Hi Wenyou,
> Add the function watchdog_is_open to check whether or not
> the /dev/watchdog? is opened
>
> Signed-off-by: Wenyou Yang <wenyou.yang@xxxxxxxxx>
> Cc: wim@xxxxxxxxx
> Cc: linux-watchdog@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> ---
> include/linux/watchdog.h | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h
> index e40cc2b..7ea4465 100644
> --- a/include/linux/watchdog.h
> +++ b/include/linux/watchdog.h
> @@ -111,6 +111,14 @@ static inline bool watchdog_active(struct watchdog_device *wdd)
> return test_bit(WDOG_ACTIVE, &wdd->status);
> }
>
> +/* Use the following function to check whether or not
> + * the /dev/watchdog? is opened
> + */
> +static inline bool watchdog_is_open(struct watchdog_device *wddev)
> +{
> + return test_bit(WDOG_DEV_OPEN, &wddev->status);
> +}
> +
> /* Use the following function to set the nowayout feature */
> static inline void watchdog_set_nowayout(struct watchdog_device *wdd, bool nowayout)
> {
NAK, this is not good. You should use watchdog_active instead.
Reason: your device could have been opened as for instance /dev/watchdog0.
Kind regards,
Wim.
--
To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
