--- old/usr/src/uts/intel/io/acpica/events/evglock.c	jeu. déc. 26 13:48:56 2013
+++ /dev/null	jeu. déc. 26 13:48:47 2013
@@ -1,367 +0,0 @@
-/******************************************************************************
- *
- * Module Name: evglock - Global Lock support
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2011, Intel Corp.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions, and the following disclaimer,
- *    without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- *    substantially similar to the "NO WARRANTY" disclaimer below
- *    ("Disclaimer") and any redistribution must be conditioned upon
- *    including a substantially similar Disclaimer requirement for further
- *    binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- *    of any contributors may be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- */
-
-#include "acpi.h"
-#include "accommon.h"
-#include "acevents.h"
-#include "acinterp.h"
-
-#define _COMPONENT          ACPI_EVENTS
-        ACPI_MODULE_NAME    ("evglock")
-
-
-/* Local prototypes */
-
-static UINT32
-AcpiEvGlobalLockHandler (
-    void                    *Context);
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvInitGlobalLockHandler
- *
- * PARAMETERS:  None
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Install a handler for the global lock release event
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvInitGlobalLockHandler (
-    void)
-{
-    ACPI_STATUS             Status;
-
-
-    ACPI_FUNCTION_TRACE (EvInitGlobalLockHandler);
-
-
-    /* Attempt installation of the global lock handler */
-
-    Status = AcpiInstallFixedEventHandler (ACPI_EVENT_GLOBAL,
-                AcpiEvGlobalLockHandler, NULL);
-
-    /*
-     * If the global lock does not exist on this platform, the attempt to
-     * enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick).
-     * Map to AE_OK, but mark global lock as not present. Any attempt to
-     * actually use the global lock will be flagged with an error.
-     */
-    AcpiGbl_GlobalLockPresent = FALSE;
-    if (Status == AE_NO_HARDWARE_RESPONSE)
-    {
-        ACPI_ERROR ((AE_INFO,
-            "No response from Global Lock hardware, disabling lock"));
-
-        return_ACPI_STATUS (AE_OK);
-    }
-
-    Status = AcpiOsCreateLock (&AcpiGbl_GlobalLockPendingLock);
-    if (ACPI_FAILURE (Status))
-    {
-        return_ACPI_STATUS (Status);
-    }
-
-    AcpiGbl_GlobalLockPending = FALSE;
-    AcpiGbl_GlobalLockPresent = TRUE;
-    return_ACPI_STATUS (Status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvRemoveGlobalLockHandler
- *
- * PARAMETERS:  None
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Remove the handler for the Global Lock
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvRemoveGlobalLockHandler (
-    void)
-{
-    ACPI_STATUS             Status;
-
-
-    ACPI_FUNCTION_TRACE (EvRemoveGlobalLockHandler);
-
-    AcpiGbl_GlobalLockPresent = FALSE;
-    Status = AcpiRemoveFixedEventHandler (ACPI_EVENT_GLOBAL,
-                AcpiEvGlobalLockHandler);
-
-    return_ACPI_STATUS (Status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvGlobalLockHandler
- *
- * PARAMETERS:  Context         - From thread interface, not used
- *
- * RETURN:      ACPI_INTERRUPT_HANDLED
- *
- * DESCRIPTION: Invoked directly from the SCI handler when a global lock
- *              release interrupt occurs. If there is actually a pending
- *              request for the lock, signal the waiting thread.
- *
- ******************************************************************************/
-
-static UINT32
-AcpiEvGlobalLockHandler (
-    void                    *Context)
-{
-    ACPI_STATUS             Status;
-    ACPI_CPU_FLAGS          Flags;
-
-
-    Flags = AcpiOsAcquireLock (AcpiGbl_GlobalLockPendingLock);
-
-    /*
-     * If a request for the global lock is not actually pending,
-     * we are done. This handles "spurious" global lock interrupts
-     * which are possible (and have been seen) with bad BIOSs.
