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Subject[PATCH 3.10 15/74] ath9k: fix tx queue scheduling after channel changes
Date
3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Felix Fietkau <nbd@openwrt.org>

commit ec30326ea773900da210c495e14cfeb532550ba2 upstream.

Otherwise, if queues are full during a scan, tx scheduling does not
resume after switching back to the home channel.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/wireless/ath/ath9k/main.c | 23 +++++++++++------------
1 file changed, 11 insertions(+), 12 deletions(-)

--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -209,6 +209,7 @@ static bool ath_complete_reset(struct at
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
unsigned long flags;
+ int i;

if (ath_startrecv(sc) != 0) {
ath_err(common, "Unable to restart recv logic\n");
@@ -236,6 +237,15 @@ static bool ath_complete_reset(struct at
}
work:
ath_restart_work(sc);
+
+ for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
+ if (!ATH_TXQ_SETUP(sc, i))
+ continue;
+
+ spin_lock_bh(&sc->tx.txq[i].axq_lock);
+ ath_txq_schedule(sc, &sc->tx.txq[i]);
+ spin_unlock_bh(&sc->tx.txq[i].axq_lock);
+ }
}

if ((ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) && sc->ant_rx != 3)
@@ -543,21 +553,10 @@ chip_reset:

static int ath_reset(struct ath_softc *sc)
{
- int i, r;
+ int r;

ath9k_ps_wakeup(sc);
-
r = ath_reset_internal(sc, NULL);
-
- for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
- if (!ATH_TXQ_SETUP(sc, i))
- continue;
-
- spin_lock_bh(&sc->tx.txq[i].axq_lock);
- ath_txq_schedule(sc, &sc->tx.txq[i]);
- spin_unlock_bh(&sc->tx.txq[i].axq_lock);
- }
-
ath9k_ps_restore(sc);

return r;



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