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ath9k: fix checks for first subframe delimiter padding

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The commit "ath9k_hw: Fix exceed transmission burst-time of 5GHz" added
a padding of 60 delimiters on the first subframe to work around an issue
on AR9380, but it lacked the checks to prevent it from being applied to
pre-AR9380, enterprise AR9380 or AR9580+

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2011-08-29 18:57:54 +02:00 committed by John W. Linville
parent 2a36a0ec15
commit 3459731a39
2 changed files with 3 additions and 2 deletions
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2
drivers/net/wireless/ath/ath9k/reg.h
View File

@ -1132,7 +1132,7 @@ enum {
#define AR_INTR_PRIO_ASYNC_ENABLE (AR_SREV_9340(ah) ? 0x4094 : 0x40d4)
#define AR_ENT_OTP 0x40d8
#define AR_ENT_OTP_CHAIN2_DISABLE 0x00020000
#define AR_ENT_OTP_MPSD 0x00800000
#define AR_ENT_OTP_MIN_PKT_SIZE_DISABLE 0x00800000
#define AR_CH0_BB_DPLL1 0x16180
#define AR_CH0_BB_DPLL1_REFDIV 0xF8000000

3
drivers/net/wireless/ath/ath9k/xmit.c
View File

@ -709,7 +709,8 @@ static int ath_compute_num_delims(struct ath_softc *sc, struct ath_atx_tid *tid,
* Add delimiter when using RTS/CTS with aggregation
* and non enterprise AR9003 card
*/
if (first_subfrm)
if (first_subfrm && !AR_SREV_9580_10_OR_LATER(sc->sc_ah) &&
(sc->sc_ah->ent_mode & AR_ENT_OTP_MIN_PKT_SIZE_DISABLE))
ndelim = max(ndelim, FIRST_DESC_NDELIMS);
/*