at91sam9: add watchdog support

[u-boot] / drivers / serial / atmel_usart.c

diff --git a/drivers/serial/atmel_usart.c b/drivers/serial/atmel_usart.c
index f3b146c22d783ae2eb8b2bab77499c38dfc16850..f50552a2c70c7fade9799a132940371b8e449aa7 100644 (file)
--- a/drivers/serial/atmel_usart.c
+++ b/drivers/serial/atmel_usart.c
@@ -16,6 +16,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 #include <common.h>
+#include <watchdog.h>
 
 #include <asm/io.h>
 #include <asm/arch/clk.h>
@@ -87,7 +88,8 @@ void serial_puts(const char *s)
 
 int serial_getc(void)
 {
-       while (!(usart3_readl(CSR) & USART3_BIT(RXRDY))) ;
+       while (!(usart3_readl(CSR) & USART3_BIT(RXRDY)))
+                WATCHDOG_RESET();
        return usart3_readl(RHR);
 }