-     */
-    if (!AcpiGbl_GlobalLockPending)
-    {
-        goto CleanupAndExit;
-    }
-
-    /*
-     * Send a unit to the global lock semaphore. The actual acquisition
-     * of the global lock will be performed by the waiting thread.
-     */
-    Status = AcpiOsSignalSemaphore (AcpiGbl_GlobalLockSemaphore, 1);
-    if (ACPI_FAILURE (Status))
-    {
-        ACPI_ERROR ((AE_INFO, "Could not signal Global Lock semaphore"));
-    }
-
-    AcpiGbl_GlobalLockPending = FALSE;
-
-
-CleanupAndExit:
-
-    AcpiOsReleaseLock (AcpiGbl_GlobalLockPendingLock, Flags);
-    return (ACPI_INTERRUPT_HANDLED);
-}
-
-
-/******************************************************************************
- *
- * FUNCTION:    AcpiEvAcquireGlobalLock
- *
- * PARAMETERS:  Timeout         - Max time to wait for the lock, in millisec.
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Attempt to gain ownership of the Global Lock.
- *
- * MUTEX:       Interpreter must be locked
- *
- * Note: The original implementation allowed multiple threads to "acquire" the
- * Global Lock, and the OS would hold the lock until the last thread had
- * released it. However, this could potentially starve the BIOS out of the
- * lock, especially in the case where there is a tight handshake between the
- * Embedded Controller driver and the BIOS. Therefore, this implementation
- * allows only one thread to acquire the HW Global Lock at a time, and makes
- * the global lock appear as a standard mutex on the OS side.
- *
- *****************************************************************************/
-
-ACPI_STATUS
-AcpiEvAcquireGlobalLock (
-    UINT16                  Timeout)
-{
-    ACPI_CPU_FLAGS          Flags;
-    ACPI_STATUS             Status;
-    BOOLEAN                 Acquired = FALSE;
-
-
-    ACPI_FUNCTION_TRACE (EvAcquireGlobalLock);
-
-
-    /*
-     * Only one thread can acquire the GL at a time, the GlobalLockMutex
-     * enforces this. This interface releases the interpreter if we must wait.
-     */
-    Status = AcpiExSystemWaitMutex (AcpiGbl_GlobalLockMutex->Mutex.OsMutex,
-                Timeout);
-    if (ACPI_FAILURE (Status))
-    {
-        return_ACPI_STATUS (Status);
-    }
-
-    /*
-     * Update the global lock handle and check for wraparound. The handle is
-     * only used for the external global lock interfaces, but it is updated
-     * here to properly handle the case where a single thread may acquire the
-     * lock via both the AML and the AcpiAcquireGlobalLock interfaces. The
-     * handle is therefore updated on the first acquire from a given thread
-     * regardless of where the acquisition request originated.
-     */
-    AcpiGbl_GlobalLockHandle++;
-    if (AcpiGbl_GlobalLockHandle == 0)
-    {
-        AcpiGbl_GlobalLockHandle = 1;
-    }
-
-    /*
-     * Make sure that a global lock actually exists. If not, just
-     * treat the lock as a standard mutex.
-     */
-    if (!AcpiGbl_GlobalLockPresent)
-    {
-        AcpiGbl_GlobalLockAcquired = TRUE;
-        return_ACPI_STATUS (AE_OK);
-    }
-
-    Flags = AcpiOsAcquireLock (AcpiGbl_GlobalLockPendingLock);
-
-    do
-    {
-        /* Attempt to acquire the actual hardware lock */
-
-        ACPI_ACQUIRE_GLOBAL_LOCK (AcpiGbl_FACS, Acquired);
-        if (Acquired)
-        {
-            AcpiGbl_GlobalLockAcquired = TRUE;
-            ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
-                "Acquired hardware Global Lock\n"));
-            break;
-        }
-
-        /*
-         * Did not get the lock. The pending bit was set above, and
-         * we must now wait until we receive the global lock
-         * released interrupt.
-         */
-        AcpiGbl_GlobalLockPending = TRUE;
-        AcpiOsReleaseLock (AcpiGbl_GlobalLockPendingLock, Flags);
-
-        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
-            "Waiting for hardware Global Lock\n"));
-
-        /*
-         * Wait for handshake with the global lock interrupt handler.
