af1ae78abb
ACPI hardware reduced mode exists to allow newer platforms to use a simpler form of ACPI that does not require supporting legacy versions of the specification and their associated hardware. This mode was introduced in the ACPI 5.0 specification. The ACPI hardware reduced mode is supposed to be used on systems having the HW_REDUCED_ACPI flag set in the FADT. ACPICA checks that flag to determine whether or not it should work in the HW reduced mode and there are pieces of code in it that will never be used in that case. Since some architecutres will always use the ACPI HW reduced mode, it doesn't make sense for them to ever compile support for anything else. Thus, they should set the flag ACPI_REDUCED_HARDWARE to TRUE in the ACPICA source. To enable them to do that, introduce a new kernel configuration option, CONFIG_ACPI_REDUCED_HARDWARE_ONLY, that will cause the ACPICA's ACPI_REDUCED_HARDWARE flag to be TRUE when set. Introducing this configuration item is based on suggestions from Lv Zheng saying that this does not belong in ACPICA, but rather to the Linux kernel itself. References: http://www.spinics.net/lists/linux-acpi/msg46369.html Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Al Stone <al.stone@linaro.org> [rjw: Subject and changelog] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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| acpi | ||
| asm-generic | ||
| clocksource | ||
| crypto | ||
| drm | ||
| dt-bindings | ||
| keys | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
| memory | ||
| misc | ||
| net | ||
| pcmcia | ||
| ras | ||
| rdma | ||
| rxrpc | ||
| scsi | ||
| sound | ||
| target | ||
| trace | ||
| uapi | ||
| video | ||
| xen | ||
| Kbuild | ||