--- zzzz-none-000/linux-2.6.19.2/drivers/acpi/glue.c	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5504/linux-2.6.19.2/drivers/acpi/glue.c	2007-01-19 14:42:56.000000000 +0000
@@ -16,7 +16,7 @@
 #if ACPI_GLUE_DEBUG
 #define DBG(x...) printk(PREFIX x)
 #else
-#define DBG(x...)
+#define DBG(x...) do {} while (0)
 #endif
 static LIST_HEAD(bus_type_list);
 static DECLARE_RWSEM(bus_type_sem);