The driver neglects to check the  result of platform_get_irq()'s call and
blithely passes the negative error codes to usb_add_hcd() (which takes
*unsigned* IRQ #), causing request_irq() that it calls to fail with
-EINVAL, overriding an original error code. Stop calling usb_add_hcd()
with the invalid IRQ #s.

Fixes: 78c73414f4f6 ("USB: ohci: add support for tmio-ohci cell")
Signed-off-by: Sergey Shtylyov <redacted>

---
 drivers/usb/host/ohci-tmio.c |    2 ++
 1 file changed, 2 insertions(+)

Index: usb/drivers/usb/host/ohci-tmio.c
===================================================================

--- usb.orig/drivers/usb/host/ohci-tmio.c
+++ usb/drivers/usb/host/ohci-tmio.c

@@ -242,6 +242,8 @@ static int ohci_hcd_tmio_drv_probe(struc
 	if (ret < 0)
 		goto err_enable;
 
+	if (irq < 0)
+		goto err_enable;
 	ret = usb_add_hcd(hcd, irq, 0);
 	if (ret)
 		goto err_add_hcd;