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| author | Felix Fietkau <nbd@openwrt.org> | 2010-06-12 00:33:54 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-06-14 15:39:31 -0400 |
| commit | a6d2055b02dde1067075795274672720baadd3ca (patch) | |
| tree | ec2014019e26fc19be90c81c13373cbe1f7afe09 /drivers/net/wireless/ath/ath9k/hw.c | |
| parent | ebe297c35d5e7137a2d626b49b4c8c4c0ab4f242 (diff) | |
| download | linux-stable-a6d2055b02dde1067075795274672720baadd3ca.tar.gz linux-stable-a6d2055b02dde1067075795274672720baadd3ca.tar.bz2 linux-stable-a6d2055b02dde1067075795274672720baadd3ca.zip | |
ath9k: fix extending the rx timestamp with the hardware TSF
AR5416 and all newer chipsets use a 32 bit rx timestamp, so there
is no need to keep the 15 bit timestamp extending logic around.
This patch removes ath9k_hw_extend_tsf (replaced by a call to
ath9k_hw_gettsf64), and reduces the frequency of TSF reads, which
can improve performance in some cases.
This change also has the side effect of making rx timestamps
more accurate.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/hw.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hw.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 874c4e9d9899..1fa3fe7d5ae4 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -2616,21 +2616,6 @@ void ath9k_hw_set_tsfadjust(struct ath_hw *ah, u32 setting) } EXPORT_SYMBOL(ath9k_hw_set_tsfadjust); -/* - * Extend 15-bit time stamp from rx descriptor to - * a full 64-bit TSF using the current h/w TSF. -*/ -u64 ath9k_hw_extend_tsf(struct ath_hw *ah, u32 rstamp) -{ - u64 tsf; - - tsf = ath9k_hw_gettsf64(ah); - if ((tsf & 0x7fff) < rstamp) - tsf -= 0x8000; - return (tsf & ~0x7fff) | rstamp; -} -EXPORT_SYMBOL(ath9k_hw_extend_tsf); - void ath9k_hw_set11nmac2040(struct ath_hw *ah) { struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf; |