| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 47/83] ath9k: fix ready time of the multicast buffer queue | Date | Sun, 11 May 2014 21:19:48 +0200 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Felix Fietkau <nbd@openwrt.org>
commit 3b3e0efb5c72c4fc940af50b33626b8a78a907dc upstream.
qi->tqi_readyTime is written directly to registers that expect microseconds as unit instead of TU. When setting the CABQ ready time, cur_conf->beacon_interval is in TU, so convert it to microseconds before passing it to ath9k_hw.
This should hopefully fix some Tx DMA issues with buffered multicast frames in AP mode.
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/xmit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -1698,7 +1698,7 @@ int ath_cabq_update(struct ath_softc *sc ath9k_hw_get_txq_props(sc->sc_ah, qnum, &qi); - qi.tqi_readyTime = (cur_conf->beacon_interval * + qi.tqi_readyTime = (TU_TO_USEC(cur_conf->beacon_interval) * ATH_CABQ_READY_TIME) / 100; ath_txq_update(sc, qnum, &qi);
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