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: 3429e91a661e ("usb: host: xhci: add platform driver support")
Signed-off-by: Sergey Shtylyov <s.shtylyov@xxxxxx>
---
drivers/usb/host/xhci-plat.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index c1edcc9b13ce..8f8ad82d90cd 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -205,6 +205,8 @@ static int xhci_plat_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
+ if (!irq)
+ return -EINVAL;
/*
* sysdev must point to a device that is known to the system firmware
--
2.26.3
