[PATCH v3 5/7] wifi: mt76: connac: accept hw scan request at a time

[sean.wang at mediatek.com]

From: Sean Wang <sean.wang at mediatek.com>

The current hw scan cannot accept multiple hw scan requests at a time, we
return the proper error code when the hw scan is still undergoing.

Signed-off-by: Sean Wang <sean.wang at mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
index fffdb6976e52..e5c925ec8691 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
@@ -1537,6 +1537,9 @@ int mt76_connac_mcu_hw_scan(struct mt76_phy *phy, struct ieee80211_vif *vif,
 	struct mt76_connac_hw_scan_req *req;
 	struct sk_buff *skb;
 
+	if (test_bit(MT76_HW_SCANNING, &phy->state))
+		return -EBUSY;
+
 	skb = mt76_mcu_msg_alloc(mdev, NULL, sizeof(*req));
 	if (!skb)
 		return -ENOMEM;
-- 
2.25.1