1 files changed, 4 insertions, 0 deletions

diff --git a/include/asm-powerpc/serial.h b/include/asm-powerpc/serial.h
index 6dc9546d6908..3e8589b43cb2 100644
--- a/include/asm-powerpc/serial.h
+++ b/include/asm-powerpc/serial.h
@@ -15,6 +15,10 @@
 /* Default baud base if not found in device-tree */
 #define BASE_BAUD ( 1843200 / 16 )
 
+#ifdef CONFIG_PPC_UDBG_16550
 extern void find_legacy_serial_ports(void);
+#else
+#define find_legacy_serial_ports()      do { } while (0)
+#endif
 
 #endif /* _PPC64_SERIAL_H */