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[src/trunk]: src/sys/dev/i2c don't divide by zero. ever.
details: https://anonhg.NetBSD.org/src/rev/d87a74c1528f
branches: trunk
changeset: 753549:d87a74c1528f
user: macallan <macallan%NetBSD.org@localhost>
date: Thu Apr 01 05:26:48 2010 +0000
description:
don't divide by zero. ever.
diffstat:
sys/dev/i2c/dbcool.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diffs (28 lines):
diff -r b810a304d942 -r d87a74c1528f sys/dev/i2c/dbcool.c
--- a/sys/dev/i2c/dbcool.c Thu Apr 01 05:10:52 2010 +0000
+++ b/sys/dev/i2c/dbcool.c Thu Apr 01 05:26:48 2010 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: dbcool.c,v 1.22 2010/04/01 04:29:35 macallan Exp $ */
+/* $NetBSD: dbcool.c,v 1.23 2010/04/01 05:26:48 macallan Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -49,7 +49,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: dbcool.c,v 1.22 2010/04/01 04:29:35 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: dbcool.c,v 1.23 2010/04/01 05:26:48 macallan Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -922,7 +922,8 @@
if (rpm == 0xffff)
return 0; /* 0xffff indicates stalled/failed fan */
- return (sc->sc_dc.dc_chip->rpm_dividend / rpm);
+ /* don't divide by zero */
+ return (rpm == 0)? 0 : (sc->sc_dc.dc_chip->rpm_dividend / rpm);
}
/* Provide chip's supply voltage, in microvolts */
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