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Commit 94333f59 authored by Rajkumar Manoharan's avatar Rajkumar Manoharan Committed by John W. Linville
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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: default avatarRajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 165af96d

drivers/net/wireless/ath/ath9k/mac.c

+7 −2
Original line number Diff line number Diff line
@@ -430,6 +430,11 @@ 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);



	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);