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From: Alexander Motin <mav@FreeBSD.org>
Date: Tue, 23 Jun 2009 23:16:38 +0000 (UTC)
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Subject: svn commit: r194790 - in head/sys: amd64/isa i386/isa
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Author: mav
Date: Tue Jun 23 23:16:37 2009
New Revision: 194790
URL: http://svn.freebsd.org/changeset/base/194790

Log:
  Make algorithm a bit more bulletproof.

Modified:
  head/sys/amd64/isa/clock.c
  head/sys/i386/isa/clock.c

Modified: head/sys/amd64/isa/clock.c
==============================================================================
--- head/sys/amd64/isa/clock.c	Tue Jun 23 23:16:00 2009	(r194789)
+++ head/sys/amd64/isa/clock.c	Tue Jun 23 23:16:37 2009	(r194790)
@@ -169,7 +169,7 @@ clkintr(struct trapframe *frame)
 #endif
 		hardclockintr(frame);
 	} else {
-		if (--pscnt == 0) {
+		if (--pscnt <= 0) {
 			pscnt = psratio;
 #ifdef SMP
 			if (smp_started)
@@ -262,7 +262,7 @@ rtcintr(struct trapframe *frame)
 
 	while (rtcin(RTC_INTR) & RTCIR_PERIOD) {
 		flag = 1;
-		if (--pscnt == 0) {
+		if (--pscnt <= 0) {
 			pscnt = psdiv;
 #ifdef SMP
 			if (smp_started)

Modified: head/sys/i386/isa/clock.c
==============================================================================
--- head/sys/i386/isa/clock.c	Tue Jun 23 23:16:00 2009	(r194789)
+++ head/sys/i386/isa/clock.c	Tue Jun 23 23:16:37 2009	(r194790)
@@ -195,7 +195,7 @@ clkintr(struct trapframe *frame)
 #endif
 		hardclockintr(frame);
 	} else {
-		if (--pscnt == 0) {
+		if (--pscnt <= 0) {
 			pscnt = psratio;
 #ifdef SMP
 			if (smp_started)
@@ -293,7 +293,7 @@ rtcintr(struct trapframe *frame)
 
 	while (rtcin(RTC_INTR) & RTCIR_PERIOD) {
 		flag = 1;
-		if (--pscnt == 0) {
+		if (--pscnt <= 0) {
 			pscnt = psdiv;
 #ifdef SMP
 			if (smp_started)