| Message ID | 20211026173943.6829-22-s.shtylyov@omp.ru (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Explicitly deny IRQ0 in the USB host drivers | expand |
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
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@omp.ru> --- drivers/usb/host/xhci-plat.c | 2 ++ 1 file changed, 2 insertions(+)