If platform_get_irq() returns IRQ0 (considered invalid according to Linus)
the driver blithely passes it to usb_add_hcd() that treats IRQ0 as no IRQ
at all. Deny IRQ0 right away, returning -EINVAL from the probe() method...

Fixes: f54aab6ebcec ("usb: ohci-sm501 driver")
Signed-off-by: Sergey Shtylyov <redacted>
---
 drivers/usb/host/ohci-sm501.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c
index b91d50da6127..ffb7b6645d2c 100644
--- a/drivers/usb/host/ohci-sm501.c
+++ b/drivers/usb/host/ohci-sm501.c

@@ -96,6 +96,10 @@ static int ohci_hcd_sm501_drv_probe(struct platform_device *pdev)
 	irq = retval = platform_get_irq(pdev, 0);
 	if (retval < 0)
 		goto err0;
+	if (!retval) {
+		retval = -EINVAL;
+		goto err0;
+	}
 
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	if (mem == NULL) {

-- 
2.26.3