1 files changed, 35 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/ath9k/354-ath9k-force-rx_clear-when-disabling-rx.patch b/package/kernel/mac80211/patches/ath9k/354-ath9k-force-rx_clear-when-disabling-rx.patch
new file mode 100644
index 0000000000..8aaccf49b4
--- /dev/null
+++ b/package/kernel/mac80211/patches/ath9k/354-ath9k-force-rx_clear-when-disabling-rx.patch
@@ -0,0 +1,35 @@
+From: Felix Fietkau <nbd@openwrt.org>
+Date: Sun, 7 Jun 2015 13:53:35 +0200
+Subject: [PATCH] ath9k: force rx_clear when disabling rx
+
+This makes stopping Rx more reliable and should reduce the frequency of
+Rx related DMA stop warnings. Don't use rx_clear in TX99 mode.
+
+Cc: stable@vger.kernel.org
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/mac.c
++++ b/drivers/net/wireless/ath/ath9k/mac.c
+@@ -678,13 +678,18 @@ void ath9k_hw_startpcureceive(struct ath
+ 
+ 	ath9k_ani_reset(ah, is_scanning);
+ 
+-	REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
++	REG_CLR_BIT(ah, AR_DIAG_SW,
++		    AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT | AR_DIAG_FORCE_RX_CLEAR);
+ }
+ EXPORT_SYMBOL(ath9k_hw_startpcureceive);
+ 
+ void ath9k_hw_abortpcurecv(struct ath_hw *ah)
+ {
+-	REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_ABORT | AR_DIAG_RX_DIS);
++	u32 reg = AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT;
++
++	if (!IS_ENABLED(CPTCFG_ATH9K_TX99))
++		reg |= AR_DIAG_FORCE_RX_CLEAR;
++	REG_SET_BIT(ah, AR_DIAG_SW, reg);
+ 
+ 	ath9k_hw_disable_mib_counters(ah);
+ }