ath9k: fix invalid noisefloor measurement values in ht20 mode

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22361 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/mac80211/patches/530-ath9k_nf_fix.patch b/package/mac80211/patches/530-ath9k_nf_fix.patch
new file mode 100644 (file)
index 0000000..081c2ab
--- /dev/null
+++ b/package/mac80211/patches/530-ath9k_nf_fix.patch
@@ -0,0 +1,46 @@
+--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
++++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
+@@ -1508,6 +1508,9 @@ static void ar5008_hw_do_getnf(struct at
+       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);
+ 
+--- 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 at
+       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 at
+       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)
+--- 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 at
+       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);
+