diff --git a/net/wireless/core.h b/net/wireless/core.h
index fcee83a0c9bb15d163c36daa1bf306654f982e49..02668b02e331cf1e8c18314c8f82a659786d8f02 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -73,10 +73,7 @@ bool wiphy_idx_valid(int wiphy_idx)
 extern struct mutex cfg80211_mutex;
 extern struct list_head cfg80211_drv_list;
 
-static inline void assert_cfg80211_lock(void)
-{
-	WARN_ON(!mutex_is_locked(&cfg80211_mutex));
-}
+#define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex))
 
 /*
  * You can use this to mark a wiphy_idx as not having an associated wiphy.