[PATCH 1/3] wifi: mt76: mt7925: prevent multiple scan commands

[Mingyen Hsieh]

From: Ming Yen Hsieh <mingyen.hsieh at mediatek.com>

Add a check to ensure only one scan command is active at a time
by testing the MT76_HW_SCANNING state.

Fixes: c948b5da6bbe ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips")
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh at mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/mt7925/mcu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
index 71d721ded9c1..8909d76f4795 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
@@ -2791,6 +2791,9 @@ int mt7925_mcu_hw_scan(struct mt76_phy *phy, struct ieee80211_vif *vif,
 	struct tlv *tlv;
 	int max_len;
 
+	if (test_bit(MT76_HW_SCANNING, &phy->state))
+		return -EBUSY;
+
 	max_len = sizeof(*hdr) + sizeof(*req) + sizeof(*ssid) +
 		  sizeof(*bssid) * MT7925_RNR_SCAN_MAX_BSSIDS +
 		  sizeof(*chan_info) + sizeof(*misc) + sizeof(*ie);
-- 
2.34.1