[PATCH 1/2] watchdog: orion_wdt: Propagate -EPROBE_DEFER from IRQ lookup

[phucduc.bui at gmail.com]

From: bui duc phuc <phucduc.bui at gmail.com>

Return -EPROBE_DEFER from platform_get_irq_optional() so the driver is
re-probed when the interrupt resource becomes available instead of
continuing probe without an IRQ.

Signed-off-by: bui duc phuc <phucduc.bui at gmail.com>
---
 drivers/watchdog/orion_wdt.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c
index 0e145f762f6f..8595073a8179 100644
--- a/drivers/watchdog/orion_wdt.c
+++ b/drivers/watchdog/orion_wdt.c
@@ -606,6 +606,8 @@ static int orion_wdt_probe(struct platform_device *pdev)
 
 	/* Request the IRQ only after the watchdog is disabled */
 	irq = platform_get_irq_optional(pdev, 0);
+	if (irq == -EPROBE_DEFER)
+		return irq;
 	if (irq > 0) {
 		/*
 		 * Not all supported platforms specify an interrupt for the
-- 
2.43.0