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From: Erik Schmauss <erik.schmauss@intel.com>
To: "Rafael J . Wysocki" <rafael@kernel.org>, linux-acpi@vger.kernel.org
Cc: andriy.shevchenko@linux.intel.com,
	Bob Moore <robert.moore@intel.com>,
	Erik Schmauss <erik.schmauss@intel.com>
Subject: [PATCH v2 04/12] ACPICA: Add new external interface, acpi_unload_table
Date: Fri, 25 Oct 2019 14:36:52 -0700	[thread overview]
Message-ID: <20191025213700.14685-5-erik.schmauss@intel.com> (raw)
In-Reply-To: <20191025213700.14685-1-erik.schmauss@intel.com>

From: Bob Moore <robert.moore@intel.com>

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>
---
 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


  parent reply	other threads:[~2019-10-25 21:54 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-25 21:36 [PATCH v2 00/12] ACPICA version 20191018v2 Erik Schmauss
2019-10-25 21:36 ` [PATCH v2 01/12] ACPICA: Results from Clang changes/fixes From Clang V5.0.1. Mostly "set but never read" warnings Erik Schmauss
2019-10-25 21:36 ` [PATCH v2 02/12] ACPICA: Win OSL: Replace get_tick_count with get_tick_count64 Erik Schmauss
2019-10-25 21:36 ` [PATCH v2 03/12] ACPICA: More Clang changes - V8.0.1 Fixed all "dead assignment" warnings Erik Schmauss
2019-10-25 21:36 ` Erik Schmauss [this message]
2019-10-25 21:36 ` [PATCH v2 05/12] ACPICA: make acpi_load_table() return table index Erik Schmauss
2019-10-26 14:44   ` Andy Shevchenko
2019-10-28 17:15     ` Schmauss, Erik
2019-10-28 15:52   ` Andy Shevchenko
2019-10-25 21:36 ` [PATCH v2 06/12] ACPICA: utilities: add flag to only display data when dumping buffers Erik Schmauss
2019-10-25 21:36 ` [PATCH v2 07/12] ACPICA: debugger: add command to dump all fields of a particular subtype Erik Schmauss
2019-10-25 21:36 ` [PATCH v2 08/12] ACPICA: debugger: surround field unit output with braces '{' Erik Schmauss
2019-10-25 21:36 ` [PATCH v2 09/12] ACPICA: debugger: add field unit support for acpi_db_get_next_token Erik Schmauss
2019-10-25 21:36 ` [PATCH v2 10/12] ACPICA: acpiexec: initialize all simple types and field units from user input Erik Schmauss
2019-10-25 21:36 ` [PATCH v2 11/12] ACPICA: debugger: remove leading whitespaces when converting a string to a buffer Erik Schmauss
2019-10-25 21:37 ` [PATCH v2 12/12] ACPICA: Update version to 20191018 Erik Schmauss
2019-10-26 14:42 ` [PATCH v2 00/12] ACPICA version 20191018v2 Andy Shevchenko
2019-10-28 15:58 ` Andy Shevchenko
2019-10-28 17:49   ` Schmauss, Erik
2019-10-28 21:16     ` Rafael J. Wysocki
2019-10-29  9:56       ` Andy Shevchenko

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