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| author | Felix Fietkau <nbd@openwrt.org> | 2011-07-19 06:42:26 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2011-07-19 06:42:26 +0000 |
| commit | 09caaff060529fe5ccf86c31679c63b49f721b50 (patch) | |
| tree | aa3437870b4a79c92ed3bc270c8b6362b8ad9215 | |
| parent | 8f3d723ac48e908db6b578146c128fa805dc5c97 (diff) | |
| download | upstream-09caaff060529fe5ccf86c31679c63b49f721b50.tar.gz upstream-09caaff060529fe5ccf86c31679c63b49f721b50.tar.bz2 upstream-09caaff060529fe5ccf86c31679c63b49f721b50.zip | |
ath9k: validate eeprom chainmask settings, some Ubiquiti devices (and maybe others) contain bogus data, which breaks wifi
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27688 3c298f89-4303-0410-b956-a3cf2f4a3e73
| -rw-r--r-- | package/mac80211/patches/580-ath9k_fixup_chainmask.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/package/mac80211/patches/580-ath9k_fixup_chainmask.patch b/package/mac80211/patches/580-ath9k_fixup_chainmask.patch new file mode 100644 index 0000000000..07e78d3b30 --- /dev/null +++ b/package/mac80211/patches/580-ath9k_fixup_chainmask.patch @@ -0,0 +1,51 @@ +--- a/drivers/net/wireless/ath/ath9k/hw.c ++++ b/drivers/net/wireless/ath/ath9k/hw.c +@@ -2007,12 +2007,22 @@ EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_ti + /* HW Capabilities */ + /*******************/ + ++static u8 fixup_chainmask(u8 chip_chainmask, u8 eeprom_chainmask) ++{ ++ eeprom_chainmask &= chip_chainmask; ++ if (eeprom_chainmask) ++ return eeprom_chainmask; ++ else ++ return chip_chainmask; ++} ++ + int ath9k_hw_fill_cap_info(struct ath_hw *ah) + { + struct ath9k_hw_capabilities *pCap = &ah->caps; + struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah); + struct ath_common *common = ath9k_hw_common(ah); + struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; ++ unsigned int chip_chainmask; + + u16 eeval; + u8 ant_div_ctl1, tx_chainmask, rx_chainmask; +@@ -2049,6 +2059,15 @@ int ath9k_hw_fill_cap_info(struct ath_hw + if (eeval & AR5416_OPFLAGS_11G) + pCap->hw_caps |= ATH9K_HW_CAP_2GHZ; + ++ if (AR_SREV_9485(ah) || AR_SREV_9285(ah) || AR_SREV_9330(ah)) ++ chip_chainmask = 1; ++ else if (!AR_SREV_9280_20_OR_LATER(ah)) ++ chip_chainmask = 7; ++ else if (!AR_SREV_9300_20_OR_LATER(ah) || AR_SREV_9340(ah)) ++ chip_chainmask = 3; ++ else ++ chip_chainmask = 7; ++ + pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK); + /* + * For AR9271 we will temporarilly uses the rx chainmax as read from +@@ -2065,6 +2084,9 @@ int ath9k_hw_fill_cap_info(struct ath_hw + /* Use rx_chainmask from EEPROM. */ + pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK); + ++ pCap->tx_chainmask = fixup_chainmask(chip_chainmask, pCap->tx_chainmask); ++ pCap->rx_chainmask = fixup_chainmask(chip_chainmask, pCap->rx_chainmask); ++ + ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA; + + /* enable key search for every frame in an aggregate */ |