend.c | 7 +-
hw/xen/xen-bus.c | 92 ++++++++++--------------
hw/xen/xen-host-pci-device.c | 27 ++++---
hw/xen/xen_pt.c | 25 +++----
hw/xen/xen_pt_config_init.c | 20 +++---
8 files changed, 138 insertions(+), 182 deletions(-)
diff --git a/hw/block/dataplane/xen-block.c b/hw/block/dataplane/xen-block.c
index 288a87a814..3a8469fe87 100644
--- a/hw/block/dataplane/xen-block.c
+++ b/hw/block/dataplane/xen-block.c
@@ -739,8 +739,8 @@ void xen_block_dataplane_start(XenBlockDataPlane *dataplane,
unsigned int protocol,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
XenDevice *xendev = dataplane->xendev;
- Error *local_err = NULL;
unsigned int ring_size;
unsigned int i;
@@ -776,9 +776,8 @@ void xen_block_dataplane_start(XenBlockDataPlane *dataplane,
}
xen_device_set_max_grant_refs(xendev, dataplane->nr_ring_ref,
- &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ errp);
+ if (*errp) {
goto stop;
}
@@ -786,9 +785,8 @@ void xen_block_dataplane_start(XenBlockDataPlane *dataplane,
dataplane->ring_ref,
dataplane->nr_ring_ref,
PROT_READ | PROT_WRITE,
- &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ errp);
+ if (*errp) {
goto stop;
}
@@ -821,9 +819,8 @@ void xen_block_dataplane_start(XenBlockDataPlane *dataplane,
dataplane->event_channel =
xen_device_bind_event_channel(xendev, event_channel,
xen_block_dataplane_event, dataplane,
- &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ errp);
+ if (*errp) {
goto stop;
}
diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c
index 686bbc3f0d..717a80d5b5 100644
--- a/hw/block/xen-block.c
+++ b/hw/block/xen-block.c
@@ -194,6 +194,7 @@ static const BlockDevOps xen_block_dev_ops = {
static void xen_block_realize(XenDevice *xendev, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
XenBlockDevice *blockdev = XEN_BLOCK_DEVICE(xendev);
XenBlockDeviceClass *blockdev_class =
XEN_BLOCK_DEVICE_GET_CLASS(xendev);
@@ -201,7 +202,6 @@ static void xen_block_realize(XenDevice *xendev, Error
**errp)
XenBlockVdev *vdev = &blockdev->props.vdev;
BlockConf *conf = &blockdev->props.conf;
BlockBackend *blk = conf->blk;
- Error *local_err = NULL;
if (vdev->type == XEN_BLOCK_VDEV_TYPE_INVALID) {
error_setg(errp, "vdev property not set");
@@ -211,9 +211,8 @@ static void xen_block_realize(XenDevice *xendev, Error
**errp)
trace_xen_block_realize(type, vdev->disk, vdev->partition);
if (blockdev_class->realize) {
- blockdev_class->realize(blockdev, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ blockdev_class->realize(blockdev, errp);
+ if (*errp) {
return;
}
}
@@ -283,8 +282,8 @@ static void xen_block_frontend_changed(XenDevice *xendev,
enum xenbus_state frontend_state,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
enum xenbus_state backend_state = xen_device_backend_get_state(xendev);
- Error *local_err = NULL;
switch (frontend_state) {
case XenbusStateInitialised:
@@ -293,15 +292,13 @@ static void xen_block_frontend_changed(XenDevice *xendev,
break;
}
- xen_block_disconnect(xendev, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ xen_block_disconnect(xendev, errp);
+ if (*errp) {
break;
}
- xen_block_connect(xendev, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ xen_block_connect(xendev, errp);
+ if (*errp) {
break;
}
@@ -314,9 +311,8 @@ static void xen_block_frontend_changed(XenDevice *xendev,
case XenbusStateClosed:
case XenbusStateUnknown:
- xen_block_disconnect(xendev, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ xen_block_disconnect(xendev, errp);
