xen/time: Return -ENODEV from xen_get_wallclock()

For any other error sync_cmos_clock() will reschedule itself
every second or so, for no good reason.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index 1ecb05db363203ec004f0e3c6764ca5f448fbc78..244791ff8201570d436ff04c351398fe39c7fc8a 100644 (file)
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -74,7 +74,7 @@ static void xen_get_wallclock(struct timespec *now)
 
 static int xen_set_wallclock(const struct timespec *now)
 {
-       return -1;
+       return -ENODEV;
 }
 
 static int xen_pvclock_gtod_notify(struct notifier_block *nb,