diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2010-07-23 04:07:48 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-07-26 15:32:42 -0400 |
| commit | 866b7780fce95989dfc85f3e372635f5147e0d90 (patch) | |
| tree | 795a2705b44be3f60f3d4a0ff46fddbee0337197 | |
| parent | 4cee78614cfa046a26c4fbf313d5bbacb3ad8efc (diff) | |
ath9k_hw: fix invalid extension channel noisefloor readings in HT20
When the hardware is configured in HT20 mode, noise floor readings for
the extension channel often return invalid values, which keep the
values in the NF history buffer at the hardware-specific maximum limit.
Fix this by discarding the extension channel values when in HT20 mode.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar5008_phy.c | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9002_phy.c | 6 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_phy.c | 3 |
3 files changed, 10 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar5008_phy.c b/drivers/net/wireless/ath/ath9k/ar5008_phy.c index 4a910b78de5..3d2c8679bc8 100644 --- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c +++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c @@ -1506,6 +1506,9 @@ static void ar5008_hw_do_getnf(struct ath_hw *ah, nf = MS(REG_READ(ah, AR_PHY_CH2_CCA), AR_PHY_CH2_MINCCA_PWR); nfarray[2] = sign_extend(nf, 9); + if (!IS_CHAN_HT40(ah->curchan)) + return; + nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR_PHY_EXT_MINCCA_PWR); nfarray[3] = sign_extend(nf, 9); diff --git a/drivers/net/wireless/ath/ath9k/ar9002_phy.c b/drivers/net/wireless/ath/ath9k/ar9002_phy.c index 4922b8d4a93..adbf031fbc5 100644 --- a/drivers/net/wireless/ath/ath9k/ar9002_phy.c +++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.c @@ -477,7 +477,8 @@ static void ar9002_hw_do_getnf(struct ath_hw *ah, nfarray[0] = sign_extend(nf, 9); nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR9280_PHY_EXT_MINCCA_PWR); - nfarray[3] = sign_extend(nf, 9); + if (IS_CHAN_HT40(ah->curchan)) + nfarray[3] = sign_extend(nf, 9); if (AR_SREV_9285(ah) || AR_SREV_9271(ah)) return; @@ -486,7 +487,8 @@ static void ar9002_hw_do_getnf(struct ath_hw *ah, nfarray[1] = sign_extend(nf, 9); nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR9280_PHY_CH1_EXT_MINCCA_PWR); - nfarray[4] = sign_extend(nf, 9); + if (IS_CHAN_HT40(ah->curchan)) + nfarray[4] = sign_extend(nf, 9); } static void ar9002_hw_set_nf_limits(struct ath_hw *ah) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c index 7c93338540a..a753a431bb1 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c @@ -1029,6 +1029,9 @@ static void ar9003_hw_do_getnf(struct ath_hw *ah, nf = MS(REG_READ(ah, AR_PHY_CCA_2), AR_PHY_CH2_MINCCA_PWR); nfarray[2] = sign_extend(nf, 9); + if (!IS_CHAN_HT40(ah->curchan)) + return; + nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR_PHY_EXT_MINCCA_PWR); nfarray[3] = sign_extend(nf, 9); |