qapi: Use returned bool to check for failure (again)

Commit 012d4c9 changed the visitor functions taking Error ** to return bool instead of void, and the commits following it used the new return value to simplify error checking. Since then a few more uses in need of the same treatment crept in. Do that. All pretty mechanical except for * balloon_stats_get_all() This is basically the same transformation commit 012d4c9 applied to the virtual walk example in include/qapi/visitor.h. * set_max_queue_size() Additionally replace "goto end of function" by return. Signed-off-by: Markus Armbruster <[email protected]> Message-Id: <[email protected]> Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
devos50 · Dec 14, 2022 · d1c81c3 · d1c81c3
1 parent f560eb1
commit d1c81c3
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Showing 8 changed files with 21 additions and 52 deletions.
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
@@ -3586,17 +3586,14 @@ static void kvm_set_dirty_ring_size(Object *obj, Visitor *v,
                                     Error **errp)
 {
     KVMState *s = KVM_STATE(obj);
-    Error *error = NULL;
     uint32_t value;
 
     if (s->fd != -1) {
         error_setg(errp, "Cannot set properties after the accelerator has been initialized");
         return;
     }
 
-    visit_type_uint32(v, name, &value, &error);
-    if (error) {
-        error_propagate(errp, error);
+    if (!visit_type_uint32(v, name, &value, errp)) {
         return;
     }
     if (value & (value - 1)) {

diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
@@ -679,14 +679,11 @@ static void set_reserved_region(Object *obj, Visitor *v, const char *name,
 {
     Property *prop = opaque;
     ReservedRegion *rr = object_field_prop_ptr(obj, prop);
-    Error *local_err = NULL;
     const char *endptr;
     char *str;
     int ret;
 
-    visit_type_str(v, name, &str, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
+    if (!visit_type_str(v, name, &str, errp)) {
         return;
     }
 

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
@@ -1782,12 +1782,9 @@ static void pc_machine_set_max_fw_size(Object *obj, Visitor *v,
                                        Error **errp)
 {
     PCMachineState *pcms = PC_MACHINE(obj);
-    Error *error = NULL;
     uint64_t value;
 
-    visit_type_size(v, name, &value, &error);
-    if (error) {
-        error_propagate(errp, error);
+    if (!visit_type_size(v, name, &value, errp)) {
         return;
     }
 

diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
@@ -241,36 +241,34 @@ static void balloon_stats_poll_cb(void *opaque)
 static void balloon_stats_get_all(Object *obj, Visitor *v, const char *name,
                                   void *opaque, Error **errp)
 {
-    Error *err = NULL;
     VirtIOBalloon *s = VIRTIO_BALLOON(obj);
+    bool ok = false;
     int i;
 
-    if (!visit_start_struct(v, name, NULL, 0, &err)) {
-        goto out;
+    if (!visit_start_struct(v, name, NULL, 0, errp)) {
+        return;
     }
-    if (!visit_type_int(v, "last-update", &s->stats_last_update, &err)) {
+    if (!visit_type_int(v, "last-update", &s->stats_last_update, errp)) {
         goto out_end;
     }
 
-    if (!visit_start_struct(v, "stats", NULL, 0, &err)) {
+    if (!visit_start_struct(v, "stats", NULL, 0, errp)) {
         goto out_end;
     }
     for (i = 0; i < VIRTIO_BALLOON_S_NR; i++) {
-        if (!visit_type_uint64(v, balloon_stat_names[i], &s->stats[i], &err)) {
+        if (!visit_type_uint64(v, balloon_stat_names[i], &s->stats[i], errp)) {
             goto out_nested;
         }
     }
-    visit_check_struct(v, &err);
+    ok = visit_check_struct(v, errp);
 out_nested:
     visit_end_struct(v, NULL);
 
