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 <kw...@redhat.com>
Reported-by: Greg Kurz <gr...@kaod.org>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
hw/mem/nvdimm.c | 25 +++++++++++--------------
1 file changed, 11 insertions(+), 14 deletions(-)
diff --git a/hw/mem/nvdimm.c b/hw/mem/nvdimm.c
index 375f9a588a..e84d860688 100644
--- a/hw/mem/nvdimm.c
+++ b/hw/mem/nvdimm.c
@@ -44,29 +44,27 @@ static void nvdimm_get_label_size(Object *obj, Visitor *v,
const char *name,
static void nvdimm_set_label_size(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
NVDIMMDevice *nvdimm = NVDIMM(obj);
- Error *local_err = NULL;
uint64_t value;
if (nvdimm->nvdimm_mr) {
- error_setg(&local_err, "cannot change property value");
- goto out;
+ error_setg(errp, "cannot change property value");
+ return;
}
- visit_type_size(v, name, &value, &local_err);
- if (local_err) {
- goto out;
+ visit_type_size(v, name, &value, errp);
+ if (*errp) {
+ return;
}
if (value < MIN_NAMESPACE_LABEL_SIZE) {
- error_setg(&local_err, "Property '%s.%s' (0x%" PRIx64 ") is required"
+ error_setg(errp, "Property '%s.%s' (0x%" PRIx64 ") is required"
" at least 0x%lx", object_get_typename(obj),
name, value, MIN_NAMESPACE_LABEL_SIZE);
- goto out;
+ return;
}
nvdimm->label_size = value;
-out:
- error_propagate(errp, local_err);
}
static void nvdimm_init(Object *obj)
@@ -126,13 +124,12 @@ static void nvdimm_prepare_memory_region(NVDIMMDevice
*nvdimm, Error **errp)
static MemoryRegion *nvdimm_md_get_memory_region(MemoryDeviceState *md,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
NVDIMMDevice *nvdimm = NVDIMM(md);
- Error *local_err = NULL;
if (!nvdimm->nvdimm_mr) {
- nvdimm_prepare_memory_region(nvdimm, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ nvdimm_prepare_memory_region(nvdimm, errp);
+ if (*errp) {
return NULL;
}
}
--
2.21.0
