wifi: libertas_tf: 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>
Link: https://patch.msgid.link/20260306085144.12064-9-johan@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/drivers/net/wireless/marvell/libertas_tf/if_usb.c b/drivers/net/wireless/marvell/libertas_tf/if_usb.c
index f49151c18b793e9b4e864d422f50551f6d133fc5..07b38f2b8f58270163d864b80d2cb530f9ad0b7e 100644 (file)
--- a/drivers/net/wireless/marvell/libertas_tf/if_usb.c
+++ b/drivers/net/wireless/marvell/libertas_tf/if_usb.c
@@ -223,7 +223,6 @@ static int if_usb_probe(struct usb_interface *intf,
        if (!priv)
                goto dealloc;
 
-       usb_get_dev(udev);
        usb_set_intfdata(intf, cardp);
 
        return 0;
@@ -258,7 +257,6 @@ static void if_usb_disconnect(struct usb_interface *intf)
        kfree(cardp);
 
        usb_set_intfdata(intf, NULL);
-       usb_put_dev(interface_to_usbdev(intf));
 
        lbtf_deb_leave(LBTF_DEB_MAIN);
 }