[PATCH v2] watchdog: stm32_iwdg: fix error message during driver probe

[Guenter Roeck]

On 12/12/24 02:20, Clément Le Goffic wrote:
> The commit 3ab1663af6c1 ("watchdog: stm32_iwdg: Add pretimeout support")
> introduces the support for the pre-timeout interrupt.
> 
> The support for this interrupt is optional but the driver uses the
> platform_get_irq() wich produces an error message during the driver
> probe if we don't have any `interrupts` property in the DT.
> 
> Use the platform_get_irq_optional() API to get rid of the error message
> as this property is optional.
> 
> Fixes: 3ab1663af6c1 ("watchdog: stm32_iwdg: Add pretimeout support")
> Signed-off-by: Clément Le Goffic <clement.legoffic at foss.st.com>

Reviewed-by: Guenter Roeck <linux at roeck-us.net>

> ---
> v1 -> v2: Change the commit message because it only prints an error
> message and dont break the DT backward compatibility.
> 
> drivers/watchdog/stm32_iwdg.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/watchdog/stm32_iwdg.c b/drivers/watchdog/stm32_iwdg.c
> index d700e0d49bb95..8ad06b54c5adc 100644
> --- a/drivers/watchdog/stm32_iwdg.c
> +++ b/drivers/watchdog/stm32_iwdg.c
> @@ -286,7 +286,7 @@ static int stm32_iwdg_irq_init(struct platform_device *pdev,
>   	if (!wdt->data->has_early_wakeup)
>   		return 0;
> 
> -	irq = platform_get_irq(pdev, 0);
> +	irq = platform_get_irq_optional(pdev, 0);
>   	if (irq <= 0)
>   		return 0;
> 
> 
> base-commit: fac04efc5c793dccbd07e2d59af9f90b7fc0dca4
> --
> 2.34.1
> 
>