linux-kernel - [PATCH 6.8 255/715] wifi: mt76: fix the issue of missing txpwr settings from ch153 to ch177

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Message-ID: <20240324223455.1342824-256-sashal@kernel.org>
Date: Sun, 24 Mar 2024 18:27:14 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Ming Yen Hsieh <mingyen.hsieh@...iatek.com>,
	Felix Fietkau <nbd@....name>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.8 255/715] wifi: mt76: fix the issue of missing txpwr settings from ch153 to ch177

From: Ming Yen Hsieh <mingyen.hsieh@...iatek.com>

[ Upstream commit e9a46175a79fbc591c48d433020444b8fa2750ee ]

Because the number of channels to be configured is calculated using the %,
and it results in 0 when there's an exact division, this leads to some
channels not having their tx power configured.

Fixes: 7801da338856 ("wifi: mt76: mt7921: enable set txpower for UNII-4")
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@...iatek.com>
Signed-off-by: Felix Fietkau <nbd@....name>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
index ea7ffa16a4b12..ae19174b46ee5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
@@ -2101,7 +2101,7 @@ mt76_connac_mcu_rate_txpower_band(struct mt76_phy *phy,
 		int j, msg_len, num_ch;
 		struct sk_buff *skb;
 
-		num_ch = i == batch_size - 1 ? n_chan % batch_len : batch_len;
+		num_ch = i == batch_size - 1 ? n_chan - i * batch_len : batch_len;
 		msg_len = sizeof(tx_power_tlv) + num_ch * sizeof(sku_tlbv);
 		skb = mt76_mcu_msg_alloc(dev, NULL, msg_len);
 		if (!skb) {
-- 
2.43.0