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ath5k: fix SIFS time handling

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ath5k uses 8 usec as a sifs time, extracted from the initvals, whereas the
standard requires a sifs time of 10. The difference originates from the fact
that the SIFS register has an offset of 2 usec.
Fix the SIFS time definition to use the standard value of 10 usec and subtract
2 usecs when writing the SIFS register.

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 23:10:20 +02:00
committed by John W. Linville
parent a27049e2c9
commit 488a50176c
2 changed files with 2 additions and 3 deletions
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drivers/net/wireless/ath/ath5k/qcu.c
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@@ -519,7 +519,7 @@ int ath5k_hw_set_ifs_intervals(struct ath5k_hw *ah, unsigned int slot_time)
return -EINVAL;
sifs = ath5k_hw_get_default_sifs(ah);
sifs_clock = ath5k_hw_htoclock(ah, sifs);
sifs_clock = ath5k_hw_htoclock(ah, sifs - 2);
/* EIFS
* Txtime of ack at lowest rate + SIFS + DIFS