From 6f29eda7b77a9d44382bbeb99fe8a4c93b11aabb Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 6 Mar 2026 09:51:41 +0100 Subject: [PATCH] wifi: rt2x00: 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. Acked-by: Stanislaw Gruszka Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260306085144.12064-16-johan@kernel.org Signed-off-by: Johannes Berg --- drivers/net/wireless/ralink/rt2x00/rt2x00usb.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c index 54599cad78f9..83d00b6baf64 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c @@ -802,14 +802,12 @@ int rt2x00usb_probe(struct usb_interface *usb_intf, struct rt2x00_dev *rt2x00dev; int retval; - usb_dev = usb_get_dev(usb_dev); usb_reset_device(usb_dev); hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw); if (!hw) { rt2x00_probe_err("Failed to allocate hardware\n"); - retval = -ENOMEM; - goto exit_put_device; + return -ENOMEM; } usb_set_intfdata(usb_intf, hw); @@ -851,10 +849,6 @@ int rt2x00usb_probe(struct usb_interface *usb_intf, exit_free_device: ieee80211_free_hw(hw); - -exit_put_device: - usb_put_dev(usb_dev); - usb_set_intfdata(usb_intf, NULL); return retval; @@ -873,11 +867,7 @@ void rt2x00usb_disconnect(struct usb_interface *usb_intf) rt2x00usb_free_reg(rt2x00dev); ieee80211_free_hw(hw); - /* - * Free the USB device data. - */ usb_set_intfdata(usb_intf, NULL); - usb_put_dev(interface_to_usbdev(usb_intf)); } EXPORT_SYMBOL_GPL(rt2x00usb_disconnect);