+ if (*errp) {
break;
}
@@ -403,10 +399,10 @@ static int vbd_name_to_disk(const char *name, const char
**endp,
static void xen_block_set_vdev(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
XenBlockVdev *vdev = qdev_get_prop_ptr(dev, prop);
- Error *local_err = NULL;
char *str, *p;
const char *end;
@@ -415,9 +411,8 @@ static void xen_block_set_vdev(Object *obj, Visitor *v,
const char *name,
return;
}
- visit_type_str(v, name, &str, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ visit_type_str(v, name, &str, errp);
+ if (*errp) {
return;
}
@@ -671,9 +666,9 @@ static void xen_block_blockdev_del(const char *node_name,
Error **errp)
static char *xen_block_blockdev_add(const char *id, QDict *qdict,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
const char *driver = qdict_get_try_str(qdict, "driver");
BlockdevOptions *options = NULL;
- Error *local_err = NULL;
char *node_name;
Visitor *v;
@@ -688,18 +683,16 @@ static char *xen_block_blockdev_add(const char *id, QDict
*qdict,
trace_xen_block_blockdev_add(node_name);
v = qobject_input_visitor_new(QOBJECT(qdict));
- visit_type_BlockdevOptions(v, NULL, &options, &local_err);
+ visit_type_BlockdevOptions(v, NULL, &options, errp);
visit_free(v);
- if (local_err) {
- error_propagate(errp, local_err);
+ if (*errp) {
goto fail;
}
- qmp_blockdev_add(options, &local_err);
+ qmp_blockdev_add(options, errp);
- if (local_err) {
- error_propagate(errp, local_err);
+ if (*errp) {
goto fail;
}
@@ -718,14 +711,12 @@ fail:
static void xen_block_drive_destroy(XenBlockDrive *drive, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
char *node_name = drive->node_name;
if (node_name) {
- Error *local_err = NULL;
-
- xen_block_blockdev_del(node_name, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ xen_block_blockdev_del(node_name, errp);
+ if (*errp) {
return;
}
g_free(node_name);
@@ -739,6 +730,7 @@ static XenBlockDrive *xen_block_drive_create(const char *id,
const char *device_type,
QDict *opts, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
const char *params = qdict_get_try_str(opts, "params");
const char *mode = qdict_get_try_str(opts, "mode");
const char *direct_io_safe = qdict_get_try_str(opts, "direct-io-safe");
@@ -746,7 +738,6 @@ static XenBlockDrive *xen_block_drive_create(const char *id,
char *driver = NULL;
char *filename = NULL;
XenBlockDrive *drive = NULL;
- Error *local_err = NULL;
QDict *file_layer;
QDict *driver_layer;
@@ -825,13 +816,12 @@ static XenBlockDrive *xen_block_drive_create(const char
*id,
g_assert(!drive->node_name);
drive->node_name = xen_block_blockdev_add(drive->id, driver_layer,
- &local_err);
+ errp);
qobject_unref(driver_layer);
done:
- if (local_err) {
- error_propagate(errp, local_err);
+ if (*errp) {
xen_block_drive_destroy(drive, NULL);
return NULL;
}
@@ -856,15 +846,13 @@ static void xen_block_iothread_destroy(XenBlockIOThread
*iothread,
static XenBlockIOThread *xen_block_iothread_create(const char *id,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
XenBlockIOThread *iothread = g_new(XenBlockIOThread, 1);
- Error *local_err = NULL;
iothread->id = g_strdup(id);
- qmp_object_add(TYPE_IOTHREAD, id, false, NULL, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
-
+ qmp_object_add(TYPE_IOTHREAD, id, false, NULL, errp);
+ if (*errp) {
g_free(iothread->id);
g_free(iothread);
return NULL;
