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ath9k_hw: Change DCU backoff thresh for AR9340

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By changing DCU backoff threshold for AR9340 to 1, helps to
reduce rx overrurns seen while running bidirectional traffic.

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rajkumar Manoharan 2011-05-09 19:11:27 +05:30 committed by John W. Linville
parent 165af96d56
commit 94333f59cb
1 changed files with 7 additions and 2 deletions
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9
drivers/net/wireless/ath/ath9k/mac.c
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@ -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),