From: Ivo van Doorn Date: Sun, 18 Jan 2009 19:15:24 +0000 (+0100) Subject: rt2x00: Fix TX rate short preamble detection X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7490889c105764d80af58dee5983d91a84e4aec8;p=openwrt%2Fstaging%2Fblogic.git rt2x00: Fix TX rate short preamble detection Mac80211 provides 2 structures to handle bitrates, namely ieee80211_rate and ieee80211_tx_rate. To determine the short preamble mode for an outgoing frame, the flag IEEE80211_TX_RC_USE_SHORT_PREAMBLE must be checked on ieee80211_tx_rate and not ieee80211_rate (which rt2x00 did). This fixes a regression which was triggered in 2.6.29-rcX as reported by Chris Clayton. Signed-off-by: Ivo van Doorn Tested-By: Chris Clayton Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c index 746a8f36b931..0709decec9c2 100644 --- a/drivers/net/wireless/rt2x00/rt2x00queue.c +++ b/drivers/net/wireless/rt2x00/rt2x00queue.c @@ -154,6 +154,7 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)entry->skb->data; + struct ieee80211_tx_rate *txrate = &tx_info->control.rates[0]; struct ieee80211_rate *rate = ieee80211_get_tx_rate(rt2x00dev->hw, tx_info); const struct rt2x00_rate *hwrate; @@ -313,7 +314,7 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, * When preamble is enabled we should set the * preamble bit for the signal. */ - if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) + if (txrate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) txdesc->signal |= 0x08; } }