releases/2.6.27.15/acpica-fixed-a-couple-memory-leaks-associated-with-implicit-return.patch

From trenn@suse.de  Tue Feb  3 15:04:59 2009
From: Lin Ming <ming.m.lin@intel.com>
Date: Tue, 27 Jan 2009 17:38:49 +0100
Subject: ACPICA: Fixed a couple memory leaks associated with "implicit return"
To: stable@kernel.org
Cc: Len Brown <len.brown@intel.com>, Bob Moore <robert.moore@intel.com>, Lin Ming <ming.m.lin@intel.com>
Message-ID: <1233074343-23414-8-git-send-email-trenn@suse.de>


From: Lin Ming <ming.m.lin@intel.com>

commit d8a0ec914afa1a994d2f6184ac4c6668b5f8068f upstream

Fixed a couple memory leaks associated with "implicit return" objects
when the AML Interpreter slack mode is enabled.

http://www.acpica.org/bugzilla/show_bug.cgi?id=349

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Thomas Renninger <trenn@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/acpi/dispatcher/dsmethod.c |    3 +++
 drivers/acpi/parser/psparse.c      |    4 +++-
 2 files changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/acpi/dispatcher/dsmethod.c
+++ b/drivers/acpi/dispatcher/dsmethod.c
@@ -103,6 +103,9 @@ acpi_ds_method_error(acpi_status status,
 						    NULL);
 		acpi_ex_enter_interpreter();
 	}
+
+	acpi_ds_clear_implicit_return(walk_state);
+
 #ifdef ACPI_DISASSEMBLER
 	if (ACPI_FAILURE(status)) {
 
--- a/drivers/acpi/parser/psparse.c
+++ b/drivers/acpi/parser/psparse.c
@@ -641,10 +641,12 @@ acpi_status acpi_ps_parse_aml(struct acp
 					    ACPI_WALK_METHOD_RESTART;
 				}
 			} else {
-				/* On error, delete any return object */
+				/* On error, delete any return object or implicit return */
 
 				acpi_ut_remove_reference(previous_walk_state->
 							 return_desc);
+				acpi_ds_clear_implicit_return
+				    (previous_walk_state);
 			}
 		}