usb: Make pollable int support available outside of ehci-hcd.c

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/usb/host/ehci-hcd.c

@@ -1340,7 +1340,7 @@ void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
 }
 
 /* Do not free buffers associated with QHs, they're owned by someone else */
-static int
+int
 destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
 {
 	struct ehci_ctrl *ctrl = dev->controller;

include/usb.h

@@ -129,6 +129,8 @@ struct usb_device {
 	unsigned int slot_id;
 };
 
+struct int_queue;
+
 /*
  * You can initialize platform's USB host or device
  * ports by passing this enum as an argument to
@@ -163,6 +165,13 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 			int transfer_len, int interval);
 
+#ifdef CONFIG_USB_EHCI /* Only the ehci code has pollable int support */
+struct int_queue *create_int_queue(struct usb_device *dev, unsigned long pipe,
+	int queuesize, int elementsize, void *buffer);
+int destroy_int_queue(struct usb_device *dev, struct int_queue *queue);
+void *poll_int_queue(struct usb_device *dev, struct int_queue *queue);
+#endif
+
 /* Defines */
 #define USB_UHCI_VEND_ID	0x8086
 #define USB_UHCI_DEV_ID		0x7112