USB: uss720: add debug endpoint-type check

Use the new endpoint helpers to lookup the interrupt-in endpoint,
and only print the corresponding debugging information in case it is
found.

Note that the descriptors are searched in reverse order to avoid any
regressions.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c
index e45a3a680db8..00ce314d89e7 100644
--- a/drivers/usb/misc/uss720.c
+++ b/drivers/usb/misc/uss720.c
@@ -689,7 +689,7 @@ static int uss720_probe(struct usb_interface *intf,
 {
         struct usb_device *usbdev = usb_get_dev(interface_to_usbdev(intf));
         struct usb_host_interface *interface;
-        struct usb_host_endpoint *endpoint;
+        struct usb_endpoint_descriptor *epd;
         struct parport_uss720_private *priv;
         struct parport *pp;
         unsigned char reg;
@@ -740,9 +740,11 @@ static int uss720_probe(struct usb_interface *intf,
         get_1284_register(pp, 0, &reg, GFP_KERNEL);
         dev_dbg(&intf->dev, "reg: %7ph\n", priv->reg);
 
-        endpoint = &interface->endpoint[2];
-        dev_dbg(&intf->dev, "epaddr %d interval %d\n",
-                endpoint->desc.bEndpointAddress, endpoint->desc.bInterval);
+        i = usb_find_last_int_in_endpoint(interface, &epd);
+        if (!i) {
+                dev_dbg(&intf->dev, "epaddr %d interval %d\n",
+                                epd->bEndpointAddress, epd->bInterval);
+        }
         parport_announce_port(pp);
 
         usb_set_intfdata(intf, pp);