[PATCH v2 16/18] wifi: rtl818x: 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/realtek/rtl818x/rtl8187/dev.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c b/drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c
index f7e0f6573180..1d21c468a236 100644
--- a/drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c
+++ b/drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c
@@ -1475,8 +1475,6 @@ static int rtl8187_probe(struct usb_interface *intf,
 	usb_set_intfdata(intf, dev);
 	priv->udev = udev;
 
-	usb_get_dev(udev);
-
 	skb_queue_head_init(&priv->rx_queue);
 
 	BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
@@ -1663,7 +1661,6 @@ static int rtl8187_probe(struct usb_interface *intf,
  err_free_dmabuf:
 	kfree(priv->io_dmabuf);
 	usb_set_intfdata(intf, NULL);
-	usb_put_dev(udev);
  err_free_dev:
 	ieee80211_free_hw(dev);
 	return err;
@@ -1685,7 +1682,6 @@ static void rtl8187_disconnect(struct usb_interface *intf)
 
 	priv = dev->priv;
 	usb_reset_device(priv->udev);
-	usb_put_dev(interface_to_usbdev(intf));
 	kfree(priv->io_dmabuf);
 	ieee80211_free_hw(dev);
 }
-- 
2.52.0