diff --git a/include/linux/device.h b/include/linux/device.h
index 8511d14..a0cd2ce 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -571,7 +571,11 @@
 #define dev_dbg(dev, format, arg...)		\
 	dev_printk(KERN_DEBUG , dev , format , ## arg)
 #else
-#define dev_dbg(dev, format, arg...) do { (void)(dev); } while (0)
+static inline int __attribute__ ((format (printf, 2, 3)))
+dev_dbg(struct device * dev, const char * fmt, ...)
+{
+	return 0;
+}
 #endif
 
 #define dev_err(dev, format, arg...)		\