X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fusb%2Fcore%2Furb.c;h=c0b1ae25ae2a8923cf463bd670f3873acaf87102;hb=849c529f57020cc47085400edd5e641d95cd4faf;hp=9d7e63292c01175647503b65e821cdd3b94dc381;hpb=256ae6a720618cbbfacc5e62ea1fe7c129d1b644;p=linux-2.6

diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 9d7e63292c..c0b1ae25ae 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -334,7 +334,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
 		dev_dbg(&dev->dev,
 			"bogus endpoint ep%d%s in %s (bad maxpacket %d)\n",
 			usb_endpoint_num(&ep->desc), is_out ? "out" : "in",
-			__FUNCTION__, max);
+			__func__, max);
 		return -EMSGSIZE;
 	}
 
@@ -589,6 +589,30 @@ void usb_kill_anchored_urbs(struct usb_anchor *anchor)
 }
 EXPORT_SYMBOL_GPL(usb_kill_anchored_urbs);
 
+/**
+ * usb_unlink_anchored_urbs - asynchronously cancel transfer requests en masse
+ * @anchor: anchor the requests are bound to
+ *
+ * this allows all outstanding URBs to be unlinked starting
+ * from the back of the queue. This function is asynchronous.
+ * The unlinking is just tiggered. It may happen after this
+ * function has returned.
+ */
+void usb_unlink_anchored_urbs(struct usb_anchor *anchor)
+{
+	struct urb *victim;
+
+	spin_lock_irq(&anchor->lock);
+	while (!list_empty(&anchor->urb_list)) {
+		victim = list_entry(anchor->urb_list.prev, struct urb,
+				    anchor_list);
+		/* this will unanchor the URB */
+		usb_unlink_urb(victim);
+	}
+	spin_unlock_irq(&anchor->lock);
+}
+EXPORT_SYMBOL_GPL(usb_unlink_anchored_urbs);
+
 /**
  * usb_wait_anchor_empty_timeout - wait for an anchor to be unused
  * @anchor: the anchor you want to become unused