-         * This interface releases the interpreter if we must wait.
-         */
-        Status = AcpiExSystemWaitSemaphore (AcpiGbl_GlobalLockSemaphore,
-                    ACPI_WAIT_FOREVER);
-
-        Flags = AcpiOsAcquireLock (AcpiGbl_GlobalLockPendingLock);
-
-    } while (ACPI_SUCCESS (Status));
-
-    AcpiGbl_GlobalLockPending = FALSE;
-    AcpiOsReleaseLock (AcpiGbl_GlobalLockPendingLock, Flags);
-
-    return_ACPI_STATUS (Status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    AcpiEvReleaseGlobalLock
- *
- * PARAMETERS:  None
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Releases ownership of the Global Lock.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvReleaseGlobalLock (
-    void)
-{
-    BOOLEAN                 Pending = FALSE;
-    ACPI_STATUS             Status = AE_OK;
-
-
-    ACPI_FUNCTION_TRACE (EvReleaseGlobalLock);
-
-
-    /* Lock must be already acquired */
-
-    if (!AcpiGbl_GlobalLockAcquired)
-    {
-        ACPI_WARNING ((AE_INFO,
-            "Cannot release the ACPI Global Lock, it has not been acquired"));
-        return_ACPI_STATUS (AE_NOT_ACQUIRED);
-    }
-
-    if (AcpiGbl_GlobalLockPresent)
-    {
-        /* Allow any thread to release the lock */
-
-        ACPI_RELEASE_GLOBAL_LOCK (AcpiGbl_FACS, Pending);
-
-        /*
-         * If the pending bit was set, we must write GBL_RLS to the control
-         * register
-         */
-        if (Pending)
-        {
-            Status = AcpiWriteBitRegister (
-                        ACPI_BITREG_GLOBAL_LOCK_RELEASE, ACPI_ENABLE_EVENT);
-        }
-
-        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Released hardware Global Lock\n"));
-    }
-
-    AcpiGbl_GlobalLockAcquired = FALSE;
-
-    /* Release the local GL mutex */
-
-    AcpiOsReleaseMutex (AcpiGbl_GlobalLockMutex->Mutex.OsMutex);
-    return_ACPI_STATUS (Status);
-}
--- /dev/null	jeu. déc. 26 13:48:47 2013
+++ new/usr/src/common/acpica/components/events/evglock.c	jeu. déc. 26 13:48:56 2013
@@ -0,0 +1,378 @@
+/******************************************************************************
+ *
+ * Module Name: evglock - Global Lock support
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include "acpi.h"
+#include "accommon.h"
+#include "acevents.h"
+#include "acinterp.h"
+
+#define _COMPONENT          ACPI_EVENTS
+        ACPI_MODULE_NAME    ("evglock")
+
+#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
+
+/* Local prototypes */
+
+static UINT32
+AcpiEvGlobalLockHandler (
+    void                    *Context);
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvInitGlobalLockHandler
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Install a handler for the global lock release event
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEvInitGlobalLockHandler (
+    void)
+{
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE (EvInitGlobalLockHandler);
+
+
+    /* If Hardware Reduced flag is set, there is no global lock */
+
+    if (AcpiGbl_ReducedHardware)
+    {
+        return_ACPI_STATUS (AE_OK);
+    }
+
+    /* Attempt installation of the global lock handler */
+
+    Status = AcpiInstallFixedEventHandler (ACPI_EVENT_GLOBAL,
+                AcpiEvGlobalLockHandler, NULL);
+
+    /*
+     * If the global lock does not exist on this platform, the attempt to
+     * enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick).
+     * Map to AE_OK, but mark global lock as not present. Any attempt to
+     * actually use the global lock will be flagged with an error.
