69 lines
2 KiB
Diff
69 lines
2 KiB
Diff
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From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
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Date: Fri, 17 Oct 2014 07:40:28 +0530
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Subject: [PATCH] ath9k: Fix HW scan abort
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Instead of using ATH_CHANCTX_EVENT_ASSIGN to abort
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a HW scan when a new interface becomes active, use the
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mgd_prepare_tx() callback. This allows us to make
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sure that the GO's channel becomes operational by
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using flush_work().
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Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
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---
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--- a/drivers/net/wireless/ath/ath9k/channel.c
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+++ b/drivers/net/wireless/ath/ath9k/channel.c
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@@ -743,22 +743,6 @@ void ath_chanctx_event(struct ath_softc
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ieee80211_queue_work(sc->hw, &sc->chanctx_work);
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break;
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case ATH_CHANCTX_EVENT_ASSIGN:
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- /*
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- * When adding a new channel context, check if a scan
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- * is in progress and abort it since the addition of
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- * a new channel context is usually followed by VIF
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- * assignment, in which case we have to start multi-channel
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- * operation.
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- */
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- if (test_bit(ATH_OP_SCANNING, &common->op_flags)) {
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- ath_dbg(common, CHAN_CTX,
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- "Aborting HW scan to add new context\n");
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-
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- spin_unlock_bh(&sc->chan_lock);
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- del_timer_sync(&sc->offchannel.timer);
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- ath_scan_complete(sc, true);
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- spin_lock_bh(&sc->chan_lock);
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- }
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break;
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case ATH_CHANCTX_EVENT_CHANGE:
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break;
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--- a/drivers/net/wireless/ath/ath9k/main.c
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+++ b/drivers/net/wireless/ath/ath9k/main.c
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@@ -2365,7 +2365,6 @@ static int ath9k_add_chanctx(struct ieee
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conf->def.chan->center_freq);
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ath_chanctx_set_channel(sc, ctx, &conf->def);
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- ath_chanctx_event(sc, NULL, ATH_CHANCTX_EVENT_ASSIGN);
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mutex_unlock(&sc->mutex);
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return 0;
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@@ -2496,6 +2495,19 @@ static void ath9k_mgd_prepare_tx(struct
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if (!changed)
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goto out;
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+ if (test_bit(ATH_OP_SCANNING, &common->op_flags)) {
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+ ath_dbg(common, CHAN_CTX,
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+ "%s: Aborting HW scan\n", __func__);
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+
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+ mutex_unlock(&sc->mutex);
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+
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+ del_timer_sync(&sc->offchannel.timer);
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+ ath_scan_complete(sc, true);
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+ flush_work(&sc->chanctx_work);
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+
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+ mutex_lock(&sc->mutex);
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+ }
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+
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go_ctx = ath_is_go_chanctx_present(sc);
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if (go_ctx) {
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