From: Rajkumar Manoharan Date: Mon, 9 May 2011 13:41:27 +0000 (+0530) Subject: ath9k_hw: Change DCU backoff thresh for AR9340 X-Git-Tag: v3.0-rc1~377^2~54^2^2~72 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=94333f59cba08a1f6513ecd7e2fc5b85c1949a98;p=~shefty%2Frdma-dev.git ath9k_hw: Change DCU backoff thresh for AR9340 By changing DCU backoff threshold for AR9340 to 1, helps to reduce rx overrurns seen while running bidirectional traffic. Signed-off-by: Rajkumar Manoharan Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c index 9cf7a7d0e11..bd6d2b9d736 100644 --- a/drivers/net/wireless/ath/ath9k/mac.c +++ b/drivers/net/wireless/ath/ath9k/mac.c @@ -430,8 +430,13 @@ bool ath9k_hw_resettxqueue(struct ath_hw *ah, u32 q) SM(qi->tqi_shretry, AR_D_RETRY_LIMIT_FR_SH)); REG_WRITE(ah, AR_QMISC(q), AR_Q_MISC_DCU_EARLY_TERM_REQ); - REG_WRITE(ah, AR_DMISC(q), - AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x2); + + if (AR_SREV_9340(ah)) + REG_WRITE(ah, AR_DMISC(q), + AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x1); + else + REG_WRITE(ah, AR_DMISC(q), + AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x2); if (qi->tqi_cbrPeriod) { REG_WRITE(ah, AR_QCBRCFG(q),