+     */
+    AcpiGbl_GlobalLockPresent = FALSE;
+    if (Status == AE_NO_HARDWARE_RESPONSE)
+    {
+        ACPI_ERROR ((AE_INFO,
+            "No response from Global Lock hardware, disabling lock"));
+
+        return_ACPI_STATUS (AE_OK);
+    }
+
+    Status = AcpiOsCreateLock (&AcpiGbl_GlobalLockPendingLock);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    AcpiGbl_GlobalLockPending = FALSE;
+    AcpiGbl_GlobalLockPresent = TRUE;
+    return_ACPI_STATUS (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvRemoveGlobalLockHandler
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Remove the handler for the Global Lock
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEvRemoveGlobalLockHandler (
+    void)
+{
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_TRACE (EvRemoveGlobalLockHandler);
+
+    AcpiGbl_GlobalLockPresent = FALSE;
+    Status = AcpiRemoveFixedEventHandler (ACPI_EVENT_GLOBAL,
+                AcpiEvGlobalLockHandler);
+
+    AcpiOsDeleteLock (AcpiGbl_GlobalLockPendingLock);
+    return_ACPI_STATUS (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvGlobalLockHandler
+ *
+ * PARAMETERS:  Context         - From thread interface, not used
+ *
+ * RETURN:      ACPI_INTERRUPT_HANDLED
+ *
+ * DESCRIPTION: Invoked directly from the SCI handler when a global lock
+ *              release interrupt occurs. If there is actually a pending
+ *              request for the lock, signal the waiting thread.
+ *
+ ******************************************************************************/
+
+static UINT32
+AcpiEvGlobalLockHandler (
+    void                    *Context)
+{
+    ACPI_STATUS             Status;
+    ACPI_CPU_FLAGS          Flags;
+
+
+    Flags = AcpiOsAcquireLock (AcpiGbl_GlobalLockPendingLock);
+
+    /*
+     * If a request for the global lock is not actually pending,
+     * we are done. This handles "spurious" global lock interrupts
+     * which are possible (and have been seen) with bad BIOSs.
+     */
+    if (!AcpiGbl_GlobalLockPending)
+    {
+        goto CleanupAndExit;
+    }
+
+    /*
+     * Send a unit to the global lock semaphore. The actual acquisition
+     * of the global lock will be performed by the waiting thread.
+     */
+    Status = AcpiOsSignalSemaphore (AcpiGbl_GlobalLockSemaphore, 1);
+    if (ACPI_FAILURE (Status))
+    {
+        ACPI_ERROR ((AE_INFO, "Could not signal Global Lock semaphore"));
+    }
+
+    AcpiGbl_GlobalLockPending = FALSE;
+
+
+CleanupAndExit:
+
+    AcpiOsReleaseLock (AcpiGbl_GlobalLockPendingLock, Flags);
+    return (ACPI_INTERRUPT_HANDLED);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiEvAcquireGlobalLock
+ *
+ * PARAMETERS:  Timeout         - Max time to wait for the lock, in millisec.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Attempt to gain ownership of the Global Lock.
+ *
+ * MUTEX:       Interpreter must be locked
+ *
+ * Note: The original implementation allowed multiple threads to "acquire" the
+ * Global Lock, and the OS would hold the lock until the last thread had
+ * released it. However, this could potentially starve the BIOS out of the
+ * lock, especially in the case where there is a tight handshake between the
+ * Embedded Controller driver and the BIOS. Therefore, this implementation
+ * allows only one thread to acquire the HW Global Lock at a time, and makes
+ * the global lock appear as a standard mutex on the OS side.
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiEvAcquireGlobalLock (
+    UINT16                  Timeout)
+{
+    ACPI_CPU_FLAGS          Flags;
+    ACPI_STATUS             Status;
+    BOOLEAN                 Acquired = FALSE;
+
+
+    ACPI_FUNCTION_TRACE (EvAcquireGlobalLock);
+
+
+    /*
+     * Only one thread can acquire the GL at a time, the GlobalLockMutex
+     * enforces this. This interface releases the interpreter if we must wait.
