linux-kernel - [PATCH AUTOSEL 6.5 14/30] wifi: mt76: get rid of false alamrs of tx emission issues

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Message-ID: <20231107120922.3757126-14-sashal@kernel.org>
Date:   Tue,  7 Nov 2023 07:08:29 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     StanleyYP Wang <StanleyYP.Wang@...iatek.com>,
        Evelyn Tsai <evelyn.tsai@...iatek.com>,
        Shayne Chen <shayne.chen@...iatek.com>,
        Felix Fietkau <nbd@....name>, Sasha Levin <sashal@...nel.org>,
        lorenzo@...nel.org, ryder.lee@...iatek.com, kvalo@...nel.org,
        matthias.bgg@...il.com, angelogioacchino.delregno@...labora.com,
        chui-hao.chiu@...iatek.com, Bo.Jiao@...iatek.com,
        howard-yh.hsu@...iatek.com, meichia.chiu@...iatek.com,
        linux-wireless@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: [PATCH AUTOSEL 6.5 14/30] wifi: mt76: get rid of false alamrs of tx emission issues

From: StanleyYP Wang <StanleyYP.Wang@...iatek.com>

[ Upstream commit 413f05d68d11981f5984b49214d3a5a0d88079b1 ]

When the set_chan_info command is set with CH_SWITCH_NORMAL reason,
even if the action is UNI_CHANNEL_RX_PATH, it'll still generate some
unexpected tones, which might confuse DFS CAC tests that there are some
tone leakages. To get rid of these kinds of false alarms, always bypass
DPD calibration when IEEE80211_CONF_IDLE is set.

Reviewed-by: Evelyn Tsai <evelyn.tsai@...iatek.com>
Signed-off-by: StanleyYP Wang <StanleyYP.Wang@...iatek.com>
Signed-off-by: Shayne Chen <shayne.chen@...iatek.com>
Signed-off-by: Felix Fietkau <nbd@....name>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 6 +++---
 drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 1a8611c6b684d..d46db4b04b78b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -2687,10 +2687,10 @@ int mt7915_mcu_set_chan_info(struct mt7915_phy *phy, int cmd)
 	if (mt76_connac_spe_idx(phy->mt76->antenna_mask))
 		req.tx_path_num = fls(phy->mt76->antenna_mask);
 
-	if (cmd == MCU_EXT_CMD(SET_RX_PATH) ||
-	    dev->mt76.hw->conf.flags & IEEE80211_CONF_MONITOR)
+	if (dev->mt76.hw->conf.flags & IEEE80211_CONF_MONITOR)
 		req.switch_reason = CH_SWITCH_NORMAL;
-	else if (phy->mt76->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
+	else if (phy->mt76->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL ||
+		 phy->mt76->hw->conf.flags & IEEE80211_CONF_IDLE)
 		req.switch_reason = CH_SWITCH_SCAN_BYPASS_DPD;
 	else if (!cfg80211_reg_can_beacon(phy->mt76->hw->wiphy, chandef,
 					  NL80211_IFTYPE_AP))
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index 62a02b03d83ba..c22a7ec285cd4 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -2861,10 +2861,10 @@ int mt7996_mcu_set_chan_info(struct mt7996_phy *phy, u16 tag)
 		.channel_band = ch_band[chandef->chan->band],
 	};
 
-	if (tag == UNI_CHANNEL_RX_PATH ||
-	    dev->mt76.hw->conf.flags & IEEE80211_CONF_MONITOR)
+	if (dev->mt76.hw->conf.flags & IEEE80211_CONF_MONITOR)
 		req.switch_reason = CH_SWITCH_NORMAL;
-	else if (phy->mt76->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
+	else if (phy->mt76->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL ||
+		 phy->mt76->hw->conf.flags & IEEE80211_CONF_IDLE)
 		req.switch_reason = CH_SWITCH_SCAN_BYPASS_DPD;
 	else if (!cfg80211_reg_can_beacon(phy->mt76->hw->wiphy, chandef,
 					  NL80211_IFTYPE_AP))
-- 
2.42.0