diff options
| author | Matthias-Christian Ott | 2009-02-21 02:52:17 +0100 |
|---|---|---|
| committer | Dave Jones | 2009-02-25 04:47:32 +0100 |
| commit | 199785eac892a1fa1b71cc22bec58e8b156d9311 (patch) | |
| tree | 8e200f33cba62afb37a36d297b2a0224c7b8345b /arch/x86/kernel/cpu/cpufreq/p4-clockmod.c | |
| parent | [CPUFREQ] powernow-k8: Use a common exit path. (diff) | |
| download | kernel-qcow2-linux-199785eac892a1fa1b71cc22bec58e8b156d9311.tar.gz kernel-qcow2-linux-199785eac892a1fa1b71cc22bec58e8b156d9311.tar.xz kernel-qcow2-linux-199785eac892a1fa1b71cc22bec58e8b156d9311.zip | |
[CPUFREQ] p4-clockmod reports wrong frequency.
http://bugzilla.kernel.org/show_bug.cgi?id=10968
[ Updated for current tree, and fixed compile failure
when p4-clockmod was built modular -- davej]
From: Matthias-Christian Ott <ott@mirix.org>
Signed-off-by: Dominik Brodowski <linux@brodo.de>
Signed-off-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'arch/x86/kernel/cpu/cpufreq/p4-clockmod.c')
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/p4-clockmod.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c index 46a2a7a53148..1778402305e0 100644 --- a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c +++ b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c @@ -31,6 +31,7 @@ #include <asm/processor.h> #include <asm/msr.h> +#include <asm/timer.h> #include "speedstep-lib.h" @@ -224,6 +225,12 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy) dprintk("has errata -- disabling low frequencies\n"); } + if (speedstep_detect_processor() == SPEEDSTEP_CPU_P4D && + c->x86_model < 2) { + /* switch to maximum frequency and measure result */ + cpufreq_p4_setdc(policy->cpu, DC_DISABLE); + recalibrate_cpu_khz(); + } /* get max frequency */ stock_freq = cpufreq_p4_get_frequency(c); if (!stock_freq) |