Additional comments for reaping transactions

1 files changed, 9 insertions, 2 deletions

diff --git a/usrp/host/lib/fusb_libusb1.cc b/usrp/host/lib/fusb_libusb1.cc
index 6f1fc913f..dc51d5709 100644
--- a/usrp/host/lib/fusb_libusb1.cc
+++ b/usrp/host/lib/fusb_libusb1.cc
@@ -261,7 +261,13 @@ fusb_devhandle_libusb1::_cancel_lut (libusb_transfer *lut)
 
 /*
  * Reimplementing _reap for context use and compatibiliy with libusb-0.12.
- * Returns false on error, true otherwise.
+ *
+ * Returns false on timeout or error, true if an event was handled
+ *
+ * If ok_to_block_p is false then handle already pending events and return
+ * immediately.
+ * If ok_to_block_p is true then call libusb_handle_events_timeout with default
+ * timeout value of 2 seconds, which returns on event arrival or timeout.
  */
 
 bool
@@ -279,8 +285,9 @@ fusb_devhandle_libusb1::_reap (bool ok_to_block_p)
     tv.tv_usec =  0;
   }
  
+
   if ((ret = libusb_handle_events_timeout(d_ctx, &tv)) < 0) {
-    fprintf (stderr, "fusb::_reap libusb_handle_events()\n");
+    fprintf (stderr, "fusb::_reap libusb_handle_events() %i\n", ret);
     return false;
   }