usb: core: hcd: make hcd->irq unsigned
There's really no point in having hcd->irq as a
signed integer when we consider the fact that
IRQ 0 means NO_IRQ. In order to avoid confusion,
make hcd->irq unsigned and fix users who were
passing -1 as the IRQ number to usb_add_hcd.
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 3a03324..9e71f7c 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2396,7 +2396,7 @@
/* FIXME when MSI-X is supported and there are multiple vectors */
/* Clear the MSI-X event interrupt status */
- if (hcd->irq != -1) {
+ if (hcd->irq) {
u32 irq_pending;
/* Acknowledge the PCI interrupt */
irq_pending = xhci_readl(xhci, &xhci->ir_set->irq_pending);