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authorZhao Yakui <yakui.zhao@intel.com>2007-11-20 14:20:21 -0500
committerLen Brown <len.brown@intel.com>2007-11-20 14:20:21 -0500
commited9cbcd40004904dbe61ccc16d6106a7de38c998 (patch)
treea44deee730838b9e9c222119eea83312fbdd9309 /arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
parent2ffbb8377c7a0713baf6644e285adc27a5654582 (diff)
Revert "speedstep-lib.c: fix frequency multiplier for Pentium4 models 0&1"
For P4 model < 2, The MSR_FBC_REGISTER_ID ratio is undefined. Revert the commit that was added to handle that case, as it results in random MHz displayed. Something else will have to be done to properly handle model < 2. //commit 3e4159ab35c88aef5e063ba78796b277b762a30a //Author: matthias.christian <matthias.christian> //Date: Sat Feb 5 23:09:38 2005 +0000 // // [PATCH] speedstep-lib.c: fix frequency multiplier for Pentium4 models 0&1 // // The Pentium4 models 0&1 have a longer MSR_EBC_FREQUENCY_ID register as the // models 2&3, so the bit shift must be bigger. // // Signed-off-by: Matthias-Christian Ott <matthias.christian@tiscali.de> // Signed-off-by: Dominik Brodowski <linux@brodo.de> // Signed-off-by: Andrew Morton <akpm@osdl.org> // Signed-off-by: Linus Torvalds <torvalds@osdl.org> // // BKrev: 42055232eWM-NgjhZVir44mp5GXktQ http://bugzilla.kernel.org/show_bug.cgi?id=7186 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/x86/kernel/cpu/cpufreq/speedstep-lib.c')
-rw-r--r--arch/x86/kernel/cpu/cpufreq/speedstep-lib.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
index 76c3ab0da468..98d4fdb7dc04 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
@@ -189,10 +189,7 @@ static unsigned int pentium4_get_frequency(void)
189 printk(KERN_DEBUG "speedstep-lib: couldn't detect FSB speed. Please send an e-mail to <linux@brodo.de>\n"); 189 printk(KERN_DEBUG "speedstep-lib: couldn't detect FSB speed. Please send an e-mail to <linux@brodo.de>\n");
190 190
191 /* Multiplier. */ 191 /* Multiplier. */
192 if (c->x86_model < 2) 192 mult = msr_lo >> 24;
193 mult = msr_lo >> 27;
194 else
195 mult = msr_lo >> 24;
196 193
197 dprintk("P4 - FSB %u kHz; Multiplier %u; Speed %u kHz\n", fsb, mult, (fsb * mult)); 194 dprintk("P4 - FSB %u kHz; Multiplier %u; Speed %u kHz\n", fsb, mult, (fsb * mult));
198 195