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Before faking up a state table, make sure that neither frequency nor 

voltage difference is 0. This avoids a divide by zero.
This commit is contained in:
joerg 2007-10-24 06:21:32 +00:00
parent 03ececeaba
commit 25f1319b9a
1 changed files with 7 additions and 2 deletions
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9
sys/arch/x86/x86/est.c
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@ -1,4 +1,4 @@
/* $NetBSD: est.c,v 1.3 2007/08/06 03:38:49 simonb Exp $ */
/* $NetBSD: est.c,v 1.4 2007/10/24 06:21:32 joerg Exp $ */
/*
* Copyright (c) 2003 Michael Eriksson.
* All rights reserved.
@ -86,7 +86,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: est.c,v 1.3 2007/08/06 03:38:49 simonb Exp $");
__KERNEL_RCSID(0, "$NetBSD: est.c,v 1.4 2007/10/24 06:21:32 joerg Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -1199,6 +1199,11 @@ est_init_main(int vendor)
maxvolt = MSR2VOLTINC(idhi);
freqinc = maxfreq - minfreq;
voltinc = maxvolt - minvolt;
/* Avoid diving by zero. */
if (freqinc == 0 || voltinc == 0)
return;
if (freqinc < voltinc) {
tablesize = maxfreq - minfreq + 1;
voltinc = voltinc * 100 / freqinc - 1;