cdc-acm: remove is_int_ep from acm structure

is_int_ep is used only in acm_probe, no need to store it in device data.
Signed-off-by: NLadislav Michl <ladis@linux-mips.org>
Acked-by: NOliver Neukum <oneukum@suse.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/class/cdc-acm.c

@@ -1337,8 +1337,7 @@ static int acm_probe(struct usb_interface *intf,
 	spin_lock_init(&acm->write_lock);
 	spin_lock_init(&acm->read_lock);
 	mutex_init(&acm->mutex);
-	acm->is_int_ep = usb_endpoint_xfer_int(epread);
-	if (acm->is_int_ep) {
+	if (usb_endpoint_xfer_int(epread)) {
 		acm->bInterval = epread->bInterval;
 		acm->in = usb_rcvintpipe(usb_dev, epread->bEndpointAddress);
 	} else {
@@ -1382,7 +1381,7 @@ static int acm_probe(struct usb_interface *intf,
 
 		urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 		urb->transfer_dma = rb->dma;
-		if (acm->is_int_ep)
+		if (usb_endpoint_xfer_int(epread))
 			usb_fill_int_urb(urb, acm->dev, acm->in, rb->base,
 					 acm->readsize,
 					 acm_read_bulk_callback, rb,

drivers/usb/class/cdc-acm.h

@@ -117,7 +117,6 @@ struct acm {
 	unsigned int ctrl_caps;				/* control capabilities from the class specific header */
 	unsigned int susp_count;			/* number of suspended interfaces */
 	unsigned int combined_interfaces:1;		/* control and data collapsed */
-	unsigned int is_int_ep:1;			/* interrupt endpoints contrary to spec used */
 	unsigned int throttled:1;			/* actually throttled */
 	unsigned int throttle_req:1;			/* throttle requested */
 	u8 bInterval;