[PATCH 13/16] USB: uss720: add debug endpoint-type check

[Johan Hovold]

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 <jo...@kernel.org>
---
 drivers/usb/misc/uss720.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c
index 07014cad6dbe..5947373700a1 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;
@@ -745,9 +745,11 @@ 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);
-- 
2.12.0

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