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author | Markus Armbruster <armbru@redhat.com> | 2020-07-07 18:06:01 +0200 |
---|---|---|
committer | Markus Armbruster <armbru@redhat.com> | 2020-07-10 15:18:08 +0200 |
commit | dcfe480544eef72d666cb1695624449e2c22da2d (patch) | |
tree | aaa611acd223064dd8ebc278d0998c2e3d29c080 /hw/mem | |
parent | 0c0e618d233e3249f6b60678a1b013a2c8d83339 (diff) | |
download | qemu-dcfe480544eef72d666cb1695624449e2c22da2d.zip qemu-dcfe480544eef72d666cb1695624449e2c22da2d.tar.gz qemu-dcfe480544eef72d666cb1695624449e2c22da2d.tar.bz2 |
error: Avoid unnecessary error_propagate() after error_setg()
Replace
error_setg(&err, ...);
error_propagate(errp, err);
by
error_setg(errp, ...);
Related pattern:
if (...) {
error_setg(&err, ...);
goto out;
}
...
out:
error_propagate(errp, err);
return;
When all paths to label out are that way, replace by
if (...) {
error_setg(errp, ...);
return;
}
and delete the label along with the error_propagate().
When we have at most one other path that actually needs to propagate,
and maybe one at the end that where propagation is unnecessary, e.g.
foo(..., &err);
if (err) {
goto out;
}
...
bar(..., &err);
out:
error_propagate(errp, err);
return;
move the error_propagate() to where it's needed, like
if (...) {
foo(..., &err);
error_propagate(errp, err);
return;
}
...
bar(..., errp);
return;
and transform the error_setg() as above.
In some places, the transformation results in obviously unnecessary
error_propagate(). The next few commits will eliminate them.
Bonus: the elimination of gotos will make later patches in this series
easier to review.
Candidates for conversion tracked down with this Coccinelle script:
@@
identifier err, errp;
expression list args;
@@
- error_setg(&err, args);
+ error_setg(errp, args);
... when != err
error_propagate(errp, err);
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200707160613.848843-34-armbru@redhat.com>
Diffstat (limited to 'hw/mem')
-rw-r--r-- | hw/mem/nvdimm.c | 17 | ||||
-rw-r--r-- | hw/mem/pc-dimm.c | 14 |
2 files changed, 15 insertions, 16 deletions
diff --git a/hw/mem/nvdimm.c b/hw/mem/nvdimm.c index 1fa976c..838ebcd 100644 --- a/hw/mem/nvdimm.c +++ b/hw/mem/nvdimm.c @@ -49,23 +49,22 @@ static void nvdimm_set_label_size(Object *obj, Visitor *v, const char *name, 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; } if (!visit_type_size(v, name, &value, &local_err)) { - goto out; + error_propagate(errp, local_err); + return; } if (value < MIN_NAMESPACE_LABEL_SIZE) { - error_setg(&local_err, "Property '%s.%s' (0x%" PRIx64 ") is required" - " at least 0x%lx", object_get_typename(obj), - name, value, MIN_NAMESPACE_LABEL_SIZE); - goto out; + error_setg(errp, "Property '%s.%s' (0x%" PRIx64 ") is required" + " at least 0x%lx", object_get_typename(obj), name, value, + MIN_NAMESPACE_LABEL_SIZE); + return; } nvdimm->label_size = value; -out: - error_propagate(errp, local_err); } static void nvdimm_get_uuid(Object *obj, Visitor *v, const char *name, diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c index 8a075fb..9d3f0b9 100644 --- a/hw/mem/pc-dimm.c +++ b/hw/mem/pc-dimm.c @@ -44,24 +44,24 @@ void pc_dimm_pre_plug(PCDIMMDevice *dimm, MachineState *machine, &error_abort); if ((slot < 0 || slot >= machine->ram_slots) && slot != PC_DIMM_UNASSIGNED_SLOT) { - error_setg(&local_err, "invalid slot number %d, valid range is [0-%" - PRIu64 "]", slot, machine->ram_slots - 1); - goto out; + error_setg(errp, + "invalid slot number %d, valid range is [0-%" PRIu64 "]", + slot, machine->ram_slots - 1); + return; } slot = pc_dimm_get_free_slot(slot == PC_DIMM_UNASSIGNED_SLOT ? NULL : &slot, machine->ram_slots, &local_err); if (local_err) { - goto out; + error_propagate(errp, local_err); + return; } object_property_set_int(OBJECT(dimm), PC_DIMM_SLOT_PROP, slot, &error_abort); trace_mhp_pc_dimm_assigned_slot(slot); memory_device_pre_plug(MEMORY_DEVICE(dimm), machine, legacy_align, - &local_err); -out: - error_propagate(errp, local_err); + errp); } void pc_dimm_plug(PCDIMMDevice *dimm, MachineState *machine, Error **errp) |