[Linux-stm32] [PATCH] rtc: stm32: manage the get_irq probe defer case

[Amelie DELAUNAY]

On 4/24/19 2:26 PM, Fabien Dessenne wrote:
> Manage the -EPROBE_DEFER error case for the wake IRQ.
> 
> Signed-off-by: Fabien Dessenne <fabien.dessenne at st.com>

Acked-by: Amelie Delaunay <amelie.delaunay at st.com>

> ---
>   drivers/rtc/rtc-stm32.c | 9 ++++++---
>   1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/rtc/rtc-stm32.c b/drivers/rtc/rtc-stm32.c
> index c5908cf..8e6c9b3 100644
> --- a/drivers/rtc/rtc-stm32.c
> +++ b/drivers/rtc/rtc-stm32.c
> @@ -788,11 +788,14 @@ static int stm32_rtc_probe(struct platform_device *pdev)
>   	ret = device_init_wakeup(&pdev->dev, true);
>   	if (rtc->data->has_wakeirq) {
>   		rtc->wakeirq_alarm = platform_get_irq(pdev, 1);
> -		if (rtc->wakeirq_alarm <= 0)
> -			ret = rtc->wakeirq_alarm;
> -		else
> +		if (rtc->wakeirq_alarm > 0) {
>   			ret = dev_pm_set_dedicated_wake_irq(&pdev->dev,
>   							    rtc->wakeirq_alarm);
> +		} else {
> +			ret = rtc->wakeirq_alarm;
> +			if (rtc->wakeirq_alarm == -EPROBE_DEFER)
> +				goto err;
> +		}
>   	}
>   	if (ret)
>   		dev_warn(&pdev->dev, "alarm can't wake up the system: %d", ret);
>