[PATCH v2 11/22] usb: host: ohci-nxp: deny IRQ0

[Sergey Shtylyov]

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: 60bbfc84b6d9 ("USB OHCI controller support for PNX4008")
Signed-off-by: Sergey Shtylyov <s.shtylyov at omp.ru>
Acked-by: Alan Stern <stern at rowland.harvard.edu>
---
Changes in version 2:
- fixed the subject to match the patch;
- added Alan's ACK.

 drivers/usb/host/ohci-nxp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/host/ohci-nxp.c b/drivers/usb/host/ohci-nxp.c
index 85878e8ad331..afb9c2fc85c3 100644
--- a/drivers/usb/host/ohci-nxp.c
+++ b/drivers/usb/host/ohci-nxp.c
@@ -215,6 +215,10 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev)
 		ret = -ENXIO;
 		goto fail_resource;
 	}
+	if (!irq) {
+		ret = -EINVAL;
+		goto fail_resource;
+	}
 
 	ohci_nxp_start_hc();
 	platform_set_drvdata(pdev, hcd);
-- 
2.26.3