]> git.baikalelectronics.ru Git - kernel.git/commit
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)
commit80e228a4e832f200e1f8206711ce70cc10c57e12
tree578ce09a496a7a414f38d700eae33ee88c56d133
parent700fb2e2ff17275074a54426e7d7c9176531336f
Revert "ACPI: Pass the same capabilities to the _OSC regardless of the query flag"

Revert commit 9227c3a1782b ("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