[src/trunk]: src/sys/arch/sh5/sh5 If the RTC time is > 50 days out, don't use...

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

details:   https://anonhg.NetBSD.org/src/rev/93da695b330f
branches:  trunk
changeset: 546129:93da695b330f
user:      scw <scw%NetBSD.org@localhost>
date:      Sun Apr 20 21:26:46 2003 +0000

description:
If the RTC time is > 50 days out, don't use it at all, on the assumption
that there is no battery backup (as is the case on the Cayman).

diffstat:

 sys/arch/sh5/sh5/sh5_clock.c |  6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diffs (27 lines):

diff -r c49614eb1528 -r 93da695b330f sys/arch/sh5/sh5/sh5_clock.c
--- a/sys/arch/sh5/sh5/sh5_clock.c      Sun Apr 20 21:25:59 2003 +0000
+++ b/sys/arch/sh5/sh5/sh5_clock.c      Sun Apr 20 21:26:46 2003 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sh5_clock.c,v 1.3 2002/08/26 10:10:22 scw Exp $        */
+/*     $NetBSD: sh5_clock.c,v 1.4 2003/04/20 21:26:46 scw Exp $        */
 
 /*
  * Copyright 2002 Wasabi Systems, Inc.
@@ -271,6 +271,7 @@
 
         if (todr_gettime(todr_handle, (struct timeval *)&time) != 0 ||
             time.tv_sec == 0) {
+badrtc:
                 printf("WARNING: bad date in battery clock");
                 /*
                  * Believe the time in the file system for lack of
@@ -286,6 +287,9 @@
                         deltat = -deltat;
                 if (waszero || deltat < 2 * SECDAY)
                         return;
+               if (deltat > 50 * SECDAY)
+                       goto badrtc;
+
                 printf("WARNING: clock %s %d days",
                     time.tv_sec < base ? "lost" : "gained", deltat / SECDAY);
         }