Re: [PATCH] watchdog_core: Remove unnecessary ‘0’ values from ret

[Guenter Roeck <linux@xxxxxxxxxxxx>]

On 10/21/23 03:57, fenghui wrote:
> ret is assigned first, so it does not need to initialize the assignment.
>
> Signed-off-by: fenghui <fenghui@xxxxxxxxxxxx>
> ---
>   drivers/watchdog/watchdog_core.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c
> index 5b55ccae06d4..dceaf5cc89fd 100644
> --- a/drivers/watchdog/watchdog_core.c
> +++ b/drivers/watchdog/watchdog_core.c
> @@ -194,7 +194,7 @@ static int watchdog_pm_notifier(struct notifier_block *nb, unsigned long mode,
>   				void *data)
>   {
>   	struct watchdog_device *wdd;
> -	int ret = 0;
> +	int ret;
>   
>   	wdd = container_of(nb, struct watchdog_device, pm_nb);
>   

NACK

Complete code:

static int watchdog_pm_notifier(struct notifier_block *nb, unsigned long mode,
                                void *data)
{
        struct watchdog_device *wdd;
        int ret = 0;

        wdd = container_of(nb, struct watchdog_device, pm_nb);

        switch (mode) {
        case PM_HIBERNATION_PREPARE:
        case PM_RESTORE_PREPARE:
        case PM_SUSPEND_PREPARE:
                ret = watchdog_dev_suspend(wdd);
                break;
        case PM_POST_HIBERNATION:
        case PM_POST_RESTORE:
        case PM_POST_SUSPEND:
                ret = watchdog_dev_resume(wdd);
                break;
        }

        if (ret)
                return NOTIFY_BAD;

        return NOTIFY_DONE;
}

ret is not set in the default: case.

I don't know what this is about; you have submitted two patches
in a row, both of which would introduce a problem if accepted.
Is this a test ? Either case, please refrain from submitting
such patches in the future.

Guenter