diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index 4a0c51a9477e..78c2f4e39d0a 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -449,7 +449,7 @@ static int nvme_addr_read(NvmeCtrl *n, hwaddr addr, void *buf, int size)
         return 0;
     }
 
-    return pci_dma_read(&n->parent_obj, addr, buf, size);
+    return pci_dma_read(PCI_DEVICE(n), addr, buf, size);
 }
 
 static int nvme_addr_write(NvmeCtrl *n, hwaddr addr, const void *buf, int size)
@@ -469,7 +469,7 @@ static int nvme_addr_write(NvmeCtrl *n, hwaddr addr, const void *buf, int size)
         return 0;
     }
 
-    return pci_dma_write(&n->parent_obj, addr, buf, size);
+    return pci_dma_write(PCI_DEVICE(n), addr, buf, size);
 }
 
 static bool nvme_nsid_valid(NvmeCtrl *n, uint32_t nsid)
@@ -514,24 +514,27 @@ static uint8_t nvme_sq_empty(NvmeSQueue *sq)
 
 static void nvme_irq_check(NvmeCtrl *n)
 {
+    PCIDevice *pci = PCI_DEVICE(n);
     uint32_t intms = ldl_le_p(&n->bar.intms);
 
-    if (msix_enabled(&(n->parent_obj))) {
+    if (msix_enabled(pci)) {
         return;
     }
     if (~intms & n->irq_status) {
-        pci_irq_assert(&n->parent_obj);
+        pci_irq_assert(pci);
     } else {
-        pci_irq_deassert(&n->parent_obj);
+        pci_irq_deassert(pci);
     }
 }
 
 static void nvme_irq_assert(NvmeCtrl *n, NvmeCQueue *cq)
 {
+    PCIDevice *pci = PCI_DEVICE(n);
+
     if (cq->irq_enabled) {
-        if (msix_enabled(&(n->parent_obj))) {
+        if (msix_enabled(pci)) {
             trace_pci_nvme_irq_msix(cq->vector);
-            msix_notify(&(n->parent_obj), cq->vector);
+            msix_notify(pci, cq->vector);
         } else {
             trace_pci_nvme_irq_pin();
             assert(cq->vector < 32);
@@ -546,7 +549,7 @@ static void nvme_irq_assert(NvmeCtrl *n, NvmeCQueue *cq)
 static void nvme_irq_deassert(NvmeCtrl *n, NvmeCQueue *cq)
 {
     if (cq->irq_enabled) {
-        if (msix_enabled(&(n->parent_obj))) {
+        if (msix_enabled(PCI_DEVICE(n))) {
             return;
         } else {
             assert(cq->vector < 32);
@@ -570,7 +573,7 @@ static void nvme_req_clear(NvmeRequest *req)
 static inline void nvme_sg_init(NvmeCtrl *n, NvmeSg *sg, bool dma)
 {
     if (dma) {
-        pci_dma_sglist_init(&sg->qsg, &n->parent_obj, 0);
+        pci_dma_sglist_init(&sg->qsg, PCI_DEVICE(n), 0);
         sg->flags = NVME_SG_DMA;
     } else {
         qemu_iovec_init(&sg->iov, 0);
@@ -1333,7 +1336,7 @@ static inline void nvme_blk_write(BlockBackend *blk, int64_t offset,
 
 static void nvme_update_cq_head(NvmeCQueue *cq)
 {
-    pci_dma_read(&cq->ctrl->parent_obj, cq->db_addr, &cq->head,
+    pci_dma_read(PCI_DEVICE(cq->ctrl), cq->db_addr, &cq->head,
             sizeof(cq->head));
     trace_pci_nvme_shadow_doorbell_cq(cq->cqid, cq->head);
 }
@@ -1363,7 +1366,7 @@ static void nvme_post_cqes(void *opaque)
         req->cqe.sq_id = cpu_to_le16(sq->sqid);
         req->cqe.sq_head = cpu_to_le16(sq->head);
         addr = cq->dma_addr + cq->tail * n->cqe_size;
-        ret = pci_dma_write(&n->parent_obj, addr, (void *)&req->cqe,
+        ret = pci_dma_write(PCI_DEVICE(n), addr, (void *)&req->cqe,
                             sizeof(req->cqe));
         if (ret) {
             trace_pci_nvme_err_addr_write(addr);
@@ -4615,6 +4618,7 @@ static uint16_t nvme_get_log(NvmeCtrl *n, NvmeRequest *req)
 
