Thread (17 messages) 17 messages, 5 authors, 2015-07-06

[PATCH v3 1/3] ACPI : introduce macros for using the ACPI specification version

From: guohanjun@huawei.com (Hanjun Guo)
Date: 2015-07-03 05:17:04
Also in: linux-acpi, lkml

Hi Al,

On 2015/7/3 7:48, Al Stone wrote:
Add the __ACPI_FADT_SPEC_VERSION() helper macro to build a proper version
number from a major and minor revision number.  Add also macros that use
the helper to construct the current version from the values in the FADT
(i.e., ACPI_FADT_SPEC_VERSION) and both the 5.1 and 6.0 versions.

These macros are added in order to simplify retrieving and comparing ACPI
specification version numbers, since this is becoming a more frequent need.
In particular, there are some architectures that require at least a certain
version of the spec, and there are differences in some structure sizes that
have changed with recent versions but can only be tracked by spec version
number.

Fixes: aeb823bbacc2 (ACPICA: ACPI 6.0: Add changes for FADT table.)
If I understand correctly, will it be (and for next two patches as well):

0cff8dc0099f (ACPICA: ACPI 6.0: Add changes for MADT table.)?

FADT table update was not introduce any regressions for ARM64
I think.

Thanks
Hanjun
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