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authorArmin Wolf <W_Armin@gmx.de>2024-02-19 12:59:18 +0100
committerIlpo Järvinen <ilpo.jarvinen@linux.intel.com>2024-02-27 14:44:31 +0200
commit3c4303518a118a4fd5ce879bc2ad399004f6838d (patch)
treed6a94cd060586f89873bb70b4cf20efeb25eaf2d
parent56230bd733f8cb122632c80bc49ae12b1a9365a6 (diff)
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>
-rw-r--r--Documentation/wmi/acpi-interface.rst5
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.