+     */
+    Status = AcpiExSystemWaitMutex (AcpiGbl_GlobalLockMutex->Mutex.OsMutex,
+                Timeout);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    /*
+     * Update the global lock handle and check for wraparound. The handle is
+     * only used for the external global lock interfaces, but it is updated
+     * here to properly handle the case where a single thread may acquire the
+     * lock via both the AML and the AcpiAcquireGlobalLock interfaces. The
+     * handle is therefore updated on the first acquire from a given thread
+     * regardless of where the acquisition request originated.
+     */
+    AcpiGbl_GlobalLockHandle++;
+    if (AcpiGbl_GlobalLockHandle == 0)
+    {
+        AcpiGbl_GlobalLockHandle = 1;
+    }
+
+    /*
+     * Make sure that a global lock actually exists. If not, just
+     * treat the lock as a standard mutex.
+     */
+    if (!AcpiGbl_GlobalLockPresent)
+    {
+        AcpiGbl_GlobalLockAcquired = TRUE;
+        return_ACPI_STATUS (AE_OK);
+    }
+
+    Flags = AcpiOsAcquireLock (AcpiGbl_GlobalLockPendingLock);
+
+    do
+    {
+        /* Attempt to acquire the actual hardware lock */
+
+        ACPI_ACQUIRE_GLOBAL_LOCK (AcpiGbl_FACS, Acquired);
+        if (Acquired)
+        {
+            AcpiGbl_GlobalLockAcquired = TRUE;
+            ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+                "Acquired hardware Global Lock\n"));
+            break;
+        }
+
+        /*
+         * Did not get the lock. The pending bit was set above, and
+         * we must now wait until we receive the global lock
+         * released interrupt.
+         */
+        AcpiGbl_GlobalLockPending = TRUE;
+        AcpiOsReleaseLock (AcpiGbl_GlobalLockPendingLock, Flags);
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+            "Waiting for hardware Global Lock\n"));
+
+        /*
+         * Wait for handshake with the global lock interrupt handler.
+         * This interface releases the interpreter if we must wait.
+         */
+        Status = AcpiExSystemWaitSemaphore (AcpiGbl_GlobalLockSemaphore,
+                    ACPI_WAIT_FOREVER);
+
+        Flags = AcpiOsAcquireLock (AcpiGbl_GlobalLockPendingLock);
+
+    } while (ACPI_SUCCESS (Status));
+
+    AcpiGbl_GlobalLockPending = FALSE;
+    AcpiOsReleaseLock (AcpiGbl_GlobalLockPendingLock, Flags);
+
+    return_ACPI_STATUS (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiEvReleaseGlobalLock
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Releases ownership of the Global Lock.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiEvReleaseGlobalLock (
+    void)
+{
+    BOOLEAN                 Pending = FALSE;
+    ACPI_STATUS             Status = AE_OK;
+
+
+    ACPI_FUNCTION_TRACE (EvReleaseGlobalLock);
+
+
+    /* Lock must be already acquired */
+
+    if (!AcpiGbl_GlobalLockAcquired)
+    {
+        ACPI_WARNING ((AE_INFO,
+            "Cannot release the ACPI Global Lock, it has not been acquired"));
+        return_ACPI_STATUS (AE_NOT_ACQUIRED);
+    }
+
+    if (AcpiGbl_GlobalLockPresent)
+    {
+        /* Allow any thread to release the lock */
+
+        ACPI_RELEASE_GLOBAL_LOCK (AcpiGbl_FACS, Pending);
+
+        /*
+         * If the pending bit was set, we must write GBL_RLS to the control
+         * register
+         */
+        if (Pending)
+        {
+            Status = AcpiWriteBitRegister (
+                        ACPI_BITREG_GLOBAL_LOCK_RELEASE, ACPI_ENABLE_EVENT);
+        }
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Released hardware Global Lock\n"));
+    }
+
+    AcpiGbl_GlobalLockAcquired = FALSE;
+
+    /* Release the local GL mutex */
+
+    AcpiOsReleaseMutex (AcpiGbl_GlobalLockMutex->Mutex.OsMutex);
+    return_ACPI_STATUS (Status);
+}
+
+#endif /* !ACPI_REDUCED_HARDWARE */
