Miscellaneous patches for 2022-12-14

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Merge tag 'pull-misc-2022-12-14' of https://repo.or.cz/qemu/armbru into staging

Miscellaneous patches for 2022-12-14

# gpg: Signature made Wed 14 Dec 2022 15:23:02 GMT
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* tag 'pull-misc-2022-12-14' of https://repo.or.cz/qemu/armbru:
  ppc4xx_sdram: Simplify sdram_ddr_size() to return
  block/vmdk: Simplify vmdk_co_create() to return directly
  cleanup: Tweak and re-run return_directly.cocci
  io: Tidy up fat-fingered parameter name
  qapi: Use returned bool to check for failure (again)
  sockets: Use ERRP_GUARD() where obviously appropriate
  qemu-config: Use ERRP_GUARD() where obviously appropriate
  qemu-config: Make config_parse_qdict() return bool
  monitor: Use ERRP_GUARD() in monitor_init()
  monitor: Simplify monitor_fd_param()'s error handling
  error: Move ERRP_GUARD() to the beginning of the function
  error: Drop a few superfluous ERRP_GUARD()
  error: Drop some obviously superfluous error_propagate()
  Drop more useless casts from void * to pointer

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/virtio/vhost-user.c

@@ -2533,11 +2533,7 @@ vhost_user_crypto_close_session(struct vhost_dev *dev, uint64_t session_id)
 static bool vhost_user_mem_section_filter(struct vhost_dev *dev,
                                           MemoryRegionSection *section)
 {
-    bool result;
-
-    result = memory_region_get_fd(section->mr) >= 0;
-
-    return result;
+    return memory_region_get_fd(section->mr) >= 0;
 }
 
 static int vhost_user_get_inflight_fd(struct vhost_dev *dev,

hw/virtio/vhost-vdpa.c

@@ -963,6 +963,7 @@ static bool vhost_vdpa_svq_map_rings(struct vhost_dev *dev,
                                      struct vhost_vring_addr *addr,
                                      Error **errp)
 {
+    ERRP_GUARD();
     DMAMap device_region, driver_region;
     struct vhost_vring_addr svq_addr;
     struct vhost_vdpa *v = dev->opaque;
@@ -971,7 +972,6 @@ static bool vhost_vdpa_svq_map_rings(struct vhost_dev *dev,
     size_t avail_offset;
     bool ok;
 
-    ERRP_GUARD();
     vhost_svq_get_vring_addr(svq, &svq_addr);
 
     driver_region = (DMAMap) {

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,

hw/virtio/virtio-iommu.c

@@ -775,8 +775,7 @@ static void virtio_iommu_handle_command(VirtIODevice *vdev, VirtQueue *vq)
             output_size = s->config.probe_size + sizeof(tail);
             buf = g_malloc0(output_size);
 
-            ptail = (struct virtio_iommu_req_tail *)
-                        (buf + s->config.probe_size);
+            ptail = buf + s->config.probe_size;
             ptail->status = virtio_iommu_handle_probe(s, iov, iov_cnt, buf);
             break;
         }

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;
     }
 
@@ -1159,7 +1156,6 @@ 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) {
@@ -1167,9 +1163,7 @@ static void virtio_mem_set_block_size(Object *obj, Visitor *v, const char *name,
         return;
     }
 
-    visit_type_size(v, name, &value, &err);
-    if (err) {
-        error_propagate(errp, err);
+    if (!visit_type_size(v, name, &value, errp)) {
         return;
     }