[PATCH v2 01/10] usb: gadget: udc: bcm63xx: fix deferred probing

[Sergey Shtylyov]

The driver overrides the error codes returned by platform_get_irq() to
-ENXIO for some strange reason, so if it returns -EPROBE_DEFER, the driver
will fail the probe permanently instead of the deferred probing. Switch to
propagating the error codes upstream.

Fixes: 613065e53cb1 ("usb: gadget: bcm63xx UDC driver")
Signed-off-by: Sergey Shtylyov <s.shtylyov at omp.ru>
---
 drivers/usb/gadget/udc/bcm63xx_udc.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/udc/bcm63xx_udc.c b/drivers/usb/gadget/udc/bcm63xx_udc.c
index a9f07c59fc37..2cdb07905bde 100644
--- a/drivers/usb/gadget/udc/bcm63xx_udc.c
+++ b/drivers/usb/gadget/udc/bcm63xx_udc.c
@@ -2321,8 +2321,10 @@ static int bcm63xx_udc_probe(struct platform_device *pdev)
 
 	/* IRQ resource #0: control interrupt (VBUS, speed, etc.) */
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
+	if (irq < 0) {
+		rc = irq;
 		goto out_uninit;
+	}
 	if (devm_request_irq(dev, irq, &bcm63xx_udc_ctrl_isr, 0,
 			     dev_name(dev), udc) < 0)
 		goto report_request_failure;
@@ -2330,8 +2332,10 @@ static int bcm63xx_udc_probe(struct platform_device *pdev)
 	/* IRQ resources #1-6: data interrupts for IUDMA channels 0-5 */
 	for (i = 0; i < BCM63XX_NUM_IUDMA; i++) {
 		irq = platform_get_irq(pdev, i + 1);
-		if (irq < 0)
+		if (irq < 0) {
+			rc = irq;
 			goto out_uninit;
+		}
 		if (devm_request_irq(dev, irq, &bcm63xx_udc_data_isr, 0,
 				     dev_name(dev), &udc->iudma[i]) < 0)
 			goto report_request_failure;
-- 
2.26.3