Messages in this thread Patch in this message | | | Date | Sat, 22 Jan 2005 14:48:52 +0100 | From | Matthias-Christian Ott <> | Subject | [PATCH]: speedstep-lib: fix frequency multiplier for Pentium4 models 0&1 |
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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>
--- linux-bk/arch/i386/kernel/cpu/cpufreq/speedstep-lib.c.orig 2005-01-21 13:55:37.000000000 +0100 +++ linux-bk/arch/i386/kernel/cpu/cpufreq/speedstep-lib.c 2005-01-22 10:58:34.000000000 +0100 @@ -160,7 +160,14 @@ printk(KERN_DEBUG "speedstep-lib: couldn't detect FSB speed. Please send an e-mail to <linux@brodo.de>\n"); /* Multiplier. */ - mult = msr_lo >> 24; + if (c->x86_model < 2) + { + mult = msr_lo >> 27; + } + else + { + mult = msr_lo >> 24; + } dprintk("P4 - FSB %u kHz; Multiplier %u; Speed %u kHz\n", fsb, mult, (fsb * mult));
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