[CPUFREQ] speedstep-centrino: skip extract_clock logic for acpi based centrino

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speedstep_centrino.c:extract_clock() assumes the bus speed of 100MHz, which is
not true with latest laptops. Due to this assumption and due to the encoded
frequency check during initialization, speedstep-centrino driver fails even
on systems that has proper ACPI information to do the P-state transition.

The change below moves the centrino-speedstep detection to be used only
when table based P-state transition is done. For ACPI based P-state
transition, we skip the centrino_cpu identification, and as a result we
don't use the bus speed assumption in extract_clock. This change makes
speedstep-centrino work on Pentium-M based systems, which have more than 100MHz
bus speed.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>

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Venkatesh Pallipadi 2005-08-29 13:54:55 -07:00 • committed by Dave Jones

parent 8085e1f1f0

commit f914be79ab

1 changed files with 7 additions and 7 deletions

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arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c

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