 static void nvme_free_cq(NvmeCQueue *cq, NvmeCtrl *n)
 {
+    PCIDevice *pci = PCI_DEVICE(n);
     uint16_t offset = (cq->cqid << 3) + (1 << 2);
 
     n->cq[cq->cqid] = NULL;
@@ -4625,8 +4629,8 @@ static void nvme_free_cq(NvmeCQueue *cq, NvmeCtrl *n)
         event_notifier_set_handler(&cq->notifier, NULL);
         event_notifier_cleanup(&cq->notifier);
     }
-    if (msix_enabled(&n->parent_obj)) {
-        msix_vector_unuse(&n->parent_obj, cq->vector);
+    if (msix_enabled(pci)) {
+        msix_vector_unuse(pci, cq->vector);
     }
     if (cq->cqid) {
         g_free(cq);
@@ -4664,8 +4668,10 @@ static void nvme_init_cq(NvmeCQueue *cq, NvmeCtrl *n, uint64_t dma_addr,
                          uint16_t cqid, uint16_t vector, uint16_t size,
                          uint16_t irq_enabled)
 {
-    if (msix_enabled(&n->parent_obj)) {
-        msix_vector_use(&n->parent_obj, vector);
+    PCIDevice *pci = PCI_DEVICE(n);
+
+    if (msix_enabled(pci)) {
+        msix_vector_use(pci, vector);
     }
     cq->ctrl = n;
     cq->cqid = cqid;
@@ -4716,7 +4722,7 @@ static uint16_t nvme_create_cq(NvmeCtrl *n, NvmeRequest *req)
         trace_pci_nvme_err_invalid_create_cq_addr(prp1);
         return NVME_INVALID_PRP_OFFSET | NVME_DNR;
     }
-    if (unlikely(!msix_enabled(&n->parent_obj) && vector)) {
+    if (unlikely(!msix_enabled(PCI_DEVICE(n)) && vector)) {
         trace_pci_nvme_err_invalid_create_cq_vector(vector);
         return NVME_INVALID_IRQ_VECTOR | NVME_DNR;
     }
@@ -5959,6 +5965,7 @@ static uint16_t nvme_assign_virt_res_to_sec(NvmeCtrl *n, NvmeRequest *req,
 
 static uint16_t nvme_virt_set_state(NvmeCtrl *n, uint16_t cntlid, bool online)
 {
+    PCIDevice *pci = PCI_DEVICE(n);
     NvmeCtrl *sn = NULL;
     NvmeSecCtrlEntry *sctrl;
     int vf_index;
@@ -5968,9 +5975,9 @@ static uint16_t nvme_virt_set_state(NvmeCtrl *n, uint16_t cntlid, bool online)
         return NVME_INVALID_CTRL_ID | NVME_DNR;
     }
 
-    if (!pci_is_vf(&n->parent_obj)) {
+    if (!pci_is_vf(pci)) {
         vf_index = le16_to_cpu(sctrl->vfn) - 1;
-        sn = NVME(pcie_sriov_get_vf_at_index(&n->parent_obj, vf_index));
+        sn = NVME(pcie_sriov_get_vf_at_index(pci, vf_index));
     }
 
     if (online) {
@@ -6028,6 +6035,7 @@ static uint16_t nvme_virt_mngmt(NvmeCtrl *n, NvmeRequest *req)
 
