bnxt_en: Refactor bnxt_rdma_aux_device_init/uninit functions

In its current form, bnxt_rdma_aux_device_init() not only initializes
the necessary data structures of the newly created aux device but also
adds the aux device into the aux bus subsytem. Refactor the logic into
separate functions, first function to initialize the aux device along
with the required resources and second, to actually add the device to
the aux bus subsytem.
This separation helps to create bnxt_en_dev much earlier and save its
resources separately.

Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240409215431.41424-5-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: vikasbrcm

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -14786,10 +14786,13 @@ static void bnxt_remove_one(struct pci_dev *pdev)
 	if (BNXT_PF(bp))
 		bnxt_sriov_disable(bp);
 
-	bnxt_rdma_aux_device_uninit(bp);
+	bnxt_rdma_aux_device_del(bp);
 
 	bnxt_ptp_clear(bp);
 	unregister_netdev(dev);
+
+	bnxt_rdma_aux_device_uninit(bp);
+
 	bnxt_free_l2_filters(bp, true);
 	bnxt_free_ntp_fltrs(bp, true);
 	if (BNXT_SUPPORTS_MULTI_RSS_CTX(bp))
@@ -15408,20 +15411,23 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (BNXT_SUPPORTS_NTUPLE_VNIC(bp))
 		bnxt_init_multi_rss_ctx(bp);
 
+	bnxt_rdma_aux_device_init(bp);
+
 	rc = register_netdev(dev);
 	if (rc)
 		goto init_err_cleanup;
 
 	bnxt_dl_fw_reporters_create(bp);
 
-	bnxt_rdma_aux_device_init(bp);
+	bnxt_rdma_aux_device_add(bp);
 
 	bnxt_print_device_info(bp);
 
 	pci_save_state(pdev);
 
 	return 0;
 init_err_cleanup:
+	bnxt_rdma_aux_device_uninit(bp);
 	bnxt_dl_unregister(bp);
 init_err_dl:
 	bnxt_shutdown_tc(bp);

drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c

@@ -291,7 +291,6 @@ void bnxt_rdma_aux_device_uninit(struct bnxt *bp)
 
 	aux_priv = bp->aux_priv;
 	adev = &aux_priv->aux_dev;
-	auxiliary_device_delete(adev);
 	auxiliary_device_uninit(adev);
 }
 
@@ -309,6 +308,14 @@ static void bnxt_aux_dev_release(struct device *dev)
 	bp->aux_priv = NULL;
 }
 
+void bnxt_rdma_aux_device_del(struct bnxt *bp)
+{
+	if (!bp->edev)
+		return;
+
+	auxiliary_device_delete(&bp->aux_priv->aux_dev);
+}
+
 static void bnxt_set_edev_info(struct bnxt_en_dev *edev, struct bnxt *bp)
 {
 	edev->net = bp->dev;
@@ -332,6 +339,23 @@ static void bnxt_set_edev_info(struct bnxt_en_dev *edev, struct bnxt *bp)
 	edev->ulp_tbl->msix_requested = bnxt_get_ulp_msix_num(bp);
 }
 
+void bnxt_rdma_aux_device_add(struct bnxt *bp)
+{
+	struct auxiliary_device *aux_dev;
+	int rc;
+
+	if (!bp->edev)
+		return;
+
+	aux_dev = &bp->aux_priv->aux_dev;
+	rc = auxiliary_device_add(aux_dev);
+	if (rc) {
+		netdev_warn(bp->dev, "Failed to add auxiliary device for ROCE\n");
+		auxiliary_device_uninit(aux_dev);
+		bp->flags &= ~BNXT_FLAG_ROCE_CAP;
+	}
+}
+
 void bnxt_rdma_aux_device_init(struct bnxt *bp)
 {
 	struct auxiliary_device *aux_dev;
@@ -386,13 +410,6 @@ void bnxt_rdma_aux_device_init(struct bnxt *bp)
 	bp->edev = edev;
 	bnxt_set_edev_info(edev, bp);
 
-	rc = auxiliary_device_add(aux_dev);
-	if (rc) {
-		netdev_warn(bp->dev,
-			    "Failed to add auxiliary device for ROCE\n");
-		goto aux_dev_uninit;
-	}
-
 	return;
 
 aux_dev_uninit:

drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h

@@ -103,6 +103,8 @@ void bnxt_ulp_irq_stop(struct bnxt *bp);
 void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
 void bnxt_rdma_aux_device_uninit(struct bnxt *bp);
+void bnxt_rdma_aux_device_del(struct bnxt *bp);
+void bnxt_rdma_aux_device_add(struct bnxt *bp);
 void bnxt_rdma_aux_device_init(struct bnxt *bp);
 int bnxt_register_dev(struct bnxt_en_dev *edev, struct bnxt_ulp_ops *ulp_ops,
 		      void *handle);