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[PATCH] mt76: mt7915: fix the nss setting in bitrates

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From: MeiChia Chiu <meichia.chiu@xxxxxxxxxxxx>

without this change, the fixed MCS only supports 1 Nss.

Fixes: 70fd1333cd32f ("mt76: mt7915: rework .set_bitrate_mask() to support more options")
Reviewed-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
Signed-off-by: MeiChia Chiu <meichia.chiu@xxxxxxxxxxxx>
---
 drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 66f8daf3168c..69c5ac10e114 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -1420,9 +1420,12 @@ mt7915_mcu_add_rate_ctrl_fixed(struct mt7915_dev *dev,
 			phy.sgi |= gi << (i << (_he));				\
 			phy.he_ltf |= mask->control[band].he_ltf << (i << (_he));\
 		}								\
-		for (i = 0; i < ARRAY_SIZE(mask->control[band]._mcs); i++) 	\
-			nrates += hweight16(mask->control[band]._mcs[i]);  	\
-		phy.mcs = ffs(mask->control[band]._mcs[0]) - 1;			\
+		for (i = 0; i < ARRAY_SIZE(mask->control[band]._mcs); i++) {	\
+			if (!mask->control[band]._mcs[i])			\
+				continue;					\
+			nrates += hweight16(mask->control[band]._mcs[i]);	\
+			phy.mcs = ffs(mask->control[band]._mcs[i]) - 1;		\
+		}								\
 	} while (0)
 
 	if (sta->he_cap.has_he) {
-- 
2.29.2




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