From: Nicolas Cavallari Date: Thu, 10 Nov 2022 15:39:51 +0000 (+0100) Subject: wifi: mt76: mt7915: Fix chainmask calculation on mt7915 DBDC X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=de147cc28985a2a09e5d6d179fc5ef59b22fc058;p=linux.git wifi: mt76: mt7915: Fix chainmask calculation on mt7915 DBDC mt7915 does not have a per-band number of chains unlike the other chips, it only has a total number of chains. Yet the current code would consider the total number as a per-band number. For example, it would report that a 2x2 + 2x2 DBDC card have 4 chains on each band and set chainmask to 0b1111 for the first interface and 0b11110000 for the second. Fixes: 99ad32a4ca3a ("mt76: mt7915: add support for MT7986") Co-developed-by: Felix Fietkau Signed-off-by: Nicolas Cavallari Signed-off-by: Felix Fietkau --- diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c index 83bced0c07859..0bce0ce51be00 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c @@ -194,6 +194,7 @@ void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev, nss = path; if (dev->dbdc_support) { if (is_mt7915(&dev->mt76)) { + path = min_t(u8, path, 2); nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B0, eeprom[MT_EE_WIFI_CONF + 3]); if (phy->band_idx)