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23 October 2021, 00:29:24 UTC
Revision d90aa92c0c1625d7f02050e4d2924805840cda3d authored by Lin Ming on 09 December 2010, 08:50:52 UTC, committed by Len Brown on 11 December 2010, 06:28:58 UTC 
acpi: fix _OSI string setup regression
 
commit b0ed7a91(ACPICA/ACPI: Add new host interfaces for _OSI suppor)
introduced a regression that _OSI string setup fails.

There are 2 paths to setup _OSI string.

DMI:
acpi_dmi_osi_linux -> set_osi_linux -> acpi_osi_setup -> copy _OSI
string to osi_setup_string

Boot command line:
acpi_osi_setup -> copy _OSI string to osi_setup_string

Later, acpi_osi_setup_late will be called to handle osi_setup_string.
If _OSI string is "Linux" or "!Linux", then the call path is,

acpi_osi_setup_late -> acpi_cmdline_osi_linux -> set_osi_linux ->
acpi_osi_setup -> copy _OSI string to osi_setup_string

This actually never installs _OSI string(acpi_install_interface not
called), but just copy the _OSI string to osi_setup_string.

This patch fixes the regression.

Reported-and-tested-by: Lukas Hejtmanek <xhejtman@ics.muni.cz>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
1 parent cf7d7e5
History
Tip revision: d90aa92c0c1625d7f02050e4d2924805840cda3d authored by Lin Ming on 09 December 2010, 08:50:52 UTC
acpi: fix _OSI string setup regression
Tip revision: d90aa92
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