https://bugzilla.kernel.org/show_bug.cgi?id=199393

--- Comment #7 from Tristian Celestin ([email protected]) ---
After coming across [1], I understand what the return values in the ACPI
snippets mean: they indicate which functions are supported by the _DSM for
PNP0D80. Per the spec, there are 7 functions in total. The 7140 only supports
the first 3, so 0x07 (0b0000111) is returned.

The Linux driver platform/acpi/sleep.c will only support a default sleep state
of s2idle if functions 3 & 4 are supported, or if functions 5 & 6 are
supported. How come the presence of functions 1 & 2 are not considered enough?

[1]
http://www.uefi.org/sites/default/files/resources/Intel_ACPI_Low_Power_S0_Idle.pdf

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