 static uint16_t nvme_dbbuf_config(NvmeCtrl *n, const NvmeRequest *req)
 {
+    PCIDevice *pci = PCI_DEVICE(n);
     uint64_t dbs_addr = le64_to_cpu(req->cmd.dptr.prp1);
     uint64_t eis_addr = le64_to_cpu(req->cmd.dptr.prp2);
     int i;
@@ -6054,8 +6062,7 @@ static uint16_t nvme_dbbuf_config(NvmeCtrl *n, const NvmeRequest *req)
              */
             sq->db_addr = dbs_addr + (i << 3);
             sq->ei_addr = eis_addr + (i << 3);
-            pci_dma_write(&n->parent_obj, sq->db_addr, &sq->tail,
-                    sizeof(sq->tail));
+            pci_dma_write(pci, sq->db_addr, &sq->tail, sizeof(sq->tail));
 
             if (n->params.ioeventfd && sq->sqid != 0) {
                 if (!nvme_init_sq_ioeventfd(sq)) {
@@ -6068,8 +6075,7 @@ static uint16_t nvme_dbbuf_config(NvmeCtrl *n, const NvmeRequest *req)
             /* CAP.DSTRD is 0, so offset of ith cq db_addr is (i<<3)+(1<<2) */
             cq->db_addr = dbs_addr + (i << 3) + (1 << 2);
             cq->ei_addr = eis_addr + (i << 3) + (1 << 2);
-            pci_dma_write(&n->parent_obj, cq->db_addr, &cq->head,
-                    sizeof(cq->head));
+            pci_dma_write(pci, cq->db_addr, &cq->head, sizeof(cq->head));
 
             if (n->params.ioeventfd && cq->cqid != 0) {
                 if (!nvme_init_cq_ioeventfd(cq)) {
@@ -6141,14 +6147,14 @@ static uint16_t nvme_admin_cmd(NvmeCtrl *n, NvmeRequest *req)
 
 static void nvme_update_sq_eventidx(const NvmeSQueue *sq)
 {
-    pci_dma_write(&sq->ctrl->parent_obj, sq->ei_addr, &sq->tail,
+    pci_dma_write(PCI_DEVICE(sq->ctrl), sq->ei_addr, &sq->tail,
                   sizeof(sq->tail));
     trace_pci_nvme_eventidx_sq(sq->sqid, sq->tail);
 }
 
 static void nvme_update_sq_tail(NvmeSQueue *sq)
 {
-    pci_dma_read(&sq->ctrl->parent_obj, sq->db_addr, &sq->tail,
+    pci_dma_read(PCI_DEVICE(sq->ctrl), sq->db_addr, &sq->tail,
                  sizeof(sq->tail));
     trace_pci_nvme_shadow_doorbell_sq(sq->sqid, sq->tail);
 }
@@ -6216,7 +6222,7 @@ static void nvme_update_msixcap_ts(PCIDevice *pci_dev, uint32_t table_size)
 
 static void nvme_activate_virt_res(NvmeCtrl *n)
 {
-    PCIDevice *pci_dev = &n->parent_obj;
+    PCIDevice *pci_dev = PCI_DEVICE(n);
     NvmePriCtrlCap *cap = &n->pri_ctrl_cap;
     NvmeSecCtrlEntry *sctrl;
 
@@ -6239,7 +6245,7 @@ static void nvme_activate_virt_res(NvmeCtrl *n)
 
 static void nvme_ctrl_reset(NvmeCtrl *n, NvmeResetType rst)
 {
-    PCIDevice *pci_dev = &n->parent_obj;
+    PCIDevice *pci_dev = PCI_DEVICE(n);
     NvmeSecCtrlEntry *sctrl;
     NvmeNamespace *ns;
     int i;
@@ -6356,7 +6362,7 @@ static int nvme_start_ctrl(NvmeCtrl *n)
     uint32_t page_size = 1 << page_bits;
     NvmeSecCtrlEntry *sctrl = nvme_sctrl(n);
 
