[PATCH 5.1 101/405] rtc: stm32: manage the get_irq probe defer case

[Greg Kroah-Hartman]

[ Upstream commit cf612c5949aca2bd81a1e28688957c8149ea2693 ]

Manage the -EPROBE_DEFER error case for the wake IRQ.

Signed-off-by: Fabien Dessenne <fabien.desse...@st.com>
Acked-by: Amelie Delaunay <amelie.delau...@st.com>
Signed-off-by: Alexandre Belloni <alexandre.bell...@bootlin.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 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 c5908cfea2340..8e6c9b3bcc29a 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);
-- 
2.20.1