-    if (!err) {
-        visit_check_struct(v, &err);
+    if (ok) {
+        visit_check_struct(v, errp);
     }
 out_end:
     visit_end_struct(v, NULL);
-out:
-    error_propagate(errp, err);
 }
 
 static void balloon_stats_get_poll_interval(Object *obj, Visitor *v,

diff --git a/hw/virtio/virtio-mem.c b/hw/virtio/virtio-mem.c
@@ -1094,12 +1094,9 @@ static void virtio_mem_set_requested_size(Object *obj, Visitor *v,
                                           Error **errp)
 {
     VirtIOMEM *vmem = VIRTIO_MEM(obj);
-    Error *err = NULL;
     uint64_t value;
 
-    visit_type_size(v, name, &value, &err);
-    if (err) {
-        error_propagate(errp, err);
+    if (!visit_type_size(v, name, &value, errp)) {
         return;
     }
 
@@ -1159,17 +1156,14 @@ static void virtio_mem_set_block_size(Object *obj, Visitor *v, const char *name,
                                       void *opaque, Error **errp)
 {
     VirtIOMEM *vmem = VIRTIO_MEM(obj);
-    Error *err = NULL;
     uint64_t value;
 
     if (DEVICE(obj)->realized) {
         error_setg(errp, "'%s' cannot be changed", name);
         return;
     }
 
-    visit_type_size(v, name, &value, &err);
-    if (err) {
-        error_propagate(errp, err);
+    if (!visit_type_size(v, name, &value, errp)) {
         return;
     }
 

diff --git a/net/colo-compare.c b/net/colo-compare.c
@@ -1135,22 +1135,17 @@ static void set_max_queue_size(Object *obj, Visitor *v,
                                const char *name, void *opaque,
                                Error **errp)
 {
-    Error *local_err = NULL;
     uint64_t value;
 
-    visit_type_uint64(v, name, &value, &local_err);
-    if (local_err) {
-        goto out;
+    if (!visit_type_uint64(v, name, &value, errp)) {
+        return;
     }
     if (!value) {
-        error_setg(&local_err, "Property '%s.%s' requires a positive value",
+        error_setg(errp, "Property '%s.%s' requires a positive value",
                    object_get_typename(obj), name);
-        goto out;
+        return;
     }
     max_queue_size = value;
-
-out:
-    error_propagate(errp, local_err);
 }
 
 static void compare_pri_rs_finalize(SocketReadState *pri_rs)

diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
@@ -5689,17 +5689,14 @@ static void kvm_arch_set_notify_window(Object *obj, Visitor *v,
                                        Error **errp)
 {
     KVMState *s = KVM_STATE(obj);
-    Error *error = NULL;
     uint32_t value;
 
     if (s->fd != -1) {
         error_setg(errp, "Cannot set properties after the accelerator has been initialized");
         return;
     }
 
-    visit_type_uint32(v, name, &value, &error);
-    if (error) {
-        error_propagate(errp, error);
+    if (!visit_type_uint32(v, name, &value, errp)) {
         return;
     }
 

diff --git a/util/thread-context.c b/util/thread-context.c
@@ -90,16 +90,13 @@ static void thread_context_set_cpu_affinity(Object *obj, Visitor *v,
     uint16List *l, *host_cpus = NULL;
     unsigned long *bitmap = NULL;
     int nbits = 0, ret;
-    Error *err = NULL;
 
     if (tc->init_cpu_bitmap) {
         error_setg(errp, "Mixing CPU and node affinity not supported");
         return;
     }
 
-    visit_type_uint16List(v, name, &host_cpus, &err);
-    if (err) {
-        error_propagate(errp, err);
+    if (!visit_type_uint16List(v, name, &host_cpus, errp)) {
         return;
     }
 
@@ -178,17 +175,14 @@ static void thread_context_set_node_affinity(Object *obj, Visitor *v,
     uint16List *l, *host_nodes = NULL;
     unsigned long *bitmap = NULL;
     struct bitmask *tmp_cpus;
-    Error *err = NULL;
     int ret, i;
 
     if (tc->init_cpu_bitmap) {
         error_setg(errp, "Mixing CPU and node affinity not supported");
         return;
     }
 
-    visit_type_uint16List(v, name, &host_nodes, &err);
-    if (err) {
-        error_propagate(errp, err);
+    if (!visit_type_uint16List(v, name, &host_nodes, errp)) {
         return;
     }