diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index d111ccd3d4..925d2b1f2a 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -6803,10 +6803,10 @@ qemuDomainDetachDeviceLive(virDomainObjPtr vm,
         ret = qemuDomainDetachLease(driver, vm, dev->data.lease);
         break;
     case VIR_DOMAIN_DEVICE_NET:
-        ret = qemuDomainDetachNetDevice(dom->conn, driver, vm, dev);
+        ret = qemuDomainDetachNetDevice(driver, vm, dev);
         break;
     case VIR_DOMAIN_DEVICE_HOSTDEV:
-        ret = qemuDomainDetachHostDevice(dom->conn, driver, vm, dev);
+        ret = qemuDomainDetachHostDevice(driver, vm, dev);
         break;
     case VIR_DOMAIN_DEVICE_CHR:
         ret = qemuDomainDetachChrDevice(driver, vm, dev->data.chr);
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index f74574857a..bc683e036a 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -3326,8 +3326,7 @@ qemuDomainDetachHostUSBDevice(virQEMUDriverPtr driver,
 }
 
 static int
-qemuDomainDetachHostSCSIDevice(virConnectPtr conn ATTRIBUTE_UNUSED,
-                               virQEMUDriverPtr driver,
+qemuDomainDetachHostSCSIDevice(virQEMUDriverPtr driver,
                                virDomainObjPtr vm,
                                virDomainHostdevDefPtr detach)
 {
@@ -3361,8 +3360,7 @@ qemuDomainDetachHostSCSIDevice(virConnectPtr conn ATTRIBUTE_UNUSED,
 }
 
 static int
-qemuDomainDetachThisHostDevice(virConnectPtr conn,
-                               virQEMUDriverPtr driver,
+qemuDomainDetachThisHostDevice(virQEMUDriverPtr driver,
                                virDomainObjPtr vm,
                                virDomainHostdevDefPtr detach)
 {
@@ -3376,7 +3374,7 @@ qemuDomainDetachThisHostDevice(virConnectPtr conn,
         ret = qemuDomainDetachHostUSBDevice(driver, vm, detach);
         break;
     case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI:
-        ret = qemuDomainDetachHostSCSIDevice(conn, driver, vm, detach);
+        ret = qemuDomainDetachHostSCSIDevice(driver, vm, detach);
         break;
     default:
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
@@ -3399,8 +3397,7 @@ qemuDomainDetachThisHostDevice(virConnectPtr conn,
 }
 
 /* search for a hostdev matching dev and detach it */
-int qemuDomainDetachHostDevice(virConnectPtr conn,
-                               virQEMUDriverPtr driver,
+int qemuDomainDetachHostDevice(virQEMUDriverPtr driver,
                                virDomainObjPtr vm,
                                virDomainDeviceDefPtr dev)
 {
@@ -3469,14 +3466,13 @@ int qemuDomainDetachHostDevice(virConnectPtr conn,
      * function so that mac address / virtualport are reset
      */
     if (detach->parent.type == VIR_DOMAIN_DEVICE_NET)
-        return qemuDomainDetachNetDevice(conn, driver, vm, &detach->parent);
+        return qemuDomainDetachNetDevice(driver, vm, &detach->parent);
     else
-        return qemuDomainDetachThisHostDevice(conn, driver, vm, detach);
+        return qemuDomainDetachThisHostDevice(driver, vm, detach);
 }
 
 int
-qemuDomainDetachNetDevice(virConnectPtr conn,
-                          virQEMUDriverPtr driver,
+qemuDomainDetachNetDevice(virQEMUDriverPtr driver,
                           virDomainObjPtr vm,
                           virDomainDeviceDefPtr dev)
 {
@@ -3492,7 +3488,7 @@ qemuDomainDetachNetDevice(virConnectPtr conn,
 
     if (virDomainNetGetActualType(detach) == VIR_DOMAIN_NET_TYPE_HOSTDEV) {
         /* coverity[negative_returns] */
-        ret = qemuDomainDetachThisHostDevice(conn, driver, vm,
+        ret = qemuDomainDetachThisHostDevice(driver, vm,
                                              virDomainNetGetActualHostdev(detach));
         goto cleanup;
     }
diff --git a/src/qemu/qemu_hotplug.h b/src/qemu/qemu_hotplug.h
index 55c9333da5..1c9ca8f40b 100644
--- a/src/qemu/qemu_hotplug.h
+++ b/src/qemu/qemu_hotplug.h
@@ -78,12 +78,10 @@ int qemuDomainDetachDeviceDiskLive(virQEMUDriverPtr driver,
 int qemuDomainDetachControllerDevice(virQEMUDriverPtr driver,
                                      virDomainObjPtr vm,
                                      virDomainDeviceDefPtr dev);
-int qemuDomainDetachNetDevice(virConnectPtr conn,
-                              virQEMUDriverPtr driver,
+int qemuDomainDetachNetDevice(virQEMUDriverPtr driver,
                               virDomainObjPtr vm,
                               virDomainDeviceDefPtr dev);
-int qemuDomainDetachHostDevice(virConnectPtr conn,
-                               virQEMUDriverPtr driver,
+int qemuDomainDetachHostDevice(virQEMUDriverPtr driver,
                                virDomainObjPtr vm,
                                virDomainDeviceDefPtr dev);
 int qemuDomainAttachLease(virQEMUDriverPtr driver,