@@ -876,6 +864,7 @@ static XenBlockIOThread *xen_block_iothread_create(const
char *id,
static void xen_block_device_create(XenBackendInstance *backend,
QDict *opts, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
XenBus *xenbus = xen_backend_get_bus(backend);
const char *name = xen_backend_get_name(backend);
unsigned long number;
@@ -883,7 +872,6 @@ static void xen_block_device_create(XenBackendInstance
*backend,
XenBlockDrive *drive = NULL;
XenBlockIOThread *iothread = NULL;
XenDevice *xendev = NULL;
- Error *local_err = NULL;
const char *type;
XenBlockDevice *blockdev;
@@ -915,52 +903,48 @@ static void xen_block_device_create(XenBackendInstance
*backend,
goto fail;
}
- drive = xen_block_drive_create(vdev, device_type, opts, &local_err);
+ drive = xen_block_drive_create(vdev, device_type, opts, errp);
if (!drive) {
- error_propagate_prepend(errp, local_err, "failed to create drive: ");
+ error_prepend(errp, "failed to create drive: ");
goto fail;
}
- iothread = xen_block_iothread_create(vdev, &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "failed to create iothread: ");
+ iothread = xen_block_iothread_create(vdev, errp);
+ if (*errp) {
+ error_prepend(errp, "failed to create iothread: ");
goto fail;
}
xendev = XEN_DEVICE(qdev_create(BUS(xenbus), type));
blockdev = XEN_BLOCK_DEVICE(xendev);
- object_property_set_str(OBJECT(xendev), vdev, "vdev", &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err, "failed to set 'vdev': ");
+ object_property_set_str(OBJECT(xendev), vdev, "vdev", errp);
+ if (*errp) {
+ error_prepend(errp, "failed to set 'vdev': ");
goto fail;
}
object_property_set_str(OBJECT(xendev),
xen_block_drive_get_node_name(drive), "drive",
- &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err, "failed to set 'drive': ");
+ errp);
+ if (*errp) {
+ error_prepend(errp, "failed to set 'drive': ");
goto fail;
}
object_property_set_str(OBJECT(xendev), iothread->id, "iothread",
- &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "failed to set 'iothread': ");
+ errp);
+ if (*errp) {
+ error_prepend(errp, "failed to set 'iothread': ");
goto fail;
}
blockdev->iothread = iothread;
blockdev->drive = drive;
- object_property_set_bool(OBJECT(xendev), true, "realized", &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "realization of device %s failed: ",
- type);
+ object_property_set_bool(OBJECT(xendev), true, "realized", errp);
+ if (*errp) {
+ error_prepend(errp, "realization of device %s failed: ", type);
goto fail;
}
@@ -984,6 +968,7 @@ fail:
static void xen_block_device_destroy(XenBackendInstance *backend,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
XenDevice *xendev = xen_backend_get_device(backend);
XenBlockDevice *blockdev = XEN_BLOCK_DEVICE(xendev);
XenBlockVdev *vdev = &blockdev->props.vdev;
@@ -995,23 +980,17 @@ static void xen_block_device_destroy(XenBackendInstance
*backend,
object_unparent(OBJECT(xendev));
if (iothread) {
- Error *local_err = NULL;
-
- xen_block_iothread_destroy(iothread, &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "failed to destroy iothread: ");
+ xen_block_iothread_destroy(iothread, errp);
+ if (*errp) {
+ error_prepend(errp, "failed to destroy iothread: ");
return;
}
}
if (drive) {
- Error *local_err = NULL;
-
- xen_block_drive_destroy(drive, &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "failed to destroy drive: ");
+ xen_block_drive_destroy(drive, errp);
+ if (*errp) {
+ error_prepend(errp, "failed to destroy drive: ");
