[U-Boot] [PATCH v2] xyz-modem: Fix timeout loop waiting with WATCHDOG

[Lokesh Vutla]

Commit 2c77c0d6524eb ("xyz-modem: Change getc timeout loop waiting")
fixes the loop delay when using a hw watchdog, assuming that Watchdog
kicking is taken care of by getc(). But watchdog kicking in getc happens
only when a request for retry is occurred. This request might not happen
all the time. So, kick the watchdog before loop waiting, instead of
relying on other functions.

Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
---
This fixes UART boot on AM335x-evm.

Changes since v1:
- Updated commit meesage.

 common/xyzModem.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/common/xyzModem.c b/common/xyzModem.c
index a0c5dfeece..8c4679473f 100644
--- a/common/xyzModem.c
+++ b/common/xyzModem.c
@@ -26,6 +26,7 @@
 #include <xyzModem.h>
 #include <stdarg.h>
 #include <crc.h>
+#include <watchdog.h>
 
 /* Assumption - run xyzModem protocol over the console port */
 
@@ -64,6 +65,7 @@ CYGACC_COMM_IF_GETC_TIMEOUT (char chan, char *c)
 {
 
   ulong now = get_timer(0);
+  WATCHDOG_RESET();
   while (!tstc ())
     {
       if (get_timer(now) > xyzModem_CHAR_TIMEOUT)
-- 
2.14.1