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authorBob Moore <robert.moore@intel.com>2009-07-24 11:25:16 +0800
committerLen Brown <len.brown@intel.com>2009-08-28 19:40:38 -0400
commit2f977b36e5f175e5126f280e7a94f0c53d1b1a16 (patch)
treeeac8df3c29d855b0a5d830d55bea2037a78e2268 /drivers/acpi/acpica
parent53e9387bdd8bfef6cffff2d2eb6bd28eca812682 (diff)
downloadop-kernel-dev-2f977b36e5f175e5126f280e7a94f0c53d1b1a16.zip
op-kernel-dev-2f977b36e5f175e5126f280e7a94f0c53d1b1a16.tar.gz
ACPICA: Fix fault if acpi_terminate is called twice
Fixes a problem with the mechanism that prevents problems if the acpi_terminate interface is inadvertently called more than once before the ACPICA code is re-initialized. ACPICA BZ 795. http://acpica.org/bugzilla/show_bug.cgi?id=795 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica')
-rw-r--r--drivers/acpi/acpica/utinit.c22
-rw-r--r--drivers/acpi/acpica/utxface.c16
2 files changed, 19 insertions, 19 deletions
diff --git a/drivers/acpi/acpica/utinit.c b/drivers/acpi/acpica/utinit.c
index a54ca84..9d0919eb 100644
--- a/drivers/acpi/acpica/utinit.c
+++ b/drivers/acpi/acpica/utinit.c
@@ -99,33 +99,19 @@ static void acpi_ut_terminate(void)
*
* FUNCTION: acpi_ut_subsystem_shutdown
*
- * PARAMETERS: none
+ * PARAMETERS: None
*
- * RETURN: none
+ * RETURN: None
*
- * DESCRIPTION: Shutdown the various subsystems. Don't delete the mutex
- * objects here -- because the AML debugger may be still running.
+ * DESCRIPTION: Shutdown the various components. Do not delete the mutex
+ * objects here, because the AML debugger may be still running.
*
******************************************************************************/
void acpi_ut_subsystem_shutdown(void)
{
-
ACPI_FUNCTION_TRACE(ut_subsystem_shutdown);
- /* Just exit if subsystem is already shutdown */
-
- if (acpi_gbl_shutdown) {
- ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
- return_VOID;
- }
-
- /* Subsystem appears active, go ahead and shut it down */
-
- acpi_gbl_shutdown = TRUE;
- acpi_gbl_startup_flags = 0;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
-
#ifndef ACPI_ASL_COMPILER
/* Close the acpi_event Handling */
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index 078a2272..483edbb 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -318,7 +318,7 @@ ACPI_EXPORT_SYMBOL(acpi_initialize_objects)
*
* RETURN: Status
*
- * DESCRIPTION: Shutdown the ACPI subsystem. Release all resources.
+ * DESCRIPTION: Shutdown the ACPICA subsystem and release all resources.
*
******************************************************************************/
acpi_status acpi_terminate(void)
@@ -327,6 +327,19 @@ acpi_status acpi_terminate(void)
ACPI_FUNCTION_TRACE(acpi_terminate);
+ /* Just exit if subsystem is already shutdown */
+
+ if (acpi_gbl_shutdown) {
+ ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ /* Subsystem appears active, go ahead and shut it down */
+
+ acpi_gbl_shutdown = TRUE;
+ acpi_gbl_startup_flags = 0;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
+
/* Terminate the AML Debugger if present */
ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE);
@@ -353,6 +366,7 @@ acpi_status acpi_terminate(void)
}
ACPI_EXPORT_SYMBOL(acpi_terminate)
+
#ifndef ACPI_ASL_COMPILER
#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
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