1 files changed, 2 insertions, 0 deletions
diff --git a/gpsd.c b/gpsd.c
index 05ea1f13..20ccad76 100644
--- a/gpsd.c
+++ b/gpsd.c
@@ -1667,6 +1667,8 @@ int main(int argc, char *argv[])
 			    /* don't downgrade mode if holding previous fix */
 			    if (sub->fixbuffer.mode > sub->device->gpsdata.fix.mode)
 				changed &=~ MODE_SET;
+			    gpsd_report(LOG_PROG,
+					"transfer mask: %02x\n", changed);
 			    gps_merge_fix(&sub->fixbuffer,
 					  changed,
 					  &sub->device->gpsdata.fix);