[PATCH] ath9k: fix checks for first subframe delimiter padding
From: Felix Fietkau <hidden>
Date: 2011-08-29 10:51:06
Subsystem:
atheros ath generic utilities, qualcomm atheros ath9k wireless driver, the rest · Maintainers:
Jeff Johnson, Toke Høiland-Jørgensen, Linus Torvalds
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 <redacted> Cc: Rajkumar Manoharan <redacted> --- drivers/net/wireless/ath/ath9k/reg.h | 1 + drivers/net/wireless/ath/ath9k/xmit.c | 4 +++- 2 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index a3b8bbc..989514a 100644
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h@@ -1131,6 +1131,7 @@ 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_MIN_PKT_SIZE_DISABLE 0x00800000 #define AR_ENT_OTP_MPSD 0x00800000 #define AR_CH0_BB_DPLL1 0x16180
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 5e29829..ad3fcd2 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c@@ -692,7 +692,9 @@ 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 && (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) && + !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); /*
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1.7.3.2