ACPICA: executer/exsystem: Inform users about ACPI spec violation
authorPaul Menzel <pmenzel@molgen.mpg.de>
Mon, 11 Apr 2022 18:59:00 +0000 (20:59 +0200)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 13 Apr 2022 18:24:58 +0000 (20:24 +0200)
commitace8f1c54a02b96036b50defa9d842c10292b6bb
tree2ac2d980a0cec3c659f9121bcf4c1f7a15940bb9
parent1c5d62f5dd979dbe7f4b16a5bd3c64fbecb7d92a
ACPICA: executer/exsystem: Inform users about ACPI spec violation

ACPICA commit 05ba545ce7859392250b18c10081db25c90ed8d7

Values greater than 100 microseconds violate the ACPI specification, so
warn users about it.

From ACPI Specification version 6.2 Errata A, 19.6.128 *Stall (Stall for
a Short Time)*:

> The implementation of Stall is OS-specific, but must not relinquish
> control of the processor. Because of this, delays longer than 100
> microseconds must use Sleep instead of Stall.

Link: https://github.com/acpica/acpica/commit/05ba545c
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reported-by: kernel test robot <lkp@intel.com>
drivers/acpi/acpica/exsystem.c