[haiku-commits] r35756 - haiku/trunk/src/add-ons/kernel/drivers/power/enhanced_speedstep
- From: superstippi@xxxxxx
- To: haiku-commits@xxxxxxxxxxxxx
- Date: Thu, 4 Mar 2010 10:51:50 +0100 (CET)
Author: stippi
Date: 2010-03-04 10:51:50 +0100 (Thu, 04 Mar 2010)
New Revision: 35756
Changeset: http://dev.haiku-os.org/changeset/35756/haiku
Modified:
haiku/trunk/src/add-ons/kernel/drivers/power/enhanced_speedstep/frequency.cpp
Log:
Check for division by zero.
Modified:
haiku/trunk/src/add-ons/kernel/drivers/power/enhanced_speedstep/frequency.cpp
===================================================================
---
haiku/trunk/src/add-ons/kernel/drivers/power/enhanced_speedstep/frequency.cpp
2010-03-04 09:49:53 UTC (rev 35755)
+++
haiku/trunk/src/add-ons/kernel/drivers/power/enhanced_speedstep/frequency.cpp
2010-03-04 09:51:50 UTC (rev 35756)
@@ -144,13 +144,16 @@
int32 freq = info.cpu_clock_speed / 1000000;
uint16 id = msr >> 32;
- int32 bus = freq / (id >> 8);
+ int32 bus = 0;
+ if (id >> 8)
+ freq / (id >> 8);
TRACE("est: Guessed bus clock (high) of %d MHz\n", int(bus));
if (!bus_speed_ok(bus)) {
// We may be running on the low frequency.
id = msr >> 48;
- bus = freq / (id >> 8);
+ if (id >> 8)
+ bus = freq / (id >> 8);
TRACE("est: Guessed bus clock (low) of %d MHz\n", int(bus));
if (!bus_speed_ok(bus))
return B_ERROR;
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