Commit 0fea615e authored by Harald Welte's avatar Harald Welte Committed by Linus Torvalds
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CPUFREQ: Mark e_powersaver driver as EXPERIMENTAL and DANGEROUS

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: default avatarHarald Welte <>
Signed-off-by: default avatarLinus Torvalds <>
parent 0de51088
......@@ -220,11 +220,14 @@ config X86_LONGHAUL
If in doubt, say N.
tristate "VIA C7 Enhanced PowerSaver"
tristate "VIA C7 Enhanced PowerSaver (DANGEROUS)"
depends on X86_32
depends on X86_32 && EXPERIMENTAL
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.
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