From: Felix Fietkau <nbd@openwrt.org>
Date: Fri, 23 Jul 2010 02:22:52 +0000 (+0000)
Subject: ath9k: simplify noise floor calibration chainmask calculation
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=ce8858061bafe9dcf89dc6a60b446e857cb78862;p=openwrt%2Fstaging%2F981213.git

ath9k: simplify noise floor calibration chainmask calculation

SVN-Revision: 22362
---

diff --git a/package/mac80211/patches/531-ath9k_nf_cleanup.patch b/package/mac80211/patches/531-ath9k_nf_cleanup.patch
new file mode 100644
index 0000000000..f038559a44
--- /dev/null
+++ b/package/mac80211/patches/531-ath9k_nf_cleanup.patch
@@ -0,0 +1,30 @@
+--- a/drivers/net/wireless/ath/ath9k/calib.c
++++ b/drivers/net/wireless/ath/ath9k/calib.c
+@@ -172,26 +172,9 @@ void ath9k_hw_loadnf(struct ath_hw *ah, 
+ 	struct ath9k_nfcal_hist *h;
+ 	unsigned i, j;
+ 	int32_t val;
+-	u8 chainmask;
++	u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask;
+ 	struct ath_common *common = ath9k_hw_common(ah);
+ 
+-	if (AR_SREV_9300_20_OR_LATER(ah))
+-		chainmask = 0x3F;
+-	else if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
+-		chainmask = 0x9;
+-	else if (AR_SREV_9280(ah) || AR_SREV_9287(ah)) {
+-		if ((ah->rxchainmask & 0x2) || (ah->rxchainmask & 0x4))
+-			chainmask = 0x1B;
+-		else
+-			chainmask = 0x09;
+-	} else {
+-		if (ah->rxchainmask & 0x4)
+-			chainmask = 0x3F;
+-		else if (ah->rxchainmask & 0x2)
+-			chainmask = 0x1B;
+-		else
+-			chainmask = 0x09;
+-	}
+ 	h = ah->nfCalHist;
+ 
+ 	for (i = 0; i < NUM_NF_READINGS; i++) {