On Thu, May 01, 2014 at 08:41:29AM -0700, Guenter Roeck wrote:
> Some hardware implements reboot through its watchdog hardware,
> for example by triggering a watchdog timeout. Platform specific
> code starts to spread into watchdog drivers, typically by setting
> pointers to a callback functions which is then called from the
> platform reset handler.
>
> To simplify code and provide a unified API to trigger reboots by
> watchdog drivers, provide a single API to trigger such reboots
> through the watchdog subsystem.
>
> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> drivers/watchdog/watchdog_core.c | 17 +++++++++++++++++
> include/linux/watchdog.h | 11 +++++++++++
> 2 files changed, 28 insertions(+)
>
> diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c
> index cec9b55..4ec6e2f 100644
> --- a/drivers/watchdog/watchdog_core.c
> +++ b/drivers/watchdog/watchdog_core.c
> @@ -43,6 +43,17 @@
> static DEFINE_IDA(watchdog_ida);
> static struct class *watchdog_class;
>
> +static struct watchdog_device *wdd_reboot_dev;
> +
> +void watchdog_do_reboot(enum reboot_mode mode, const char *cmd)
> +{
> + if (wdd_reboot_dev) {
> + if (wdd_reboot_dev->ops->reboot)
you can decrease one level of indentation:
if (wdd_reboot_dev && wdd_reboot_dev->ops->reboot)
also, shouldn't you test if 'ops' is valid too ? In that case:
if (wdd_reboot_dev && wdd_reboot_dev->ops &&
wdd_reboot_dev->ops->reboot)
--
balbi
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