On Mon, 2022-05-16 at 14:56 -0700, Jakub Kicinski wrote: > > +#if IS_ENABLED(CONFIG_WIRELESS) > struct wireless_dev *ieee80211_ptr; > +#endif Technically, you should be able to use CONFIG_CFG80211 here, but in practice I'd really hope nobody enables WIRELESS without CFG80211 :) > +++ b/include/net/cfg80211.h > @@ -8004,10 +8004,7 @@ int cfg80211_register_netdevice(struct net_device *dev); > * > * Requires the RTNL and wiphy mutex to be held. > */ > -static inline void cfg80211_unregister_netdevice(struct net_device *dev) > -{ > - cfg80211_unregister_wdev(dev->ieee80211_ptr); > -} > +void cfg80211_unregister_netdevice(struct net_device *dev); Exported functions aren't free either - I think in this case I'd (slightly) prefer the extra ifdef. Anyway, we can do this, but I also like Florian's suggestion about the union, and sent an attempt at a disambiguation patch there. johannes