D33282.diff
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D33282.diff
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	diff --git a/sys/netgraph/bluetooth/drivers/ubt/ng_ubt.c b/sys/netgraph/bluetooth/drivers/ubt/ng_ubt.c
	--- a/sys/netgraph/bluetooth/drivers/ubt/ng_ubt.c
	+++ b/sys/netgraph/bluetooth/drivers/ubt/ng_ubt.c
	@@ -152,6 +152,11 @@
	static ng_rcvmsg_t ng_ubt_rcvmsg;
	static ng_rcvdata_t ng_ubt_rcvdata;

	+static int ng_usb_isoc_enable = 1;
	+
	+SYSCTL_INT(_net_bluetooth, OID_AUTO, usb_isoc_enable, CTLFLAG_RDTUN \| CTLFLAG_MPSAFE,
	+ &ng_usb_isoc_enable, 0, "enable isochronous transfers");
	+
	/* Queue length */
	static const struct ng_parse_struct_field ng_ubt_node_qlen_type_fields[] =
	{
	@@ -742,8 +747,9 @@
	}

	/* Setup transfers for both interfaces */
	- if (usbd_transfer_setup(uaa->device, iface_index, sc->sc_xfer,
	- ubt_config, UBT_N_TRANSFER, sc, &sc->sc_if_mtx)) {
	+ if (usbd_transfer_setup(uaa->device, iface_index, sc->sc_xfer, ubt_config,
	+ ng_usb_isoc_enable ? UBT_N_TRANSFER : UBT_IF_1_ISOC_DT_RD1,
	+ sc, &sc->sc_if_mtx)) {
	UBT_ALERT(sc, "could not allocate transfers\n");
	goto detach;
	}