[PATCH] phy: rockchip: inno-usb2: Handle errors from optional IRQ lookup

[phucduc.bui at gmail.com]

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

platform_get_irq_optional() can return errors such as -EPROBE_DEFER,
but the driver currently stores the return value directly in rphy->irq
and continues probing.

Propagate negative errors other than -ENXIO using dev_err_probe(), and
only assign the IRQ to rphy->irq when a valid IRQ number is returned.

Signed-off-by: bui duc phuc <phucduc.bui at gmail.com>
---
 drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index 7d8a533f24ae..6079e776b4bb 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -1390,7 +1390,12 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
 	phy_cfgs = device_get_match_data(dev);
 	rphy->chg_state = USB_CHG_STATE_UNDEFINED;
 	rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN;
-	rphy->irq = platform_get_irq_optional(pdev, 0);
+	ret = platform_get_irq_optional(pdev, 0);
+	if (ret < 0 && ret != -ENXIO)
+		return dev_err_probe(dev, ret, "failed to get IRQ resource\n");
+	if (ret > 0)
+		rphy->irq = ret;
+
 	platform_set_drvdata(pdev, rphy);
 
 	if (!phy_cfgs)
-- 
2.43.0