USBD return value for wrong URB submit

diff --git a/drivers/usbd/hcd/hcd_ddekit.c b/drivers/usbd/hcd/hcd_ddekit.c
index ed6dcaeff6c7bfbab1df7cf306f0af8cadcf2ae3..0606c20df01cd3d6c5fed21feaaf04ee0eaecfcc 100755 (executable)
--- a/drivers/usbd/hcd/hcd_ddekit.c
+++ b/drivers/usbd/hcd/hcd_ddekit.c
@@ -185,19 +185,27 @@ ddekit_usb_submit_urb(struct ddekit_usb_urb * d_urb)
        dev = (hcd_device_state *)(d_urb->dev);
        drv = (hcd_driver_state *)(dev->driver);
 
-       /* Remember original URB */
-       dev->urb.original_urb = (void *)d_urb;
+       /* Check for latest URB completion */
+       if (NULL == dev->urb.original_urb) {
 
-       /* TODO: URB's should be queued somewhere if DDEKit is not changed */
-       /* Turn DDEKit URB format to one that is easier to handle by HCD, also
-        * check if URB is valid */
-       hcd_decode_urb(&(dev->urb), d_urb);
+               /* Remember original URB */
+               dev->urb.original_urb = (void *)d_urb;
 
-       /* Start handling URB event */
-       drv->current_event = HCD_EVENT_URB;
-       hcd_handle_event(drv);
+               /* TODO: If multiple URB's have to be queued, this code
+                * or DDEKit's must be altered accordingly */
+               /* Turn DDEKit URB format to one that is easier to
+                * handle by HCD, also check if URB is valid */
+               hcd_decode_urb(&(dev->urb), d_urb);
 
-       return EXIT_SUCCESS;
+               /* Start handling URB event */
+               drv->current_event = HCD_EVENT_URB;
+               hcd_handle_event(drv);
+
+               return EXIT_SUCCESS;
+       }
+
+       /* Last URB must not have been completed */
+       return EXIT_FAILURE;
 }
 
 
@@ -286,6 +294,9 @@ hcd_completion_cb(hcd_urb * urb)
        hcd_encode_urb(urb, d_urb);
 
        completion_cb(d_urb->priv);
+
+       /* URB was handled, forget about it */
+       urb->original_urb = NULL;
 }