From: Ladislav Michl ladis@linux-mips.org
ns16550 busyloops waiting for incoming byte causing watchdog to reboot while waiting for a key press. A call to WATCHDOG_RESET in NS16550_getc loop fixes it.
Signed-off-by: Ladislav Michl ladis@linux-mips.org ---
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c index 2fcc8c3..b3bf10b 100644 --- a/drivers/serial/ns16550.c +++ b/drivers/serial/ns16550.c @@ -6,6 +6,7 @@
#include <config.h> #include <ns16550.h> +#include <watchdog.h>
#define UART_LCRVAL UART_LCR_8N1 /* 8 data, 1 stop, no parity */ #define UART_MCRVAL (UART_MCR_DTR | \ @@ -70,6 +71,7 @@ char NS16550_getc (NS16550_t com_port) extern void usbtty_poll(void); usbtty_poll(); #endif + WATCHDOG_RESET(); } return (com_port->rbr); }