[PATCH 1/5] pinctrl: ocelot: Propagate errors from optional IRQ lookup

[phucduc.bui at gmail.com]

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

platform_get_irq_optional() returns a positive IRQ number on success or
a negative error code on failure. For an optional IRQ, -ENXIO indicates
that no optional IRQ is available, while other errors should be propagated.

Propagate all error codes returned by platform_get_irq_optional() other
than -ENXIO.

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

diff --git a/drivers/pinctrl/pinctrl-ocelot.c b/drivers/pinctrl/pinctrl-ocelot.c
index 0fe0527863b8..02824da6bcdf 100644
--- a/drivers/pinctrl/pinctrl-ocelot.c
+++ b/drivers/pinctrl/pinctrl-ocelot.c
@@ -2369,6 +2369,8 @@ static int ocelot_gpiochip_register(struct platform_device *pdev,
 	gc->label = "ocelot-gpio";
 
 	irq = platform_get_irq_optional(pdev, 0);
+	if (irq < 0 && irq != -ENXIO)
+		return irq;
 	if (irq > 0) {
 		girq = &gc->irq;
 		gpio_irq_chip_set_chip(girq, &ocelot_irqchip);
-- 
2.43.0