Re: [syzbot] [wireless?] INFO: task hung in ath9k_hif_usb_firmware_cb (3)

[Toke Høiland-Jørgensen <toke@xxxxxxx>]

#syz test

diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
index fe9abe8cd268..8d18043ebdbe 100644
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -1152,18 +1152,7 @@ static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
  */
 static void ath9k_hif_usb_firmware_fail(struct hif_device_usb *hif_dev)
 {
-	struct device *dev = &hif_dev->udev->dev;
-	struct device *parent = dev->parent;
-
 	complete_all(&hif_dev->fw_done);
-
-	if (parent)
-		device_lock(parent);
-
-	device_release_driver(dev);
-
-	if (parent)
-		device_unlock(parent);
 }
 
 static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context);