@@ -53,9 +53,9 @@ static void rng_backend_complete(UserCreatable *uc, Error **errp)
static void rng_backend_prop_set_opened(Object *obj, bool value, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
RngBackend *s = RNG_BACKEND(obj);
RngBackendClass *k = RNG_BACKEND_GET_CLASS(s);
- Error *local_err = NULL;
if (value == s->opened) {
return;
@@ -67,9 +67,8 @@ static void rng_backend_prop_set_opened(Object *obj, bool value, Error **errp)
}
if (k->opened) {
- k->opened(s, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ k->opened(s, errp);
+ if (*errp) {
return;
}
}
@@ -174,9 +174,9 @@ static void virtio_rng_set_status(VirtIODevice *vdev, uint8_t status)
static void virtio_rng_device_realize(DeviceState *dev, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VirtIORNG *vrng = VIRTIO_RNG(dev);
- Error *local_err = NULL;
if (vrng->conf.period_ms <= 0) {
error_setg(errp, "'period' parameter expects a positive integer");
@@ -195,9 +195,8 @@ static void virtio_rng_device_realize(DeviceState *dev, Error **errp)
Object *default_backend = object_new(TYPE_RNG_BUILTIN);
user_creatable_complete(USER_CREATABLE(default_backend),
- &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ errp);
+ if (*errp) {
object_unref(default_backend);
return;
}
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 <kwolf@redhat.com> Reported-by: Greg Kurz <groug@kaod.org> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> --- backends/rng.c | 7 +++---- hw/virtio/virtio-rng.c | 7 +++---- 2 files changed, 6 insertions(+), 8 deletions(-)