Dear Stefan Roese,
In message <1285773233-29381-1-git-send-email...@denx.de> you wrote:
> This is needed for board with a very short watchdog timeout, like the
> lwmon5 with a 100ms timeout. Without this patch this board resets in the
> commands with long outputs, like "printenv" or "fdt print".
>
> Note that the image size is not increased with this patch when
> CONFIG_HW_WATCHDOG or CONFIG_WATCHDOG are not defined since the compiler
> optimizes this additional code away.
>
> Signed-off-by: Stefan Roese <s...@denx.de>
> ---
> drivers/serial/ns16550.c | 9 ++++++++-
> 1 files changed, 8 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
> index 7e833fd..25fa521 100644
> --- a/drivers/serial/ns16550.c
> +++ b/drivers/serial/ns16550.c
> @@ -5,6 +5,7 @@
> */
>
> #include <config.h>
> +#include <common.h>
> #include <ns16550.h>
> #include <watchdog.h>
> #include <linux/types.h>
> @@ -68,7 +69,13 @@ void NS16550_reinit (NS16550_t com_port, int baud_divisor)
>
> void NS16550_putc (NS16550_t com_port, char c)
> {
> - while ((serial_in(&com_port->lsr) & UART_LSR_THRE) == 0);
> + while ((serial_in(&com_port->lsr) & UART_LSR_THRE) == 0) {
> + int count = 0;
> +
> + /* reset watchdog from time to time */
> + if ((count++ % (256 << 10)) == 0)
> + WATCHDOG_RESET();
> + }
This code makes no sense to me. You initialize the variable in the
same loop, so it will never bi different from 0 when you test it.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
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purely intentional. - Marshall T. Rose
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