}
}
}
diff --git a/hw/pci-host/xen_igd_pt.c b/hw/pci-host/xen_igd_pt.c
index efcc9347ff..29ade9ca25 100644
--- a/hw/pci-host/xen_igd_pt.c
+++ b/hw/pci-host/xen_igd_pt.c
@@ -79,17 +79,16 @@ static void host_pci_config_read(int pos, int len, uint32_t
*val, Error **errp)
static void igd_pt_i440fx_realize(PCIDevice *pci_dev, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
uint32_t val = 0;
size_t i;
int pos, len;
- Error *local_err = NULL;
for (i = 0; i < ARRAY_SIZE(igd_host_bridge_infos); i++) {
pos = igd_host_bridge_infos[i].offset;
len = igd_host_bridge_infos[i].len;
- host_pci_config_read(pos, len, &val, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ host_pci_config_read(pos, len, &val, errp);
+ if (*errp) {
return;
}
pci_default_write_config(pci_dev, pos, val, len);
diff --git a/hw/xen/xen-backend.c b/hw/xen/xen-backend.c
index da065f81b7..1cc0694053 100644
--- a/hw/xen/xen-backend.c
+++ b/hw/xen/xen-backend.c
@@ -98,9 +98,9 @@ static void xen_backend_list_remove(XenBackendInstance
*backend)
void xen_backend_device_create(XenBus *xenbus, const char *type,
const char *name, QDict *opts, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
const XenBackendImpl *impl = xen_backend_table_lookup(type);
XenBackendInstance *backend;
- Error *local_error = NULL;
if (!impl) {
return;
@@ -110,9 +110,8 @@ void xen_backend_device_create(XenBus *xenbus, const char
*type,
backend->xenbus = xenbus;
backend->name = g_strdup(name);
- impl->create(backend, opts, &local_error);
- if (local_error) {
- error_propagate(errp, local_error);
+ impl->create(backend, opts, errp);
+ if (*errp) {
g_free(backend->name);
g_free(backend);
return;
diff --git a/hw/xen/xen-bus.c b/hw/xen/xen-bus.c
index 18237b34ea..97259c964b 100644
--- a/hw/xen/xen-bus.c
+++ b/hw/xen/xen-bus.c
@@ -53,9 +53,9 @@ static char *xen_device_get_frontend_path(XenDevice *xendev)
static void xen_device_unplug(XenDevice *xendev, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
XenBus *xenbus = XEN_BUS(qdev_get_parent_bus(DEVICE(xendev)));
const char *type = object_get_typename(OBJECT(xendev));
- Error *local_err = NULL;
xs_transaction_t tid;
trace_xen_device_unplug(type, xendev->name);
@@ -69,14 +69,14 @@ again:
}
xs_node_printf(xenbus->xsh, tid, xendev->backend_path, "online",
- &local_err, "%u", 0);
- if (local_err) {
+ errp, "%u", 0);
+ if (*errp) {
goto abort;
}
xs_node_printf(xenbus->xsh, tid, xendev->backend_path, "state",
- &local_err, "%u", XenbusStateClosing);
- if (local_err) {
+ errp, "%u", XenbusStateClosing);
+ if (*errp) {
goto abort;
}
@@ -96,7 +96,6 @@ abort:
* from ending the transaction.
*/
xs_transaction_end(xenbus->xsh, tid, true);
- error_propagate(errp, local_err);
}
static void xen_bus_print_dev(Monitor *mon, DeviceState *dev, int indent)
@@ -205,15 +204,13 @@ static XenWatch *watch_list_add(XenWatchList *watch_list,
const char *node,
const char *key, XenWatchHandler handler,
void *opaque, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
XenWatch *watch = new_watch(node, key, handler, opaque);
- Error *local_err = NULL;
notifier_list_add(&watch_list->notifiers, &watch->notifier);
- xs_node_watch(watch_list->xsh, node, key, watch->token, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
-
+ xs_node_watch(watch_list->xsh, node, key, watch->token, errp);
+ if (*errp) {
notifier_remove(&watch->notifier);
free_watch(watch);
@@ -255,11 +252,11 @@ static void xen_bus_backend_create(XenBus *xenbus, const