-    if (pci_is_vf(&n->parent_obj) && !sctrl->scs) {
+    if (pci_is_vf(PCI_DEVICE(n)) && !sctrl->scs) {
         trace_pci_nvme_err_startfail_virt_state(le16_to_cpu(sctrl->nvi),
                                                 le16_to_cpu(sctrl->nvq),
                                                 sctrl->scs ? "ONLINE" :
@@ -6471,6 +6477,7 @@ static void nvme_cmb_enable_regs(NvmeCtrl *n)
 static void nvme_write_bar(NvmeCtrl *n, hwaddr offset, uint64_t data,
                            unsigned size)
 {
+    PCIDevice *pci = PCI_DEVICE(n);
     uint64_t cap = ldq_le_p(&n->bar.cap);
     uint32_t cc = ldl_le_p(&n->bar.cc);
     uint32_t intms = ldl_le_p(&n->bar.intms);
@@ -6494,7 +6501,7 @@ static void nvme_write_bar(NvmeCtrl *n, hwaddr offset, uint64_t data,
 
     switch (offset) {
     case NVME_REG_INTMS:
-        if (unlikely(msix_enabled(&(n->parent_obj)))) {
+        if (unlikely(msix_enabled(pci))) {
             NVME_GUEST_ERR(pci_nvme_ub_mmiowr_intmask_with_msix,
                            "undefined access to interrupt mask set"
                            " when MSI-X is enabled");
@@ -6507,7 +6514,7 @@ static void nvme_write_bar(NvmeCtrl *n, hwaddr offset, uint64_t data,
         nvme_irq_check(n);
         break;
     case NVME_REG_INTMC:
-        if (unlikely(msix_enabled(&(n->parent_obj)))) {
+        if (unlikely(msix_enabled(pci))) {
             NVME_GUEST_ERR(pci_nvme_ub_mmiowr_intmask_with_msix,
                            "undefined access to interrupt mask clr"
                            " when MSI-X is enabled");
@@ -6732,7 +6739,7 @@ static uint64_t nvme_mmio_read(void *opaque, hwaddr addr, unsigned size)
         return 0;
     }
 
-    if (pci_is_vf(&n->parent_obj) && !nvme_sctrl(n)->scs &&
+    if (pci_is_vf(PCI_DEVICE(n)) && !nvme_sctrl(n)->scs &&
         addr != NVME_REG_CSTS) {
         trace_pci_nvme_err_ignored_mmio_vf_offline(addr, size);
         return 0;
@@ -6753,6 +6760,7 @@ static uint64_t nvme_mmio_read(void *opaque, hwaddr addr, unsigned size)
 
 static void nvme_process_db(NvmeCtrl *n, hwaddr addr, int val)
 {
+    PCIDevice *pci = PCI_DEVICE(n);
     uint32_t qid;
 
     if (unlikely(addr & ((1 << 2) - 1))) {
@@ -6820,8 +6828,7 @@ static void nvme_process_db(NvmeCtrl *n, hwaddr addr, int val)
         start_sqs = nvme_cq_full(cq) ? 1 : 0;
         cq->head = new_head;
         if (!qid && n->dbbuf_enabled) {
-            pci_dma_write(&n->parent_obj, cq->db_addr, &cq->head,
-                          sizeof(cq->head));
+            pci_dma_write(pci, cq->db_addr, &cq->head, sizeof(cq->head));
         }
         if (start_sqs) {
             NvmeSQueue *sq;
@@ -6894,8 +6901,7 @@ static void nvme_process_db(NvmeCtrl *n, hwaddr addr, int val)
              * including ones that run on Linux, are not updating Admin Queues,
              * so we can't trust reading it for an appropriate sq tail.
              */
-            pci_dma_write(&n->parent_obj, sq->db_addr, &sq->tail,
-                          sizeof(sq->tail));
+            pci_dma_write(pci, sq->db_addr, &sq->tail, sizeof(sq->tail));
         }
 
         qemu_bh_schedule(sq->bh);
@@ -6909,7 +6915,7 @@ static void nvme_mmio_write(void *opaque, hwaddr addr, uint64_t data,
 
     trace_pci_nvme_mmio_write(addr, data, size);
 
