[U-Boot] [PATCH 62/71] serial: spl: Implement empty functions for SPL

[Marek Vasut]

Implement empty serial_* functions for SPL without serial
support enabled. This is imperative to haave once serial
multi is enabled unconditionally.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Marek Vasut <marek.vasut at gmail.com>
Cc: Tom Rini <trini at ti.com>
---
 common/serial.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/common/serial.c b/common/serial.c
index 631af65..cef4ba8 100644
--- a/common/serial.c
+++ b/common/serial.c
@@ -27,6 +27,16 @@
 #include <post.h>
 #include <linux/compiler.h>
 
+/* Implement prototypes for SPL without serial support */
+#if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_SPL_SERIAL_SUPPORT)
+int serial_init(void) { return 0; }
+void serial_setbrg(void) {}
+int serial_getc(void) { return 0; }
+int serial_tstc(void) { return 0; }
+void serial_putc(const char c) {}
+void serial_puts(const char *s) {}
+#else
+
 DECLARE_GLOBAL_DATA_PTR;
 
 static struct serial_device *serial_devices;
@@ -344,3 +354,5 @@ int uart_post_test(int flags)
 	return ret;
 }
 #endif
+
+#endif
-- 
1.7.10.4