char *type,
const char *name, char *path,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
xs_transaction_t tid;
char **key;
QDict *opts;
unsigned int i, n;
- Error *local_err = NULL;
trace_xen_bus_backend_create(type, path);
@@ -314,13 +311,11 @@ again:
return;
}
- xen_backend_device_create(xenbus, type, name, opts, &local_err);
+ xen_backend_device_create(xenbus, type, name, opts, errp);
qobject_unref(opts);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "failed to create '%s' device '%s': ",
- type, name);
+ if (*errp) {
+ error_prepend(errp, "failed to create '%s' device '%s': ", type, name);
}
}
@@ -692,9 +687,9 @@ static void xen_device_remove_watch(XenDevice *xendev,
XenWatch *watch,
static void xen_device_backend_create(XenDevice *xendev, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
XenBus *xenbus = XEN_BUS(qdev_get_parent_bus(DEVICE(xendev)));
struct xs_permissions perms[2];
- Error *local_err = NULL;
xendev->backend_path = xen_device_get_backend_path(xendev);
@@ -706,30 +701,27 @@ static void xen_device_backend_create(XenDevice *xendev,
Error **errp)
g_assert(xenbus->xsh);
xs_node_create(xenbus->xsh, XBT_NULL, xendev->backend_path, perms,
- ARRAY_SIZE(perms), &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "failed to create backend: ");
+ ARRAY_SIZE(perms), errp);
+ if (*errp) {
+ error_prepend(errp, "failed to create backend: ");
return;
}
xendev->backend_state_watch =
xen_device_add_watch(xendev, xendev->backend_path,
"state", xen_device_backend_changed,
- &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "failed to watch backend state: ");
+ errp);
+ if (*errp) {
+ error_prepend(errp, "failed to watch backend state: ");
return;
}
xendev->backend_online_watch =
xen_device_add_watch(xendev, xendev->backend_path,
"online", xen_device_backend_changed,
- &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "failed to watch backend online: ");
+ errp);
+ if (*errp) {
+ error_prepend(errp, "failed to watch backend online: ");
return;
}
}
@@ -866,9 +858,9 @@ static bool xen_device_frontend_exists(XenDevice *xendev)
static void xen_device_frontend_create(XenDevice *xendev, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
XenBus *xenbus = XEN_BUS(qdev_get_parent_bus(DEVICE(xendev)));
struct xs_permissions perms[2];
- Error *local_err = NULL;
xendev->frontend_path = xen_device_get_frontend_path(xendev);
@@ -885,20 +877,18 @@ static void xen_device_frontend_create(XenDevice *xendev,
Error **errp)
g_assert(xenbus->xsh);
xs_node_create(xenbus->xsh, XBT_NULL, xendev->frontend_path, perms,
- ARRAY_SIZE(perms), &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "failed to create frontend: ");
+ ARRAY_SIZE(perms), errp);
+ if (*errp) {
+ error_prepend(errp, "failed to create frontend: ");
return;
}
}
xendev->frontend_state_watch =
xen_device_add_watch(xendev, xendev->frontend_path, "state",
- xen_device_frontend_changed, &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "failed to watch frontend state: ");
+ xen_device_frontend_changed, errp);
+ if (*errp) {
+ error_prepend(errp, "failed to watch frontend state: ");
}
}
@@ -1247,11 +1237,11 @@ static void xen_device_exit(Notifier *n, void *data)
static void xen_device_realize(DeviceState *dev, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
XenDevice *xendev = XEN_DEVICE(dev);
XenDeviceClass *xendev_class = XEN_DEVICE_GET_CLASS(xendev);
