From: Felix Fietkau <nbd@openwrt.org>
Date: Wed, 10 Mar 2010 01:17:23 +0000 (+0000)
Subject: Revert "mac80211/ath9k: fix duration calculation for short-guard-interval frames... 
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=656de42f9ceee8f3c31af1001dac8558c91c7510;p=openwrt%2Fstaging%2Fluka.git

Revert "mac80211/ath9k: fix duration calculation for short-guard-interval frames (thanks to Duy Nguyen for pointing this out)" again It appears to be causing trouble at least with some clients.

SVN-Revision: 20115
---

diff --git a/package/mac80211/patches/560-minstrel_ht.patch b/package/mac80211/patches/560-minstrel_ht.patch
index 2f2aa9d398..6c3d08eac2 100644
--- a/package/mac80211/patches/560-minstrel_ht.patch
+++ b/package/mac80211/patches/560-minstrel_ht.patch
@@ -100,7 +100,7 @@
 +/* Transmission time for a packet containing (syms) symbols */
 +#define MCS_SYMBOL_TIME(sgi, syms)					\
 +	(sgi ?								\
-+	  ((syms) * 18 + 4) / 6 :	/* syms * 3.6 us */		\
++	  ((syms) * 18 + 4) / 5 :	/* syms * 3.6 us */		\
 +	  (syms) << 2			/* syms * 4 us */		\
 +	)
 +
diff --git a/package/mac80211/patches/580-ath9k_fix_duration_calculation.patch b/package/mac80211/patches/580-ath9k_fix_duration_calculation.patch
deleted file mode 100644
index 219e4ee363..0000000000
--- a/package/mac80211/patches/580-ath9k_fix_duration_calculation.patch
+++ /dev/null
@@ -1,14 +0,0 @@
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -27,9 +27,9 @@
- #define HT_STF                  4
- #define HT_LTF(_ns)             (4 * (_ns))
- #define SYMBOL_TIME(_ns)        ((_ns) << 2) /* ns * 4 us */
--#define SYMBOL_TIME_HALFGI(_ns) (((_ns) * 18 + 4) / 5)  /* ns * 3.6 us */
-+#define SYMBOL_TIME_HALFGI(_ns) (((_ns) * 18 + 4) / 6)  /* ns * 3.6 us */
- #define NUM_SYMBOLS_PER_USEC(_usec) (_usec >> 2)
--#define NUM_SYMBOLS_PER_USEC_HALFGI(_usec) (((_usec*5)-4)/18)
-+#define NUM_SYMBOLS_PER_USEC_HALFGI(_usec) (((_usec*6)-4)/18)
- 
- #define OFDM_SIFS_TIME    	    16
-