D59624.diff
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	diff --git a/sys/dev/iwx/if_iwx.c b/sys/dev/iwx/if_iwx.c
	--- a/sys/dev/iwx/if_iwx.c
	+++ b/sys/dev/iwx/if_iwx.c
	@@ -8085,6 +8085,9 @@
	int err = 0;

	IWX_LOCK(sc);
	+ if (sc->sc_flags & IWX_FLAG_SHUTDOWN) {
	+ goto out;
	+ }

	if (nstate <= ostate \|\| nstate > IEEE80211_S_RUN) {
	switch (ostate) {
	@@ -10679,6 +10682,7 @@
	int txq_i;

	iwx_stop_device(sc);
	+ sc->sc_flags \|= IWX_FLAG_SHUTDOWN;

	taskqueue_drain_all(sc->sc_tq);
	taskqueue_free(sc->sc_tq);