mt76: mt7921s: fix bus hang with wrong privilege

Accroding to chip hw flow, mt7921s need to re-acquire privilege
again before normal running. Otherwise, the bus may be stuck in
an abnormal status.

Tested-by: Leon Yen <[email protected]>
Co-developed-by: Eric-SY Chang <[email protected]>
Signed-off-by: Eric-SY Chang <[email protected]>
Co-developed-by: YN Chen <[email protected]>
Signed-off-by: YN Chen <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>

Author: deren

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

@@ -720,6 +720,17 @@ static int mt7921_load_patch(struct mt7921_dev *dev)
 	if (ret)
 		dev_err(dev->mt76.dev, "Failed to start patch\n");
 
+	if (mt76_is_sdio(&dev->mt76)) {
+		/* activate again */
+		ret = __mt7921_mcu_fw_pmctrl(dev);
+		if (ret)
+			return ret;
+
+		ret = __mt7921_mcu_drv_pmctrl(dev);
+		if (ret)
+			return ret;
+	}
+
 out:
 	sem = mt76_connac_mcu_patch_sem_ctrl(&dev->mt76, false);
 	switch (sem) {