--- a/drivers/net/wireless/ath/ath9k/hif_usb.c	2022-05-23 20:22:13.116199100 +0800
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c	2022-05-23 20:35:56.214334900 +0800
@@ -669,6 +669,8 @@ static void ath9k_hif_usb_rx_cb(struct u
 
 	if (!hif_dev)
 		goto free;
+	if (!(hif_dev->flags & HIF_USB_READY))
+		goto free;
 
 	switch (urb->status) {
 	case 0: