mt76: mt7921: abort uncompleted scan by wifi reset

commit e513ae4 upstream.

Scan abort should be required for the uncompleted hardware scan
interrupted by wifi reset. Otherwise, it is possible that the scan
request after wifi reset gets error code -EBUSY from mac80211 and
then blocks the reconnectting to the access point.

Fixes: 0c1ce98 ("mt76: mt7921: add wifi reset support")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Cc: Deren Wu <Deren.Wu@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/net/wireless/mediatek/mt76/mt7921/mac.c

@@ -1386,6 +1386,14 @@ void mt7921_mac_reset_work(struct work_struct *work)
 	if (i == 10)
 		dev_err(dev->mt76.dev, "chip reset failed\n");
 
+	if (test_and_clear_bit(MT76_HW_SCANNING, &dev->mphy.state)) {
+		struct cfg80211_scan_info info = {
+			.aborted = true,
+		};
+
+		ieee80211_scan_completed(dev->mphy.hw, &info);
+	}
+
 	ieee80211_wake_queues(hw);
 	ieee80211_iterate_active_interfaces(hw,
 					    IEEE80211_IFACE_ITER_RESUME_ALL,