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ath9k: always use SIFS times from OFDM for 5/10 MHz

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5/10 MHz channels should always use SIFS times as defined in IEEE
802.11-2012 18.4.4 (OFDM PHY characteristics). This makes it compatible
to ath5k, which does the same.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Simon Wunderlich 2013-08-14 08:01:30 +02:00 committed by John W. Linville
parent 67d0cf50bd
commit 92367fe7f2
1 changed files with 2 additions and 3 deletions
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5
drivers/net/wireless/ath/ath9k/hw.c
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@ -1069,7 +1069,7 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah)
if (IS_CHAN_A_FAST_CLOCK(ah, chan))
tx_lat += 11;
sifstime *= 2;
sifstime = 32;
ack_offset = 16;
slottime = 13;
} else if (IS_CHAN_QUARTER_RATE(chan)) {
@ -1079,7 +1079,7 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah)
if (IS_CHAN_A_FAST_CLOCK(ah, chan))
tx_lat += 22;
sifstime *= 4;
sifstime = 64;
ack_offset = 32;
slottime = 21;
} else {
@ -1116,7 +1116,6 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah)
ctstimeout += 48 - sifstime - ah->slottime;
}
ath9k_hw_set_sifs_time(ah, sifstime);
ath9k_hw_setslottime(ah, slottime);
ath9k_hw_set_ack_timeout(ah, acktimeout);