[PATCH 07/13] wifi: mt76x2u: drop redundant device reference

[Johan Hovold]

Driver core holds a reference to the USB interface and its parent USB
device while the interface is bound to a driver and there is no need to
take additional references unless the structures are needed after
disconnect.

Drop the redundant device reference to reduce cargo culting, make it
easier to spot drivers where an extra reference is needed, and reduce
the risk of memory leaks when drivers fail to release it.

Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
 drivers/net/wireless/mediatek/mt76/mt76x2/usb.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/usb.c b/drivers/net/wireless/mediatek/mt76/mt76x2/usb.c
index 01cb3b2830f3..8af360bca643 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2/usb.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2/usb.c
@@ -57,7 +57,6 @@ static int mt76x2u_probe(struct usb_interface *intf,
 
 	dev = container_of(mdev, struct mt76x02_dev, mt76);
 
-	udev = usb_get_dev(udev);
 	usb_reset_device(udev);
 
 	usb_set_intfdata(intf, dev);
@@ -84,14 +83,12 @@ static int mt76x2u_probe(struct usb_interface *intf,
 	mt76u_queues_deinit(&dev->mt76);
 	mt76_free_device(&dev->mt76);
 	usb_set_intfdata(intf, NULL);
-	usb_put_dev(udev);
 
 	return err;
 }
 
 static void mt76x2u_disconnect(struct usb_interface *intf)
 {
-	struct usb_device *udev = interface_to_usbdev(intf);
 	struct mt76x02_dev *dev = usb_get_intfdata(intf);
 	struct ieee80211_hw *hw = mt76_hw(dev);
 
@@ -100,7 +97,6 @@ static void mt76x2u_disconnect(struct usb_interface *intf)
 	mt76x2u_cleanup(dev);
 	mt76_free_device(&dev->mt76);
 	usb_set_intfdata(intf, NULL);
-	usb_put_dev(udev);
 }
 
 static int __maybe_unused mt76x2u_suspend(struct usb_interface *intf,
-- 
2.52.0