diff --git a/drivers/net/wireless/b43legacy/b43legacy.h b/drivers/net/wireless/b43legacy/b43legacy.h
index 17abf3cb2b1f94fb9b3c7dfb364a276ffb9245c2..6a63a6e474f7baeae105d42cfeb36690730938a8 100644
--- a/drivers/net/wireless/b43legacy/b43legacy.h
+++ b/drivers/net/wireless/b43legacy/b43legacy.h
@@ -330,15 +330,7 @@ enum {
 # undef assert
 #endif
 #ifdef CONFIG_B43LEGACY_DEBUG
-# define B43legacy_WARN_ON(expr)					\
-	do {								\
-		if (unlikely((expr))) {					\
-			printk(KERN_INFO PFX "Test (%s) failed at:"	\
-					      " %s:%d:%s()\n",		\
-					      #expr, __FILE__,		\
-					      __LINE__, __FUNCTION__);	\
-		}							\
-	} while (0)
+# define B43legacy_WARN_ON(x)	WARN_ON(x)
 # define B43legacy_BUG_ON(expr)						\
 	do {								\
 		if (unlikely((expr))) {					\
@@ -349,7 +341,9 @@ enum {
 	} while (0)
 # define B43legacy_DEBUG	1
 #else
-# define B43legacy_WARN_ON(x)	do { /* nothing */ } while (0)
+/* This will evaluate the argument even if debugging is disabled. */
+static inline bool __b43legacy_warn_on_dummy(bool x) { return x; }
+# define B43_WARN_ON(x)	__b43legacy_warn_on_dummy(unlikely(!!(x)))
 # define B43legacy_BUG_ON(x)	do { /* nothing */ } while (0)
 # define B43legacy_DEBUG	0
 #endif
diff --git a/drivers/net/wireless/b43legacy/main.c b/drivers/net/wireless/b43legacy/main.c
index 62e679a1c05fd58365fab7d09f2bf0c7dbc07c90..82953dd0bae04b114e9e74c96afbf83ed9066ed5 100644
--- a/drivers/net/wireless/b43legacy/main.c
+++ b/drivers/net/wireless/b43legacy/main.c
@@ -1068,10 +1068,8 @@ static const u8 *b43legacy_generate_probe_resp(struct b43legacy_wldev *dev,
 	B43legacy_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt,
 					       u.beacon.variable));
 
-	if (src_size < ie_start) {
-		B43legacy_WARN_ON(1);
+	if (B43legacy_WARN_ON(src_size < ie_start))
 		return NULL;
-	}
 
 	dest_data = kmalloc(src_size, GFP_ATOMIC);
 	if (unlikely(!dest_data))