Title: [7486] trunk/kernel/time/timecompare.c: Fix half-Y2K38 bug in timecompare_update()
- Revision
- 7486
- Author
- bhsong
- Date
- 2009-09-28 04:54:39 -0400 (Mon, 28 Sep 2009)
Log Message
Fix half-Y2K38 bug in timecompare_update()
ktime will overflow from 03:14:07 UTC on Tuesday, 19 January 2038, ktime_add() will overflow a half earlier, from 2009.
This will cause some problems. For example, ptpd will encouter Y2K38 overflow due to that.
Modified Paths
Diff
Modified: trunk/kernel/time/timecompare.c (7485 => 7486)
--- trunk/kernel/time/timecompare.c 2009-09-28 08:51:44 UTC (rev 7485)
+++ trunk/kernel/time/timecompare.c 2009-09-28 08:54:39 UTC (rev 7486)
@@ -89,7 +89,7 @@
* source time
*/
sample.offset =
- ktime_to_ns(ktime_add(end, start)) / 2 -
+ (ktime_to_ns(end) + ktime_to_ns(start)) / 2 -
ts;
/* simple insertion sort based on duration */
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