From: Bob Moore <robert.moore@xxxxxxxxx> 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@xxxxxxxxx> Signed-off-by: Erik Schmauss <erik.schmauss@xxxxxxxxx> --- drivers/acpi/acpica/tbxfload.c | 32 ++++++++++++++++++++++++++++++++ include/acpi/acpixf.h | 3 +++ 2 files changed, 35 insertions(+) diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c index 86f1693f6d29..ce86e7945e90 100644 --- a/drivers/acpi/acpica/tbxfload.c +++ b/drivers/acpi/acpica/tbxfload.c @@ -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) diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index e5e041413581..109b2f14b6c6 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -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)) -- 2.21.0
