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[1/4] wifi: mt76: mt7915: fix antenna selection with bad eeprom.

Message ID 20221110153953.22562-2-nicolas.cavallari@green-communications.fr
State New
Headers show
Series [1/4] wifi: mt76: mt7915: fix antenna selection with bad eeprom. | expand

Commit Message

Nicolas Cavallari Nov. 10, 2022, 3:39 p.m. UTC
If the nss value is zero in the eeprom, set it to the max.
This eeprom fragment from a mt7915 DBDC shows the problem:

00000190: 24 24 08 00 28 00 00 15 00 00 00 00 00 00 00 00

Fixes: 51a87540232c ("wifi: mt76: mt7915: rework eeprom tx paths and streams init")
Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
---
 drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
index e2482c65d639..83bced0c0785 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
@@ -208,6 +208,8 @@  void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev,
 			nss_max = 2;
 	}
 
+	if (!nss)
+		nss = nss_max;
 	nss = min_t(u8, min_t(u8, nss_max, nss), path);
 
 	mphy->chainmask = BIT(path) - 1;