[PATCH v3 1/2] usb: chipidea: ci_hdrc_imx: Propagate errors from optional IRQ lookup

From: bui duc phuc <[email protected]>

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 IRQ is available, while other errors should be propagated.

Propagate errors such as -EPROBE_DEFER and -EINVAL instead of continuing
probe without the IRQ.

Acked-by: Peter Chen <[email protected]>
Signed-off-by: bui duc phuc <[email protected]>
---

Link v2: 
https://lore.kernel.org/all/[email protected]/
Changes in v3:
 - Use the phy_shutdown label instead of err_clk as suggested by 
   Sashiko's review. 
 - Add Peter Chen's Acked-by tag.

 drivers/usb/chipidea/ci_hdrc_imx.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
index 56d2ba824a0b..9e529398c607 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -525,6 +525,10 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
 		data->supports_runtime_pm = true;
 
 	data->wakeup_irq = platform_get_irq_optional(pdev, 1);
+	if (data->wakeup_irq < 0 && data->wakeup_irq != -ENXIO) {
+		ret = data->wakeup_irq;
+		goto phy_shutdown;
+	}
 	if (data->wakeup_irq > 0) {
 		irq_name = devm_kasprintf(dev, GFP_KERNEL, "%s:wakeup", pdata.name);
 		if (!irq_name) {
-- 
2.43.0