diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
index 3f563e02d17d..ad5241c97d7f 100644
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -440,6 +440,7 @@ static void hif_usb_stop(void *hif_handle)
 {
 	struct hif_device_usb *hif_dev = hif_handle;
 	struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
+	struct urb *victim = tx_buf->urb;
 	unsigned long flags;
 
 	spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
@@ -449,10 +450,15 @@ static void hif_usb_stop(void *hif_handle)
 	spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
 
 	/* The pending URBs have to be canceled. */
+	spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
 	list_for_each_entry_safe(tx_buf, tx_buf_tmp,
 				 &hif_dev->tx.tx_pending, list) {
-		usb_kill_urb(tx_buf->urb);
+		usb_get_urb(victim);
+		spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
+		usb_kill_urb(victim);
+		spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
 	}
+	spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
 
 	usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
 }