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ACPICA: Add new external interface, acpi_unload_table()

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ACPICA commit c69369cd9cf0134e1aac516e97d612947daa8dc2

Unload a table via the table_index.

Link: https://github.com/acpica/acpica/commit/c69369cd
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Bob Moore 2019-10-25 14:36:52 -07:00 committed by Rafael J. Wysocki
parent aaf7566f33
commit 42d939fadb
2 changed files with 35 additions and 0 deletions
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32
drivers/acpi/acpica/tbxfload.c
View file

@ -390,3 +390,35 @@ acpi_status acpi_unload_parent_table(acpi_handle object)
}
ACPI_EXPORT_SYMBOL(acpi_unload_parent_table)
/*******************************************************************************
*
* FUNCTION: acpi_unload_table
*
* PARAMETERS: table_index - Index as returned by acpi_load_table
*
* RETURN: Status
*
* DESCRIPTION: Via the table_index representing an SSDT or OEMx table, unloads
* the table and deletes all namespace objects associated with
* that table. Unloading of the DSDT is not allowed.
* Note: Mainly intended to support hotplug removal of SSDTs.
*
******************************************************************************/
acpi_status acpi_unload_table(u32 table_index)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_unload_table);
if (table_index == 1) {
/* table_index==1 means DSDT is the owner. DSDT cannot be unloaded */
return_ACPI_STATUS(AE_TYPE);
}
status = acpi_tb_unload_table(table_index);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_unload_table)

3
include/acpi/acpixf.h
View file

@ -460,6 +460,9 @@ ACPI_EXTERNAL_RETURN_STATUS(acpi_status ACPI_INIT_FUNCTION
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_load_table(struct acpi_table_header *table))
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_unload_table(u32 table_index))
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_unload_parent_table(acpi_handle object))