ath9k: Fix rx data corruption

Setting bit 20 and 25 of 0x8344 can cause occasional rx data
corruption, clear them to fix this issue.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index af5bb50a2e8..4731ad2d999 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1273,6 +1273,15 @@ static void ath9k_hw_override_ini(struct ath_hw *ah,
          */
         REG_SET_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
 
+        if (AR_SREV_9280_10_OR_LATER(ah)) {
+                val = REG_READ(ah, AR_PCU_MISC_MODE2) &
+                               (~AR_PCU_MISC_MODE2_HWWAR1);
+
+                if (AR_SREV_9287_10_OR_LATER(ah))
+                        val = val & (~AR_PCU_MISC_MODE2_HWWAR2);
+
+                REG_WRITE(ah, AR_PCU_MISC_MODE2, val);
+        }
 
         if (!AR_SREV_5416_20_OR_LATER(ah) ||
             AR_SREV_9280_10_OR_LATER(ah))