-    if (pci_is_vf(&n->parent_obj) && !nvme_sctrl(n)->scs &&
+    if (pci_is_vf(PCI_DEVICE(n)) && !nvme_sctrl(n)->scs &&
         addr != NVME_REG_CSTS) {
         trace_pci_nvme_err_ignored_mmio_vf_offline(addr, size);
         return;
@@ -7093,10 +7099,11 @@ static void nvme_init_state(NvmeCtrl *n)
     NvmePriCtrlCap *cap = &n->pri_ctrl_cap;
     NvmeSecCtrlList *list = &n->sec_ctrl_list;
     NvmeSecCtrlEntry *sctrl;
+    PCIDevice *pci = PCI_DEVICE(n);
     uint8_t max_vfs;
     int i;
 
-    if (pci_is_vf(&n->parent_obj)) {
+    if (pci_is_vf(pci)) {
         sctrl = nvme_sctrl(n);
         max_vfs = 0;
         n->conf_ioqpairs = sctrl->nvq ? le16_to_cpu(sctrl->nvq) - 1 : 0;
@@ -7125,7 +7132,7 @@ static void nvme_init_state(NvmeCtrl *n)
     cap->cntlid = cpu_to_le16(n->cntlid);
     cap->crt = NVME_CRT_VQ | NVME_CRT_VI;
 
-    if (pci_is_vf(&n->parent_obj)) {
+    if (pci_is_vf(pci)) {
         cap->vqprt = cpu_to_le16(1 + n->conf_ioqpairs);
     } else {
         cap->vqprt = cpu_to_le16(1 + n->params.max_ioqpairs -
@@ -7138,7 +7145,7 @@ static void nvme_init_state(NvmeCtrl *n)
                         cap->vqfrt / MAX(max_vfs, 1);
     }
 
-    if (pci_is_vf(&n->parent_obj)) {
+    if (pci_is_vf(pci)) {
         cap->viprt = cpu_to_le16(n->conf_msix_qsize);
     } else {
         cap->viprt = cpu_to_le16(n->params.msix_qsize -
@@ -7445,7 +7452,7 @@ static void nvme_init_ctrl(NvmeCtrl *n, PCIDevice *pci_dev)
     stl_le_p(&n->bar.vs, NVME_SPEC_VER);
     n->bar.intmc = n->bar.intms = 0;
 
-    if (pci_is_vf(&n->parent_obj) && !sctrl->scs) {
+    if (pci_is_vf(pci_dev) && !sctrl->scs) {
         stl_le_p(&n->bar.csts, NVME_CSTS_FAILED);
     }
 }
@@ -7483,6 +7490,7 @@ void nvme_attach_ns(NvmeCtrl *n, NvmeNamespace *ns)
 static void nvme_realize(PCIDevice *pci_dev, Error **errp)
 {
     NvmeCtrl *n = NVME(pci_dev);
+    DeviceState *dev = DEVICE(pci_dev);
     NvmeNamespace *ns;
     Error *local_err = NULL;
     NvmeCtrl *pn = NVME(pcie_sriov_get_pf(pci_dev));
@@ -7502,8 +7510,7 @@ static void nvme_realize(PCIDevice *pci_dev, Error **errp)
         return;
     }
 
-    qbus_init(&n->bus, sizeof(NvmeBus), TYPE_NVME_BUS,
-              &pci_dev->qdev, n->parent_obj.qdev.id);
+    qbus_init(&n->bus, sizeof(NvmeBus), TYPE_NVME_BUS, dev, dev->id);
 
     if (nvme_init_subsys(n, errp)) {
         error_propagate(errp, local_err);
