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ath5k: fix short preamble rate duration value

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Subtract the difference in preamble duration (in usec) from the value
returned by ieee80211_generic_frame_duration.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau
2011-04-09 23:10:19 +02:00
committed by John W. Linville
parent 6d7b97b23e
commit a27049e2c9
3 changed files with 14 additions and 21 deletions
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2
drivers/net/wireless/ath/ath5k/qcu.c
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@@ -550,7 +550,7 @@ int ath5k_hw_set_ifs_intervals(struct ath5k_hw *ah, unsigned int slot_time)
else
rate = &sc->sbands[IEEE80211_BAND_2GHZ].bitrates[0];
ack_tx_time = ath5k_hw_get_frame_duration(ah, 10, rate);
ack_tx_time = ath5k_hw_get_frame_duration(ah, 10, rate, false);
/* ack_tx_time includes an SIFS already */
eifs = ack_tx_time + sifs + 2 * slot_time;