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CPUFREQ: Mark e_powersaver driver as EXPERIMENTAL and DANGEROUS

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The e_powersaver driver for VIA's C7 CPU's needs to be marked as
DANGEROUS as it configures the CPU to power states that are out
of specification.

According to Centaur, all systems with C7 and Nano CPU's support
the ACPI p-state method.  Thus, the acpi-cpufreq driver should
be used instead.

Signed-off-by: Harald Welte <HaraldWelte@viatech.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Harald Welte 2009-06-08 18:29:36 +08:00 committed by Linus Torvalds
parent 0de51088e6
commit 0fea615e52
1 changed files with 6 additions and 3 deletions
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9
arch/x86/kernel/cpu/cpufreq/Kconfig
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@ -220,11 +220,14 @@ config X86_LONGHAUL
If in doubt, say N.
config X86_E_POWERSAVER
tristate "VIA C7 Enhanced PowerSaver"
tristate "VIA C7 Enhanced PowerSaver (DANGEROUS)"
select CPU_FREQ_TABLE
depends on X86_32
depends on X86_32 && EXPERIMENTAL
help
This adds the CPUFreq driver for VIA C7 processors.
This adds the CPUFreq driver for VIA C7 processors. However, this driver
does not have any safeguards to prevent operating the CPU out of spec
and is thus considered dangerous. Please use the regular ACPI cpufreq
driver, enabled by CONFIG_X86_ACPI_CPUFREQ.
If in doubt, say N.