diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 5743b78..463177e 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -2645,7 +2645,8 @@ static void spapr_pending_dimm_unplugs_remove(sPAPRMachineState *spapr,
     g_free(dimm_state);
 }
 
-static void spapr_lmb_release(DeviceState *dev, void *opaque)
+/* Callback to be called during DRC release. */
+void spapr_lmb_release(DeviceState *dev)
 {
     HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev);
     sPAPRMachineState *spapr = SPAPR_MACHINE(hotplug_ctrl);
@@ -2708,7 +2709,7 @@ static void spapr_memory_unplug_request(HotplugHandler *hotplug_dev,
         g_assert(drc);
 
         drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
-        drck->detach(drc, dev, spapr_lmb_release, NULL, errp);
+        drck->detach(drc, dev, errp);
         addr += SPAPR_MEMORY_BLOCK_SIZE;
     }
 
@@ -2755,7 +2756,8 @@ static void spapr_core_unplug(HotplugHandler *hotplug_dev, DeviceState *dev,
     object_unparent(OBJECT(dev));
 }
 
-static void spapr_core_release(DeviceState *dev, void *opaque)
+/* Callback to be called during DRC release. */
+void spapr_core_release(DeviceState *dev)
 {
     HotplugHandler *hotplug_ctrl;
 
@@ -2788,7 +2790,7 @@ void spapr_core_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev,
     g_assert(drc);
 
     drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
-    drck->detach(drc, dev, spapr_core_release, NULL, &local_err);
+    drck->detach(drc, dev, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c
index 9fa5545..2851e16 100644
--- a/hw/ppc/spapr_drc.c
+++ b/hw/ppc/spapr_drc.c
@@ -20,6 +20,7 @@
 #include "qapi/visitor.h"
 #include "qemu/error-report.h"
 #include "hw/ppc/spapr.h" /* for RTAS return codes */
+#include "hw/pci-host/spapr.h" /* spapr_phb_remove_pci_device_cb callback */
 #include "trace.h"
 
 #define DRC_CONTAINER_PATH "/dr-connector"
@@ -99,8 +100,7 @@ static uint32_t set_isolation_state(sPAPRDRConnector *drc,
         if (drc->awaiting_release) {
             if (drc->configured) {
                 trace_spapr_drc_set_isolation_state_finalizing(get_index(drc));
-                drck->detach(drc, DEVICE(drc->dev), drc->detach_cb,
-                             drc->detach_cb_opaque, NULL);
+                drck->detach(drc, DEVICE(drc->dev), NULL);
             } else {
                 trace_spapr_drc_set_isolation_state_deferring(get_index(drc));
             }
@@ -153,8 +153,7 @@ static uint32_t set_allocation_state(sPAPRDRConnector *drc,
         if (drc->awaiting_release &&
             drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_UNUSABLE) {
             trace_spapr_drc_set_allocation_state_finalizing(get_index(drc));
-            drck->detach(drc, DEVICE(drc->dev), drc->detach_cb,
-                         drc->detach_cb_opaque, NULL);
+            drck->detach(drc, DEVICE(drc->dev), NULL);
         } else if (drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_USABLE) {
             drc->awaiting_allocation = false;
         }
@@ -404,15 +403,10 @@ static void attach(sPAPRDRConnector *drc, DeviceState *d, void *fdt,
                              NULL, 0, NULL);
 }
 
-static void detach(sPAPRDRConnector *drc, DeviceState *d,
-                   spapr_drc_detach_cb *detach_cb,
-                   void *detach_cb_opaque, Error **errp)
+static void detach(sPAPRDRConnector *drc, DeviceState *d, Error **errp)
 {
     trace_spapr_drc_detach(get_index(drc));
 
-    drc->detach_cb = detach_cb;
-    drc->detach_cb_opaque = detach_cb_opaque;
-
     /* if we've signalled device presence to the guest, or if the guest
      * has gone ahead and configured the device (via manually-executed
      * device add via drmgr in guest, namely), we need to wait
@@ -456,8 +450,21 @@ static void detach(sPAPRDRConnector *drc, DeviceState *d,
 
     drc->indicator_state = SPAPR_DR_INDICATOR_STATE_INACTIVE;
 
