Revert "ACPI: Pass the same capabilities to the _OSC regardless of the query flag"
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 16 Mar 2022 12:37:44 +0000 (13:37 +0100)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Thu, 17 Mar 2022 13:51:53 +0000 (14:51 +0100)
commit2ca8e6285250c07a2e5a22ecbfd59b5a4ef73484
tree578ce09a496a7a414f38d700eae33ee88c56d133
parent3c36fe9302d153283a0cea9e4e25a9e2143ac232
Revert "ACPI: Pass the same capabilities to the _OSC regardless of the query flag"

Revert commit 159d8c274fd9 ("ACPI: Pass the same capabilities to the
_OSC regardless of the query flag") which caused legitimate usage
scenarios (when the platform firmware does not want the OS to control
certain platform features controlled by the system bus scope _OSC) to
break and was misguided by some misleading language in the _OSC
definition in the ACPI specification (in particular, Section 6.2.11.1.3
"Sequence of _OSC Calls" that contradicts other perts of the _OSC
definition).

Link: https://lore.kernel.org/linux-acpi/CAJZ5v0iStA0JmO0H3z+VgQsVuQONVjKPpw0F5HKfiq=Gb6B5yw@mail.gmail.com
Reported-by: Mario Limonciello <Mario.Limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
drivers/acpi/bus.c