[PATCH 4/4] qemu: command: make qemuBuildVirtioOptionsStr void

[Bjoern Walk <bwalk@xxxxxxxxxxxxx>]

Now that qemuBuildVirtioOptionsStr can not fail anymore, remove its
return value and make it void.

Signed-off-by: Bjoern Walk <bwalk@xxxxxxxxxxxxx>
---
 src/qemu/qemu_command.c | 38 +++++++++++++-------------------------
 1 file changed, 13 insertions(+), 25 deletions(-)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index ca9d3f10..169a418f 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -586,12 +586,12 @@ qemuBuildVirtioDevStr(virBufferPtr buf,
     return 0;
 }
 
-static int
+static void
 qemuBuildVirtioOptionsStr(virBufferPtr buf,
                           virDomainVirtioOptionsPtr virtio)
 {
     if (!virtio)
-        return 0;
+        return;
 
     if (virtio->iommu != VIR_TRISTATE_SWITCH_ABSENT) {
         virBufferAsprintf(buf, ",iommu_platform=%s",
@@ -605,8 +605,6 @@ qemuBuildVirtioOptionsStr(virBufferPtr buf,
         virBufferAsprintf(buf, ",packed=%s",
                           virTristateSwitchTypeToString(virtio->packed));
     }
-
-    return 0;
 }
 
 static int
@@ -2131,8 +2129,7 @@ qemuBuildDiskDeviceStr(const virDomainDef *def,
             virBufferAsprintf(&opt, ",num-queues=%u", disk->queues);
         }
 
-        if (qemuBuildVirtioOptionsStr(&opt, disk->virtio) < 0)
-            return NULL;
+        qemuBuildVirtioOptionsStr(&opt, disk->virtio);
 
         if (qemuBuildDeviceAddressStr(&opt, def, &disk->info, qemuCaps) < 0)
             return NULL;
@@ -2596,8 +2593,7 @@ qemuBuildVHostUserFsCommandLine(virCommandPtr cmd,
         virBufferAsprintf(&opt, ",queue-size=%llu", fs->queue_size);
     virBufferAddLit(&opt, ",tag=");
     virQEMUBuildBufferEscapeComma(&opt, fs->dst);
-    if (qemuBuildVirtioOptionsStr(&opt, fs->virtio) < 0)
-        return -1;
+    qemuBuildVirtioOptionsStr(&opt, fs->virtio);
 
     if (qemuBuildDeviceAddressStr(&opt, def, &fs->info, priv->qemuCaps) < 0)
         return -1;
@@ -2666,8 +2662,7 @@ qemuBuildFSDevStr(const virDomainDef *def,
     virBufferAddLit(&opt, ",mount_tag=");
     virQEMUBuildBufferEscapeComma(&opt, fs->dst);
 
-    if (qemuBuildVirtioOptionsStr(&opt, fs->virtio) < 0)
-        return NULL;
+    qemuBuildVirtioOptionsStr(&opt, fs->virtio);
 
     if (qemuBuildDeviceAddressStr(&opt, def, &fs->info, qemuCaps) < 0)
         return NULL;
@@ -2898,8 +2893,7 @@ qemuBuildControllerDevStr(const virDomainDef *domainDef,
                                   def->iothread);
             }
 
-            if (qemuBuildVirtioOptionsStr(&buf, def->virtio) < 0)
-                return -1;
+            qemuBuildVirtioOptionsStr(&buf, def->virtio);
             break;
         case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSILOGIC:
             virBufferAddLit(&buf, "lsi");
@@ -2945,8 +2939,7 @@ qemuBuildControllerDevStr(const virDomainDef *domainDef,
             virBufferAsprintf(&buf, ",vectors=%d",
                               def->opts.vioserial.vectors);
         }
-        if (qemuBuildVirtioOptionsStr(&buf, def->virtio) < 0)
-            return -1;
+        qemuBuildVirtioOptionsStr(&buf, def->virtio);
         break;
 
     case VIR_DOMAIN_CONTROLLER_TYPE_CCID:
@@ -3896,9 +3889,8 @@ qemuBuildNicDevStr(virDomainDefPtr def,
         return NULL;
     if (bootindex)
         virBufferAsprintf(&buf, ",bootindex=%u", bootindex);
-    if (usingVirtio &&
-        qemuBuildVirtioOptionsStr(&buf, net->virtio) < 0)
-        return NULL;
+    if (usingVirtio)
+        qemuBuildVirtioOptionsStr(&buf, net->virtio);
 
     return virBufferContentAndReset(&buf);
 }
@@ -4139,8 +4131,7 @@ qemuBuildMemballoonCommandLine(virCommandPtr cmd,
                           virTristateSwitchTypeToString(def->memballoon->autodeflate));
     }
 
-    if (qemuBuildVirtioOptionsStr(&buf, def->memballoon->virtio) < 0)
-        return -1;
+    qemuBuildVirtioOptionsStr(&buf, def->memballoon->virtio);
 
     if (qemuCommandAddExtDevice(cmd, &def->memballoon->info) < 0)
         return -1;
@@ -4231,8 +4222,7 @@ qemuBuildVirtioInputDevStr(const virDomainDef *def,
     if (qemuBuildDeviceAddressStr(&buf, def, &dev->info, qemuCaps) < 0)
         return NULL;
 
-    if (qemuBuildVirtioOptionsStr(&buf, dev->virtio) < 0)
-        return NULL;
+    qemuBuildVirtioOptionsStr(&buf, dev->virtio);
 
     return virBufferContentAndReset(&buf);
 }
@@ -4542,8 +4532,7 @@ qemuBuildDeviceVideoStr(const virDomainDef *def,
     if (qemuBuildDeviceAddressStr(&buf, def, &video->info, qemuCaps) < 0)
         return NULL;
 
-    if (qemuBuildVirtioOptionsStr(&buf, video->virtio) < 0)
-        return NULL;
+    qemuBuildVirtioOptionsStr(&buf, video->virtio);
 
     return virBufferContentAndReset(&buf);
 }
@@ -5758,8 +5747,7 @@ qemuBuildRNGDevStr(const virDomainDef *def,
             virBufferAddLit(&buf, ",period=1000");
     }
 
-    if (qemuBuildVirtioOptionsStr(&buf, dev->virtio) < 0)
-        return NULL;
+    qemuBuildVirtioOptionsStr(&buf, dev->virtio);
 
     if (qemuBuildDeviceAddressStr(&buf, def, &dev->info, qemuCaps) < 0)
         return NULL;
-- 
2.24.1