From: Felix Fietkau Date: Sun, 9 Mar 2014 10:02:54 +0000 (+0100) Subject: ath9k: fix ready time of the multicast buffer queue X-Git-Tag: v3.12.20~25 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=271c57edfaa6b564032024711fdbc6608ea83129;p=thirdparty%2Fkernel%2Fstable.git ath9k: fix ready time of the multicast buffer queue 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 Signed-off-by: John W. Linville Signed-off-by: Jiri Slaby --- diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index ba39178a94abf..00e3f49fcf9b9 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -1718,7 +1718,7 @@ int ath_cabq_update(struct ath_softc *sc) else if (sc->config.cabqReadytime > ATH9K_READY_TIME_HI_BOUND) sc->config.cabqReadytime = ATH9K_READY_TIME_HI_BOUND; - qi.tqi_readyTime = (cur_conf->beacon_interval * + qi.tqi_readyTime = (TU_TO_USEC(cur_conf->beacon_interval) * sc->config.cabqReadytime) / 100; ath_txq_update(sc, qnum, &qi);