XenBus *xenbus = XEN_BUS(qdev_get_parent_bus(DEVICE(xendev)));
const char *type = object_get_typename(OBJECT(xendev));
- Error *local_err = NULL;
if (xendev->frontend_id == DOMID_INVALID) {
xendev->frontend_id = xen_domid;
@@ -1267,10 +1257,9 @@ static void xen_device_realize(DeviceState *dev, Error
**errp)
goto unrealize;
}
- xendev->name = xendev_class->get_name(xendev, &local_err);
- if (local_err) {
- error_propagate_prepend(errp, local_err,
- "failed to get device name: ");
+ xendev->name = xendev_class->get_name(xendev, errp);
+ if (*errp) {
+ error_prepend(errp, "failed to get device name: ");
goto unrealize;
}
@@ -1293,22 +1282,19 @@ static void xen_device_realize(DeviceState *dev, Error
**errp)
xendev->feature_grant_copy =
(xengnttab_grant_copy(xendev->xgth, 0, NULL) == 0);
- xen_device_backend_create(xendev, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ xen_device_backend_create(xendev, errp);
+ if (*errp) {
goto unrealize;
}
- xen_device_frontend_create(xendev, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ xen_device_frontend_create(xendev, errp);
+ if (*errp) {
goto unrealize;
}
if (xendev_class->realize) {
- xendev_class->realize(xendev, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ xendev_class->realize(xendev, errp);
+ if (*errp) {
goto unrealize;
}
}
diff --git a/hw/xen/xen-host-pci-device.c b/hw/xen/xen-host-pci-device.c
index 1b44dcafaf..02379c341c 100644
--- a/hw/xen/xen-host-pci-device.c
+++ b/hw/xen/xen-host-pci-device.c
@@ -333,8 +333,8 @@ void xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t
domain,
uint8_t bus, uint8_t dev, uint8_t func,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
unsigned int v;
- Error *err = NULL;
d->config_fd = -1;
d->domain = domain;
@@ -342,36 +342,36 @@ void xen_host_pci_device_get(XenHostPCIDevice *d,
uint16_t domain,
d->dev = dev;
d->func = func;
- xen_host_pci_config_open(d, &err);
- if (err) {
+ xen_host_pci_config_open(d, errp);
+ if (*errp) {
goto error;
}
- xen_host_pci_get_resource(d, &err);
- if (err) {
+ xen_host_pci_get_resource(d, errp);
+ if (*errp) {
goto error;
}
- xen_host_pci_get_hex_value(d, "vendor", &v, &err);
- if (err) {
+ xen_host_pci_get_hex_value(d, "vendor", &v, errp);
+ if (*errp) {
goto error;
}
d->vendor_id = v;
- xen_host_pci_get_hex_value(d, "device", &v, &err);
- if (err) {
+ xen_host_pci_get_hex_value(d, "device", &v, errp);
+ if (*errp) {
goto error;
}
d->device_id = v;
- xen_host_pci_get_dec_value(d, "irq", &v, &err);
- if (err) {
+ xen_host_pci_get_dec_value(d, "irq", &v, errp);
+ if (*errp) {
goto error;
}
d->irq = v;
- xen_host_pci_get_hex_value(d, "class", &v, &err);
- if (err) {
+ xen_host_pci_get_hex_value(d, "class", &v, errp);
+ if (*errp) {
goto error;
}
d->class_code = v;
@@ -381,7 +381,6 @@ void xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t
domain,
return;
error:
- error_propagate(errp, err);
if (d->config_fd >= 0) {
close(d->config_fd);
diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
index b91082cb8b..f57b81588e 100644
--- a/hw/xen/xen_pt.c
+++ b/hw/xen/xen_pt.c
@@ -767,12 +767,12 @@ static void xen_pt_destroy(PCIDevice *d) {
static void xen_pt_realize(PCIDevice *d, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
XenPCIPassthroughState *s = XEN_PT_DEVICE(d);
int i, rc = 0;
uint8_t machine_irq = 0, scratch;
uint16_t cmd = 0;
int pirq = XEN_PT_UNASSIGNED_PIRQ;
- Error *err = NULL;
/* register real device */
