[U-Boot] [IXP42x PATCH series v4 03/17] trigger hardware watchdog in IXP42x serial driver

[Michael Schwingen <michael@schwingen.org>]

Signed-off-by: Michael Schwingen <michael@schwingen.org>
---
Changes for V2:

Changes for V3:
 - coding style fixes
Changes for V4:
 - add changelog

 drivers/serial/serial_ixp.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/serial/serial_ixp.c b/drivers/serial/serial_ixp.c
index dd26af4..a9acd47 100644
--- a/drivers/serial/serial_ixp.c
+++ b/drivers/serial/serial_ixp.c
@@ -30,6 +30,7 @@
 
 #include <common.h>
 #include <asm/arch/ixp425.h>
+#include <watchdog.h>
 
 /*
  *               14.7456 MHz
@@ -85,7 +86,8 @@ int serial_init (void)
 void serial_putc (const char c)
 {
 	/* wait for room in the tx FIFO on UART */
-	while ((LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_TEMT) == 0);
+	while ((LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_TEMT) == 0)
+		WATCHDOG_RESET();	/* Reset HW Watchdog, if needed */
 
 	THR(CONFIG_SYS_IXP425_CONSOLE) = c;
 
@@ -111,7 +113,8 @@ int serial_tstc (void)
  */
 int serial_getc (void)
 {
-	while (!(LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_DR));
+	while (!(LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_DR))
+		WATCHDOG_RESET();	/* Reset HW Watchdog, if needed */
 
 	return (char) RBR(CONFIG_SYS_IXP425_CONSOLE) & 0xff;
 }
-- 
1.7.2.5