[src/cherry-xenmp]: src/sys/arch/xen/xen Do not register the same callback mo...

[cherry <cherry%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9df07ebe5e48
branches:  cherry-xenmp
changeset: 765619:9df07ebe5e48
user:      cherry <cherry%NetBSD.org@localhost>
date:      Mon Jul 25 17:29:43 2011 +0000

description:
Do not register the same callback more than once.

diffstat:

 sys/arch/xen/xen/clock.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (29 lines):

diff -r b055635a6bc5 -r 9df07ebe5e48 sys/arch/xen/xen/clock.c
--- a/sys/arch/xen/xen/clock.c  Sat Jul 23 09:21:52 2011 +0000
+++ b/sys/arch/xen/xen/clock.c  Mon Jul 25 17:29:43 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: clock.c,v 1.54.6.1 2011/06/03 13:27:42 cherry Exp $    */
+/*     $NetBSD: clock.c,v 1.54.6.2 2011/07/25 17:29:43 cherry Exp $    */
 
 /*
  *
@@ -29,7 +29,7 @@
 #include "opt_xen.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: clock.c,v 1.54.6.1 2011/06/03 13:27:42 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: clock.c,v 1.54.6.2 2011/07/25 17:29:43 cherry Exp $");
 
 #include <sys/param.h>
 #include <sys/cpu.h>
@@ -452,7 +452,9 @@
                             "hardclock");
 
 #ifdef DOM0OPS
-       callout_init(&xen_timepush_co, 0);
+       if (!tcdone) { /* Do this only once */
+               callout_init(&xen_timepush_co, 0);
+       }
 #endif
        evtch = bind_virq_to_evtch(VIRQ_TIMER);
        aprint_verbose("Xen clock: using event channel %d\n", evtch);