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>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index 2e6071efbfb7..5de415707c23 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -127,7 +127,7 @@ struct usb_hcd {
         unsigned                authorized_default:1;
         unsigned                has_tt:1;       /* Integrated TT in root hub */
 
-        int                     irq;            /* irq allocated */
+        unsigned int            irq;            /* irq allocated */
         void __iomem            *regs;          /* device memory/io */
         u64                     rsrc_start;     /* memory/io resource start */
         u64                     rsrc_len;       /* memory/io resource length */