-    if (drc->detach_cb) {
-        drc->detach_cb(drc->dev, drc->detach_cb_opaque);
+    /* Calling release callbacks based on drc->type. */
+    switch (drc->type) {
+    case SPAPR_DR_CONNECTOR_TYPE_CPU:
+        spapr_core_release(drc->dev);
+        break;
+    case SPAPR_DR_CONNECTOR_TYPE_PCI:
+        spapr_phb_remove_pci_device_cb(drc->dev);
+        break;
+    case SPAPR_DR_CONNECTOR_TYPE_LMB:
+        spapr_lmb_release(drc->dev);
+        break;
+    case SPAPR_DR_CONNECTOR_TYPE_PHB:
+    case SPAPR_DR_CONNECTOR_TYPE_VIO:
+    default:
+        g_assert(false);
     }
 
     drc->awaiting_release = false;
@@ -467,8 +474,6 @@ static void detach(sPAPRDRConnector *drc, DeviceState *d,
     drc->fdt_start_offset = 0;
     object_property_del(OBJECT(drc), "device", NULL);
     drc->dev = NULL;
-    drc->detach_cb = NULL;
-    drc->detach_cb_opaque = NULL;
 }
 
 static bool release_pending(sPAPRDRConnector *drc)
@@ -498,8 +503,7 @@ static void reset(DeviceState *d)
          * force removal if we are
          */
         if (drc->awaiting_release) {
-            drck->detach(drc, DEVICE(drc->dev), drc->detach_cb,
-                         drc->detach_cb_opaque, NULL);
+            drck->detach(drc, DEVICE(drc->dev), NULL);
         }
 
         /* non-PCI devices may be awaiting a transition to UNUSABLE */
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index a7cff32..e4daf8d 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -1369,7 +1369,8 @@ out:
     }
 }
 
-static void spapr_phb_remove_pci_device_cb(DeviceState *dev, void *opaque)
+/* Callback to be called during DRC release. */
+void spapr_phb_remove_pci_device_cb(DeviceState *dev)
 {
     /* some version guests do not wait for completion of a device
      * cleanup (generally done asynchronously by the kernel) before
@@ -1392,7 +1393,7 @@ static void spapr_phb_remove_pci_device(sPAPRDRConnector *drc,
 {
     sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
 
-    drck->detach(drc, DEVICE(pdev), spapr_phb_remove_pci_device_cb, phb, errp);
+    drck->detach(drc, DEVICE(pdev), errp);
 }
 
 static sPAPRDRConnector *spapr_phb_get_pci_func_drc(sPAPRPHBState *phb,
diff --git a/include/hw/pci-host/spapr.h b/include/hw/pci-host/spapr.h
index 1c2e970..38470b2 100644
--- a/include/hw/pci-host/spapr.h
+++ b/include/hw/pci-host/spapr.h
@@ -123,6 +123,9 @@ sPAPRPHBState *spapr_pci_find_phb(sPAPRMachineState *spapr, uint64_t buid);
 PCIDevice *spapr_pci_find_dev(sPAPRMachineState *spapr, uint64_t buid,
                               uint32_t config_addr);
 
+/* PCI release callback. */
+void spapr_phb_remove_pci_device_cb(DeviceState *dev);
+
 /* VFIO EEH hooks */
 #ifdef CONFIG_LINUX
 bool spapr_phb_eeh_available(sPAPRPHBState *sphb);
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index 87af2f1..3aca19c 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -643,6 +643,10 @@ void spapr_hotplug_req_remove_by_count_indexed(sPAPRDRConnectorType drc_type,
 void *spapr_populate_hotplug_cpu_dt(CPUState *cs, int *fdt_offset,
                                     sPAPRMachineState *spapr);
 
+/* CPU and LMB DRC release callbacks. */
+void spapr_core_release(DeviceState *dev);
+void spapr_lmb_release(DeviceState *dev);
+
 /* rtas-configure-connector state */
 struct sPAPRConfigureConnectorState {
     uint32_t drc_index;
diff --git a/include/hw/ppc/spapr_drc.h b/include/hw/ppc/spapr_drc.h
index 5524247..813b9ff 100644
--- a/include/hw/ppc/spapr_drc.h
+++ b/include/hw/ppc/spapr_drc.h
@@ -130,8 +130,6 @@ typedef enum {
     SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE = -9003,
 } sPAPRDRCCResponse;
 
-typedef void (spapr_drc_detach_cb)(DeviceState *d, void *opaque);
-
 typedef struct sPAPRDRConnector {
     /*< private >*/
     DeviceState parent;
@@ -158,8 +156,6 @@ typedef struct sPAPRDRConnector {
 
     /* device pointer, via link property */
     DeviceState *dev;
-    spapr_drc_detach_cb *detach_cb;
-    void *detach_cb_opaque;
 } sPAPRDRConnector;
 
 typedef struct sPAPRDRConnectorClass {
@@ -188,9 +184,7 @@ typedef struct sPAPRDRConnectorClass {
     /* QEMU interfaces for managing hotplug operations */
     void (*attach)(sPAPRDRConnector *drc, DeviceState *d, void *fdt,
                    int fdt_start_offset, bool coldplug, Error **errp);
-    void (*detach)(sPAPRDRConnector *drc, DeviceState *d,
-                   spapr_drc_detach_cb *detach_cb,
-                   void *detach_cb_opaque, Error **errp);
+    void (*detach)(sPAPRDRConnector *drc, DeviceState *d, Error **errp);
     bool (*release_pending)(sPAPRDRConnector *drc);
     void (*set_signalled)(sPAPRDRConnector *drc);
 } sPAPRDRConnectorClass;
