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Commit b18111d9 authored by Sujith Manoharan's avatar Sujith Manoharan Committed by John W. Linville
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ath9k: Fix crash in MCC mode 



When a channel context is removed, the hw_queue_base
is set to -1, this will result in a panic because
ath9k_chanctx_stop_queues() can be called on an interface
that is not assigned to any context yet - for example,
when trying to scan.

Fix this issue by setting the hw_queue_base to zero
when a channel context is removed.

Signed-off-by: default avatarSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent d2a993e2

drivers/net/wireless/ath/ath9k/main.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -2332,7 +2332,7 @@ static void ath9k_remove_chanctx(struct ieee80211_hw *hw, 
		conf->def.chan->center_freq);

		conf->def.chan->center_freq);





	ctx->assigned = false;

	ctx->assigned = false;

	ctx->hw_queue_base = -1;

	ctx->hw_queue_base = 0;

	ath_chanctx_event(sc, NULL, ATH_CHANCTX_EVENT_UNASSIGN);

	ath_chanctx_event(sc, NULL, ATH_CHANCTX_EVENT_UNASSIGN);





	mutex_unlock(&sc->mutex);

	mutex_unlock(&sc->mutex);