wifi: ath9k: drop redundant device reference

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@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://patch.msgid.link/20260306085144.12064-4-johan@kernel.org
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
index 8533b88974b20941327dd9ef2b188ee4b015b4fa..821909b81ea917559400c6c6a1ce2afefd1265c5 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -1382,8 +1382,6 @@ static int ath9k_hif_usb_probe(struct usb_interface *interface,
                goto err_alloc;
        }
 
-       usb_get_dev(udev);
-
        hif_dev->udev = udev;
        hif_dev->interface = interface;
        hif_dev->usb_device_id = id;
@@ -1403,7 +1401,6 @@ static int ath9k_hif_usb_probe(struct usb_interface *interface,
 err_fw_req:
        usb_set_intfdata(interface, NULL);
        kfree(hif_dev);
-       usb_put_dev(udev);
 err_alloc:
        return ret;
 }
@@ -1451,7 +1448,6 @@ static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
 
        kfree(hif_dev);
        dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
-       usb_put_dev(udev);
 }
 
 #ifdef CONFIG_PM