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| author | Mario Limonciello <mario.limonciello@amd.com> | 2022-08-29 23:14:59 +0300 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2022-09-03 14:11:40 +0300 |
| commit | 134038b075cb1dae21623499d765973d286ac94a (patch) | |
| tree | 9c7f3e1e4fba744e22a2885fa1fe7916f6833c51 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | a2bdf10ce96efbccabdad7216db5587c1213996c (diff) | |
| download | linux-134038b075cb1dae21623499d765973d286ac94a.tar.xz | |
platform/x86: wmi: Allow duplicate GUIDs for drivers that use struct wmi_driver
The WMI subsystem in the kernel currently tracks WMI devices by
a GUID string not by ACPI device. The GUID used by the `wmi-bmof`
module however is available from many devices on nearly every machine.
This originally was thought to be a bug, but as it happens on most
machines it is a design mistake. It has been fixed by tying an ACPI
device to the driver with struct wmi_driver. So drivers that have
moved over to struct wmi_driver can actually support multiple
instantiations of a GUID without any problem.
Add an allow list into wmi.c for GUIDs that the drivers that are known
to use struct wmi_driver. The list is populated with `wmi-bmof` right
now. The additional instances of that in sysfs with be suffixed with -%d
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220829201500.6341-1-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions