Some RT28xx/RT30xx devices don't support 802.11n, when they are combined with
the RF2020 chipset. Ensure that HT is disabled for these devices.
Signed-off-by: Gertjan van Wingerde <gwingerde@xxxxxxxxx>
---
drivers/net/wireless/rt2x00/rt2800lib.c | 59 +++++++++++++++++--------------
1 files changed, 32 insertions(+), 27 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index e94f1e1..ac393c3 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -2070,34 +2070,39 @@ int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
}
/*
- * Initialize HT information.
+ * Initialize HT information, unless when we're on RF2020, which doesn't
+ * support 802.11n.
*/
- spec->ht.ht_supported = true;
- spec->ht.cap =
- IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
- IEEE80211_HT_CAP_GRN_FLD |
- IEEE80211_HT_CAP_SGI_20 |
- IEEE80211_HT_CAP_SGI_40 |
- IEEE80211_HT_CAP_TX_STBC |
- IEEE80211_HT_CAP_RX_STBC |
- IEEE80211_HT_CAP_PSMP_SUPPORT;
- spec->ht.ampdu_factor = 3;
- spec->ht.ampdu_density = 4;
- spec->ht.mcs.tx_params =
- IEEE80211_HT_MCS_TX_DEFINED |
- IEEE80211_HT_MCS_TX_RX_DIFF |
- ((rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TXPATH) - 1) <<
- IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
-
- switch (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RXPATH)) {
- case 3:
- spec->ht.mcs.rx_mask[2] = 0xff;
- case 2:
- spec->ht.mcs.rx_mask[1] = 0xff;
- case 1:
- spec->ht.mcs.rx_mask[0] = 0xff;
- spec->ht.mcs.rx_mask[4] = 0x1; /* MCS32 */
- break;
+ if (!rt2x00_rf(chip, RF2020)) {
+ spec->ht.ht_supported = true;
+ spec->ht.cap =
+ IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
+ IEEE80211_HT_CAP_GRN_FLD |
+ IEEE80211_HT_CAP_SGI_20 |
+ IEEE80211_HT_CAP_SGI_40 |
+ IEEE80211_HT_CAP_TX_STBC |
+ IEEE80211_HT_CAP_RX_STBC |
+ IEEE80211_HT_CAP_PSMP_SUPPORT;
+ spec->ht.ampdu_factor = 3;
+ spec->ht.ampdu_density = 4;
+ spec->ht.mcs.tx_params =
+ IEEE80211_HT_MCS_TX_DEFINED |
+ IEEE80211_HT_MCS_TX_RX_DIFF |
+ ((rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TXPATH) - 1) <<
+ IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
+
+ switch (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RXPATH)) {
+ case 3:
+ spec->ht.mcs.rx_mask[2] = 0xff;
+ case 2:
+ spec->ht.mcs.rx_mask[1] = 0xff;
+ case 1:
+ spec->ht.mcs.rx_mask[0] = 0xff;
+ spec->ht.mcs.rx_mask[4] = 0x1; /* MCS32 */
+ break;
+ }
+ } else {
+ spec->ht.ht_supported = false;
}
/*
--
1.6.5.3
--
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