Re: [PATCH v2 2/5] watchdog: hpwdt: Claim NMI from iLO

[Guenter Roeck <linux@xxxxxxxxxxxx>]

On 08/08/2018 12:13 PM, Jerry Hoemann wrote:
> The hwpdt driver is overloaded for handling both the iLO
> watchdog and the explicit "Generate NMI to System" virutal
> button.  Hence NMI handler needs to claim NMI resulting
> from the virutal button.
>
> Claim if iLO generated accommodating firmware that might
> set wrong bit.
>
> Signed-off-by: Jerry Hoemann <jerry.hoemann@xxxxxxx>

Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>

> ---
>   drivers/watchdog/hpwdt.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
> index fae9364..bb41714 100644
> --- a/drivers/watchdog/hpwdt.c
> +++ b/drivers/watchdog/hpwdt.c
> @@ -162,7 +162,7 @@ static int hpwdt_pretimeout(unsigned int ulReason, struct pt_regs *regs)
>   	if (ilo5 && ulReason == NMI_UNKNOWN && !mynmi)
>   		return NMI_DONE;
>   
> -	if (ilo5 && !pretimeout)
> +	if (ilo5 && !pretimeout && !mynmi)
>   		return NMI_DONE;
>   
>   	hpwdt_stop();