In recent versions of udev, the gpsd script runs in series with the task that
creates the real /dev/ttyUSB0 device node. Unfortuntely, the gpsd script runs
BEFORE the creation of the node, and the node is not created until after you
kill the gpsd script, because the gpsd script waits forever for the node to
appear. 

This is a race condition, and is best fixed by running the actual wait/hotplug
portion in the background.

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>

diff -Nuar --exclude '*~' gpsd-2.33.orig/gpsd.hotplug gpsd-2.33/gpsd.hotplug
--- gpsd-2.33.orig/gpsd.hotplug	2005-06-27 11:53:00.000000000 -0700
+++ gpsd-2.33/gpsd.hotplug	2006-08-13 18:35:03.382383884 -0700
@@ -56,7 +56,7 @@
     return action
 
 def hotplug(action, devpath):
-    #syslog.syslog("ACTION=%s" % action)
+    #syslog.syslog("ACTION=%s DEVPATH=%s" % (action,devpath))
     if not devpath:
         syslog.syslog("No device")
     else:
@@ -88,16 +88,18 @@
             return
 
 if __name__ == '__main__':
-    syslog.openlog('gpsd.hotplug', 0, syslog.LOG_DAEMON)
-    try: 
-        if len(sys.argv) == 1:	# Called as hotplug script
-            hotplug(os.getenv("ACTION"), os.getenv("DEVPATH"))
-        else:			# Called by hand for testing
-            gpsd_control(sys.argv[1], sys.argv[2])
-    except:
-        (exc_type, exc_value, exc_traceback) = sys.exc_info()
-        syslog.syslog("gpsd.hotplug: exception %s yields %s" % (exc_type, exc_value))
-        raise exc_type, exc_value, exc_traceback
-    #syslog.syslog("gpsd.hotplug ends")
-    syslog.closelog()
+    pid = os.fork()
+    if not pid:
+        syslog.openlog('gpsd.hotplug', 0, syslog.LOG_DAEMON)
+        try: 
+            if len(sys.argv) == 1:	# Called as hotplug script
+                hotplug(os.getenv("ACTION"), os.getenv("DEVPATH"))
+            else:			# Called by hand for testing
+                gpsd_control(sys.argv[1], sys.argv[2])
+        except:
+            (exc_type, exc_value, exc_traceback) = sys.exc_info()
+            syslog.syslog("gpsd.hotplug: exception %s yields %s" % (exc_type, exc_value))
+            raise exc_type, exc_value, exc_traceback
+        #syslog.syslog("gpsd.hotplug ends")
+        syslog.closelog()