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-rw-r--r--package/mac80211/patches/543-ath9k_fix_half_quarter_rx_latency.patch32
1 files changed, 32 insertions, 0 deletions
diff --git a/package/mac80211/patches/543-ath9k_fix_half_quarter_rx_latency.patch b/package/mac80211/patches/543-ath9k_fix_half_quarter_rx_latency.patch
new file mode 100644
index 0000000000..45246ea468
--- /dev/null
+++ b/package/mac80211/patches/543-ath9k_fix_half_quarter_rx_latency.patch
@@ -0,0 +1,32 @@
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1006,16 +1006,26 @@ void ath9k_hw_init_global_settings(struc
+
+ if (IS_CHAN_HALF_RATE(chan)) {
+ eifs = 175;
+- rx_lat *= 2;
++
++ if (!AR_SREV_9300_20_OR_LATER(ah))
++ rx_lat = 10;
++ else
++ rx_lat *= 2;
++
+ tx_lat *= 2;
+ if (IS_CHAN_A_FAST_CLOCK(ah, chan))
+- tx_lat += 11;
++ tx_lat += 11;
+
+ slottime = 13;
+ sifstime = 32;
+ } else if (IS_CHAN_QUARTER_RATE(chan)) {
+ eifs = 340;
+- rx_lat = (rx_lat * 4) - 1;
++
++ if (!AR_SREV_9300_20_OR_LATER(ah))
++ rx_lat = 20;
++ else
++ rx_lat = (rx_lat * 4) - 1;
++
+ tx_lat *= 4;
+ if (IS_CHAN_A_FAST_CLOCK(ah, chan))
+ tx_lat += 22;