D8048.id20761.diff
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D8048.id20761.diff
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	Index: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
	===================================================================
	--- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
	+++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
	@@ -3580,16 +3580,18 @@
	*/
	hv_rf_on_close(sc);

	- /* Give RNDIS enough time to flush all pending data packets. */
	+ /*
	+ * Give RNDIS enough time to flush all pending data packets.
	+ */
	pause("waitrx", (200 * hz) / 1000);

	+ /*
	+ * Drain RX/TX bufrings and interrupts.
	+ */
	nsubch = sc->hn_rx_ring_inuse - 1;
	if (nsubch > 0)
	subch = vmbus_subchan_get(sc->hn_prichan, nsubch);

	- /*
	- * Drain RX/TX bufrings and interrupts.
	- */
	if (subch != NULL) {
	for (i = 0; i < nsubch; ++i)
	hn_rx_drain(subch[i]);