From 6f4810101a629b31b5427872a09ea092cfc5c4bd Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Thu, 20 Jan 2011 17:47:39 -0800 Subject: ath9k_hw: disabled PAPRD for AR9003 AR9003's PAPRD was enabled prematurely, and is causing some large discrepancies on throughput and network connectivity. For example downlink (RX) throughput against an AR9280 AP can vary widlely from 43-73 Mbit/s while disabling this gets AR9382 (2x2) up to around 93 Mbit/s in a 2.4 GHz HT20 setup. Cc: stable@kernel.org Cc: Paul Shaw Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/hw.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/net/wireless/ath/ath9k/hw.c') diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 1afb8bb85756..9f01e50d5cda 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -369,6 +369,9 @@ static void ath9k_hw_init_config(struct ath_hw *ah) else ah->config.ht_enable = 0; + /* PAPRD needs some more work to be enabled */ + ah->config.paprd_disable = 1; + ah->config.rx_intr_mitigation = true; ah->config.pcieSerDesWrite = true; @@ -1933,7 +1936,8 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah) pCap->rx_status_len = sizeof(struct ar9003_rxs); pCap->tx_desc_len = sizeof(struct ar9003_txc); pCap->txs_len = sizeof(struct ar9003_txs); - if (ah->eep_ops->get_eeprom(ah, EEP_PAPRD)) + if (!ah->config.paprd_disable && + ah->eep_ops->get_eeprom(ah, EEP_PAPRD)) pCap->hw_caps |= ATH9K_HW_CAP_PAPRD; } else { pCap->tx_desc_len = sizeof(struct ath_desc); -- cgit v1.2.3