USB: aircable: Use usb_endpoint_* functions

Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c
index 8122755..8554c1a7 100644
--- a/drivers/usb/serial/aircable.c
+++ b/drivers/usb/serial/aircable.c
@@ -305,9 +305,7 @@
 
 	for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
 		endpoint = &iface_desc->endpoint[i].desc;
-		if (((endpoint->bEndpointAddress & 0x80) == 0x00) &&
-			((endpoint->bmAttributes & 3) == 0x02)) {
-			/* we found our bulk out endpoint */
+		if (usb_endpoint_is_bulk_out(endpoint)) {
 			dbg("found bulk out on endpoint %d", i);
 			++num_bulk_out;
 		}