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| author | Armin Wolf <W_Armin@gmx.de> | 2024-02-19 12:59:18 +0100 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2024-02-27 14:44:31 +0200 |
| commit | 3c4303518a118a4fd5ce879bc2ad399004f6838d (patch) | |
| tree | d6a94cd060586f89873bb70b4cf20efeb25eaf2d /Documentation/wmi | |
| parent | 56230bd733f8cb122632c80bc49ae12b1a9365a6 (diff) | |
| download | lwn-3c4303518a118a4fd5ce879bc2ad399004f6838d.tar.gz lwn-3c4303518a118a4fd5ce879bc2ad399004f6838d.zip | |
platform/x86: wmi: Update documentation regarding _WED
Update the WMI ACPI interface documentation to include the fact
that _WED should be evaluated every time an ACPI notification
is received.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20240219115919.16526-5-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'Documentation/wmi')
| -rw-r--r-- | Documentation/wmi/acpi-interface.rst | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/wmi/acpi-interface.rst b/Documentation/wmi/acpi-interface.rst index d31af0ed9c08..06fb7fcf4413 100644 --- a/Documentation/wmi/acpi-interface.rst +++ b/Documentation/wmi/acpi-interface.rst @@ -93,4 +93,7 @@ _WED ACPI method ---------------- Used to retrieve additional WMI event data, its single parameter is a integer -holding the notification ID of the event. +holding the notification ID of the event. This method should be evaluated every +time an ACPI notification is received, since some ACPI implementations use a +queue to store WMI event data items. This queue will overflow after a couple +of WMI events are received without retrieving the associated WMI event data. |