From: Bob Moore <robert.moore@intel.com>
Date: Wed, 22 Apr 2009 02:48:57 +0000 (+0800)
Subject: ACPICA: Change behavior of object copy for mutex/event objects
X-Git-Tag: upstream/snapshot3+hdmi~18597^2~24
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=33a1d461d294722dd15ffe17651bdd48b5763883;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

ACPICA: Change behavior of object copy for mutex/event objects

When copying these internal objects, cannot simply copy the
underlying OS object. A new OS object must be created.

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>
---

diff --git a/drivers/acpi/acpica/utcopy.c b/drivers/acpi/acpica/utcopy.c
index 919624f..0f0c64b 100644
--- a/drivers/acpi/acpica/utcopy.c
+++ b/drivers/acpi/acpica/utcopy.c
@@ -676,6 +676,7 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
 {
 	u16 reference_count;
 	union acpi_operand_object *next_object;
+	acpi_status status;
 
 	/* Save fields from destination that we don't want to overwrite */
 
@@ -768,6 +769,28 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
 		}
 		break;
 
+		/*
+		 * For Mutex and Event objects, we cannot simply copy the underlying
+		 * OS object. We must create a new one.
+		 */
+	case ACPI_TYPE_MUTEX:
+
+		status = acpi_os_create_mutex(&dest_desc->mutex.os_mutex);
+		if (ACPI_FAILURE(status)) {
+			return status;
+		}
+		break;
+
+	case ACPI_TYPE_EVENT:
+
+		status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
+						  &dest_desc->event.
+						  os_semaphore);
+		if (ACPI_FAILURE(status)) {
+			return status;
+		}
+		break;
+
 	default:
 		/* Nothing to do for other simple objects */
 		break;