XEN_PT_LOG(d, "Assigning real physical device %02x:%02x.%d"
@@ -783,10 +783,9 @@ static void xen_pt_realize(PCIDevice *d, Error **errp)
xen_host_pci_device_get(&s->real_device,
s->hostaddr.domain, s->hostaddr.bus,
s->hostaddr.slot, s->hostaddr.function,
- &err);
- if (err) {
- error_append_hint(&err, "Failed to \"open\" the real pci device");
- error_propagate(errp, err);
+ errp);
+ if (*errp) {
+ error_append_hint(errp, "Failed to \"open\" the real pci device");
return;
}
@@ -813,11 +812,10 @@ static void xen_pt_realize(PCIDevice *d, Error **errp)
return;
}
- xen_pt_setup_vga(s, &s->real_device, &err);
- if (err) {
- error_append_hint(&err, "Setup VGA BIOS of passthrough"
- " GFX failed");
- error_propagate(errp, err);
+ xen_pt_setup_vga(s, &s->real_device, errp);
+ if (*errp) {
+ error_append_hint(errp, "Setup VGA BIOS of passthrough"
+ " GFX failed");
xen_host_pci_device_put(&s->real_device);
return;
}
@@ -830,10 +828,9 @@ static void xen_pt_realize(PCIDevice *d, Error **errp)
xen_pt_register_regions(s, &cmd);
/* reinitialize each config register to be emulated */
- xen_pt_config_init(s, &err);
- if (err) {
- error_append_hint(&err, "PCI Config space initialisation failed");
- error_propagate(errp, err);
+ xen_pt_config_init(s, errp);
+ if (*errp) {
+ error_append_hint(errp, "PCI Config space initialisation failed");
rc = -1;
goto err_out;
}
diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
index 31ec5add1d..af3fbd1bfb 100644
--- a/hw/xen/xen_pt_config_init.c
+++ b/hw/xen/xen_pt_config_init.c
@@ -2008,8 +2008,8 @@ static void xen_pt_config_reg_init(XenPCIPassthroughState
*s,
void xen_pt_config_init(XenPCIPassthroughState *s, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
int i, rc;
- Error *err = NULL;
QLIST_INIT(&s->reg_grps);
@@ -2052,10 +2052,9 @@ void xen_pt_config_init(XenPCIPassthroughState *s, Error
**errp)
reg_grp_offset,
®_grp_entry->size);
if (rc < 0) {
- error_setg(&err, "Failed to initialize %d/%zu, type = 0x%x,"
+ error_setg(errp, "Failed to initialize %d/%zu, type = 0x%x,"
" rc: %d", i, ARRAY_SIZE(xen_pt_emu_reg_grps),
xen_pt_emu_reg_grps[i].grp_type, rc);
- error_propagate(errp, err);
xen_pt_config_delete(s);
return;
}
@@ -2068,13 +2067,14 @@ void xen_pt_config_init(XenPCIPassthroughState *s,
Error **errp)
/* initialize capability register */
for (j = 0; regs->size != 0; j++, regs++) {
- xen_pt_config_reg_init(s, reg_grp_entry, regs, &err);
- if (err) {
- error_append_hint(&err, "Failed to init register %d"
- " offsets 0x%x in grp_type = 0x%x (%d/%zu)", j,
- regs->offset, xen_pt_emu_reg_grps[i].grp_type,
- i, ARRAY_SIZE(xen_pt_emu_reg_grps));
- error_propagate(errp, err);
+ xen_pt_config_reg_init(s, reg_grp_entry, regs, errp);
+ if (*errp) {
+ error_append_hint(errp, "Failed to init register %d"
+ " offsets 0x%x in grp_type = 0x%x
(%d/%zu)",
+ j,
+ regs->offset,
+ xen_pt_emu_reg_grps[i].grp_type,
+ i, ARRAY_SIZE(xen_pt_emu_reg_grps));
xen_pt_config_delete(s);
return;
}
--
2.21.0
- Re: [PATCH v8 02/10] scripts: add coccinelle script to use auto propagated errp, (continued)
Re: [PATCH v8 02/10] scripts: add coccinelle script to use auto propagated errp, Markus Armbruster, 2020/03/11
[PATCH v8 01/10] error: auto propagated local_err, Vladimir Sementsov-Ogievskiy, 2020/03/06
[PATCH v8 10/10] xen: introduce ERRP_AUTO_PROPAGATE,
Vladimir Sementsov-Ogievskiy <=
Re: [PATCH v8 00/10] error: auto propagated local_err part I, Markus Armbruster, 2020/03/06