The following pattern occurs in the .bdrv_co_create_opts() methods of
parallels, qcow, qcow2, qed, vhdx and vpc:
qobj = qdict_crumple_for_keyval_qiv(qdict, errp);
qobject_unref(qdict);
qdict = qobject_to(QDict, qobj);
if (qdict == NULL) {
ret = -EINVAL;
goto done;
}
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
[...]
ret = 0;
done:
qobject_unref(qdict);
[...]
return ret;
If qobject_to() fails, we return failure without setting errp. That's
wrong. As far as I can tell, it cannot fail here. Clean it up
anyway, by removing the useless conversion.
Signed-off-by: Markus Armbruster <arm...@redhat.com>
---
block/parallels.c | 9 ++++-----
block/qcow.c | 9 ++++-----
block/qcow2.c | 9 ++++-----
block/qed.c | 9 ++++-----
block/vhdx.c | 9 ++++-----
block/vpc.c | 9 ++++-----
6 files changed, 24 insertions(+), 30 deletions(-)
diff --git a/block/parallels.c b/block/parallels.c
index 695899fc4b..ceb7a15d62 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -616,7 +616,7 @@ static int coroutine_fn parallels_co_create_opts(const char
*filename,
BlockdevCreateOptions *create_options = NULL;
Error *local_err = NULL;
BlockDriverState *bs = NULL;
- QDict *qdict = NULL;
+ QDict *qdict;
QObject *qobj;
Visitor *v;
int ret;
@@ -654,14 +654,13 @@ static int coroutine_fn parallels_co_create_opts(const
char *filename,
qdict_put_str(qdict, "file", bs->node_name);
qobj = qdict_crumple_for_keyval_qiv(qdict, errp);
- qobject_unref(qdict);
- qdict = qobject_to(QDict, qobj);
- if (qdict == NULL) {
+ if (!qobj) {
ret = -EINVAL;
goto done;
}
- v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
+ v = qobject_input_visitor_new_keyval(qobj);
+ qobject_unref(qobj);
visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
visit_free(v);
diff --git a/block/qcow.c b/block/qcow.c
index 860b058240..2f81f081fd 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -946,7 +946,7 @@ static int coroutine_fn qcow_co_create_opts(const char
*filename,
{
BlockdevCreateOptions *create_options = NULL;
BlockDriverState *bs = NULL;
- QDict *qdict = NULL;
+ QDict *qdict;
QObject *qobj;
Visitor *v;
const char *val;
@@ -998,14 +998,13 @@ static int coroutine_fn qcow_co_create_opts(const char
*filename,
qdict_put_str(qdict, "file", bs->node_name);
qobj = qdict_crumple_for_keyval_qiv(qdict, errp);
- qobject_unref(qdict);
- qdict = qobject_to(QDict, qobj);
- if (qdict == NULL) {
+ if (!qobj) {
ret = -EINVAL;
goto fail;
}
- v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
+ v = qobject_input_visitor_new_keyval(qobj);
+ qobject_unref(qobj);
visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
visit_free(v);
diff --git a/block/qcow2.c b/block/qcow2.c
index 0a27afa2ef..8c338661db 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3080,7 +3080,7 @@ static int coroutine_fn qcow2_co_create_opts(const char
*filename, QemuOpts *opt
Error **errp)
{
BlockdevCreateOptions *create_options = NULL;
- QDict *qdict = NULL;
+ QDict *qdict;
QObject *qobj;
Visitor *v;
BlockDriverState *bs = NULL;
@@ -3153,14 +3153,13 @@ static int coroutine_fn qcow2_co_create_opts(const char
*filename, QemuOpts *opt
/* Now get the QAPI type BlockdevCreateOptions */
qobj = qdict_crumple_for_keyval_qiv(qdict, errp);
- qobject_unref(qdict);
- qdict = qobject_to(QDict, qobj);
- if (qdict == NULL) {
+ if (!qobj) {
ret = -EINVAL;
goto finish;
}
- v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
+ v = qobject_input_visitor_new_keyval(qobj);
+ qobject_unref(qobj);
visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
visit_free(v);
diff --git a/block/qed.c b/block/qed.c
index 88fa36d409..fcec760b26 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -722,7 +722,7 @@ static int coroutine_fn bdrv_qed_co_create_opts(const char
*filename,
Error **errp)
{
BlockdevCreateOptions *create_options = NULL;
- QDict *qdict = NULL;
+ QDict *qdict;
QObject *qobj;
Visitor *v;
BlockDriverState *bs = NULL;
@@ -764,14 +764,13 @@ static int coroutine_fn bdrv_qed_co_create_opts(const
char *filename,
qdict_put_str(qdict, "file", bs->node_name);
qobj = qdict_crumple_for_keyval_qiv(qdict, errp);
- qobject_unref(qdict);
- qdict = qobject_to(QDict, qobj);
- if (qdict == NULL) {
+ if (!qobj) {
ret = -EINVAL;
goto fail;
}
- v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
+ v = qobject_input_visitor_new_keyval(qobj);
+ qobject_unref(qobj);
visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
visit_free(v);
diff --git a/block/vhdx.c b/block/vhdx.c
index 78b29d9fc7..f2aec3d2cd 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -1965,7 +1965,7 @@ static int coroutine_fn vhdx_co_create_opts(const char
*filename,
Error **errp)
{
BlockdevCreateOptions *create_options = NULL;
- QDict *qdict = NULL;
+ QDict *qdict;
QObject *qobj;
Visitor *v;
BlockDriverState *bs = NULL;
@@ -2006,14 +2006,13 @@ static int coroutine_fn vhdx_co_create_opts(const char
*filename,
qdict_put_str(qdict, "file", bs->node_name);
qobj = qdict_crumple_for_keyval_qiv(qdict, errp);
- qobject_unref(qdict);
- qdict = qobject_to(QDict, qobj);
- if (qdict == NULL) {
+ if (!qobj) {
ret = -EINVAL;
goto fail;
}
- v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
+ v = qobject_input_visitor_new_keyval(qobj);
+ qobject_unref(qobj);
visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
visit_free(v);
diff --git a/block/vpc.c b/block/vpc.c
index 16178e5a90..a9bb04149d 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -1081,7 +1081,7 @@ static int coroutine_fn vpc_co_create_opts(const char
*filename,
QemuOpts *opts, Error **errp)
{
BlockdevCreateOptions *create_options = NULL;
- QDict *qdict = NULL;
+ QDict *qdict;
QObject *qobj;
Visitor *v;
BlockDriverState *bs = NULL;
@@ -1120,14 +1120,13 @@ static int coroutine_fn vpc_co_create_opts(const char
*filename,
qdict_put_str(qdict, "file", bs->node_name);
qobj = qdict_crumple_for_keyval_qiv(qdict, errp);
- qobject_unref(qdict);
- qdict = qobject_to(QDict, qobj);
- if (qdict == NULL) {
+ if (!qobj) {
ret = -EINVAL;
goto fail;
}
- v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
+ v = qobject_input_visitor_new_keyval(qobj);
+ qobject_unref(qobj);
visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
visit_free(v);
--
2.17.1
