1 files changed, 13 insertions, 12 deletions

diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 8920e8c6e246..228bdb626502 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -38,6 +38,7 @@
 #include <linux/spinlock.h>
 #include <linux/pm.h>
 #include <linux/pci.h>
+#include <linux/mutex.h>
 
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
@@ -91,7 +92,7 @@ static struct {
         int count;
         struct list_head entries;
 } acpi_link;
-DECLARE_MUTEX(acpi_link_lock);
+DEFINE_MUTEX(acpi_link_lock);
 
 /* --------------------------------------------------------------------------
                             PCI Link Device Management
@@ -641,19 +642,19 @@ acpi_pci_link_allocate_irq(acpi_handle handle,
                 return_VALUE(-1);
         }
 
-        down(&acpi_link_lock);
+        mutex_lock(&acpi_link_lock);
         if (acpi_pci_link_allocate(link)) {
-                up(&acpi_link_lock);
+                mutex_unlock(&acpi_link_lock);
                 return_VALUE(-1);
         }
 
         if (!link->irq.active) {
-                up(&acpi_link_lock);
+                mutex_unlock(&acpi_link_lock);
                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Link active IRQ is 0!\n"));
                 return_VALUE(-1);
         }
         link->refcnt++;
-        up(&acpi_link_lock);
+        mutex_unlock(&acpi_link_lock);
 
         if (triggering)
                 *triggering = link->irq.triggering;
@@ -691,9 +692,9 @@ int acpi_pci_link_free_irq(acpi_handle handle)
                 return_VALUE(-1);
         }
 
-        down(&acpi_link_lock);
+        mutex_lock(&acpi_link_lock);
         if (!link->irq.initialized) {
-                up(&acpi_link_lock);
+                mutex_unlock(&acpi_link_lock);
                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Link isn't initialized\n"));
                 return_VALUE(-1);
         }
@@ -716,7 +717,7 @@ int acpi_pci_link_free_irq(acpi_handle handle)
         if (link->refcnt == 0) {
                 acpi_ut_evaluate_object(link->handle, "_DIS", 0, NULL);
         }
-        up(&acpi_link_lock);
+        mutex_unlock(&acpi_link_lock);
         return_VALUE(link->irq.active);
 }
 
@@ -747,7 +748,7 @@ static int acpi_pci_link_add(struct acpi_device *device)
         strcpy(acpi_device_class(device), ACPI_PCI_LINK_CLASS);
         acpi_driver_data(device) = link;
 
-        down(&acpi_link_lock);
+        mutex_lock(&acpi_link_lock);
         result = acpi_pci_link_get_possible(link);
         if (result)
                 goto end;
@@ -782,7 +783,7 @@ static int acpi_pci_link_add(struct acpi_device *device)
       end:
         /* disable all links -- to be activated on use */
         acpi_ut_evaluate_object(link->handle, "_DIS", 0, NULL);
-        up(&acpi_link_lock);
+        mutex_unlock(&acpi_link_lock);
 
         if (result)
                 kfree(link);
@@ -840,9 +841,9 @@ static int acpi_pci_link_remove(struct acpi_device *device, int type)
 
         link = (struct acpi_pci_link *)acpi_driver_data(device);
 
-        down(&acpi_link_lock);
+        mutex_lock(&acpi_link_lock);
         list_del(&link->node);
-        up(&acpi_link_lock);
+        mutex_unlock(&acpi_link_lock);
 
         kfree(link);