[U-Boot] [PATCH] serial: atmel_usart: insert watchdog petting during putc() and tstc()

[Nicolas Ferre]

Watchdog resets were experienced during autoboot delay. Petting the watchdog
during putc() and tstc() functions solve the issue.

Signed-off-by: Nicolas Ferre <nicolas.ferre at atmel.com>
---
 drivers/serial/atmel_usart.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/serial/atmel_usart.c b/drivers/serial/atmel_usart.c
index cad3412..fcaee5d 100644
--- a/drivers/serial/atmel_usart.c
+++ b/drivers/serial/atmel_usart.c
@@ -80,7 +80,8 @@ void serial_putc(char c)
 	if (c == '\n')
 		serial_putc('\r');
 
-	while (!(usart3_readl(CSR) & USART3_BIT(TXRDY))) ;
+	while (!(usart3_readl(CSR) & USART3_BIT(TXRDY)))
+		 WATCHDOG_RESET();
 	usart3_writel(THR, c);
 }
 
@@ -99,5 +100,6 @@ int serial_getc(void)
 
 int serial_tstc(void)
 {
+	WATCHDOG_RESET();
 	return (usart3_readl(CSR) & USART3_BIT(RXRDY)) != 0;
 }
-- 
1.5.6.5