Make a polite version of BUG_ON() - WARN_ON() which doesn't

kill the machine.

Damn I hate people who kill the machine for no good reason. 

drivers/base/core.c

@@ -136,7 +136,7 @@ void put_device(struct device * dev)
 	list_del_init(&dev->g_list);
 	up(&device_sem);
 
-	BUG_ON((dev->state != DEVICE_GONE));
+	WARN_ON(dev->state != DEVICE_GONE);
 
 	device_del(dev);
 }

include/linux/kernel.h

@@ -200,6 +200,12 @@ struct sysinfo {
 };
 
 #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
+#define WARN_ON(condition) do { \
+	if (unlikely((condition)!=0)) { \
+		printk("Badness in %s at %s:%d\n", __FUNCTION__, __FILE__, __LINE__); \
+		dump_stack(); \
+	} \
+} while (0)
 
 extern void BUILD_BUG(void);
 #define BUILD_BUG_ON(condition) do { if (condition) BUILD_BUG(); } while(0)