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[PATCH 5/5] ath9k: avoid rx frames with corrupted descriptor.

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Setting RX_ABORT/RX_DIS after MAC reset and clearing RX_ABORT/RX_DIS
after enbling RXE/RXDP to avoid rx frames with corrupted descriptor
status.

Signed-off-by: Senthil Balasubramanian <senthilkumar@xxxxxxxxxxx>
---
 drivers/net/wireless/ath9k/hw.c  |    8 ++++++++
 drivers/net/wireless/ath9k/mac.c |    3 +--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath9k/hw.c b/drivers/net/wireless/ath9k/hw.c
index 92cda20..209aada 100644
--- a/drivers/net/wireless/ath9k/hw.c
+++ b/drivers/net/wireless/ath9k/hw.c
@@ -1213,6 +1213,14 @@ struct ath_hal *ath9k_hw_attach(u16 devid, struct ath_softc *sc,
 static void ath9k_hw_override_ini(struct ath_hal *ah,
 				  struct ath9k_channel *chan)
 {
+	/* 
+	 * Set the RX_ABORT and RX_DIS and clear if off only after
+	 * RXE is set for MAC. This prevents frames with corrupted
+	 * descriptor status.
+	 */
+	REG_SET_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
+
+
 	if (!AR_SREV_5416_V20_OR_LATER(ah) ||
 	    AR_SREV_9280_10_OR_LATER(ah))
 		return;
diff --git a/drivers/net/wireless/ath9k/mac.c b/drivers/net/wireless/ath9k/mac.c
index 5254ea4..af32d09 100644
--- a/drivers/net/wireless/ath9k/mac.c
+++ b/drivers/net/wireless/ath9k/mac.c
@@ -916,12 +916,11 @@ void ath9k_hw_rxena(struct ath_hal *ah)
 
 void ath9k_hw_startpcureceive(struct ath_hal *ah)
 {
-	REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
-
 	ath9k_enable_mib_counters(ah);
 
 	ath9k_ani_reset(ah);
 
+	REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
 }
 
 void ath9k_hw_stoppcurecv(struct ath_hal *ah)
-- 
1.6.0.4

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