Pull sem2mutex into release branch

3 files changed, 25 insertions, 24 deletions

diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 07bc6dfe662b..b55ad1add1b0 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);
@@ -837,9 +838,9 @@ 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);
 
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index f36db22ce1ae..44a7b168e0ec 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -34,6 +34,7 @@
 #ifdef CONFIG_X86_ACPI_CPUFREQ_PROC_INTF
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/mutex.h>
 
 #include <asm/uaccess.h>
 #endif
@@ -48,7 +49,7 @@
 #define _COMPONENT              ACPI_PROCESSOR_COMPONENT
 ACPI_MODULE_NAME("acpi_processor")
 
-static DECLARE_MUTEX(performance_sem);
+static DEFINE_MUTEX(performance_mutex);
 
 /*
  * _PPC support is implemented as a CPUfreq policy notifier:
@@ -72,7 +73,7 @@ static int acpi_processor_ppc_notifier(struct notifier_block *nb,
         struct acpi_processor *pr;
         unsigned int ppc = 0;
 
-        down(&performance_sem);
+        mutex_lock(&performance_mutex);
 
         if (event != CPUFREQ_INCOMPATIBLE)
                 goto out;
@@ -93,7 +94,7 @@ static int acpi_processor_ppc_notifier(struct notifier_block *nb,
                                      core_frequency * 1000);
 
       out:
-        up(&performance_sem);
+        mutex_unlock(&performance_mutex);
 
         return 0;
 }
@@ -564,16 +565,16 @@ acpi_processor_register_performance(struct acpi_processor_performance
         if (!(acpi_processor_ppc_status & PPC_REGISTERED))
                 return_VALUE(-EINVAL);
 
-        down(&performance_sem);
+        mutex_lock(&performance_mutex);
 
         pr = processors[cpu];
         if (!pr) {
-                up(&performance_sem);
+                mutex_unlock(&performance_mutex);
                 return_VALUE(-ENODEV);
         }
 
         if (pr->performance) {
-                up(&performance_sem);
+                mutex_unlock(&performance_mutex);
                 return_VALUE(-EBUSY);
         }
 
@@ -583,13 +584,13 @@ acpi_processor_register_performance(struct acpi_processor_performance
 
         if (acpi_processor_get_performance_info(pr)) {
                 pr->performance = NULL;
-                up(&performance_sem);
+                mutex_unlock(&performance_mutex);
                 return_VALUE(-EIO);
         }
 
         acpi_cpufreq_add_file(pr);
 
-        up(&performance_sem);
+        mutex_unlock(&performance_mutex);
         return_VALUE(0);
 }
 
@@ -603,11 +604,11 @@ acpi_processor_unregister_performance(struct acpi_processor_performance
 
         ACPI_FUNCTION_TRACE("acpi_processor_unregister_performance");
 
-        down(&performance_sem);
+        mutex_lock(&performance_mutex);
 
         pr = processors[cpu];
         if (!pr) {
-                up(&performance_sem);
+                mutex_unlock(&performance_mutex);
                 return_VOID;
         }
 
@@ -617,7 +618,7 @@ acpi_processor_unregister_performance(struct acpi_processor_performance
 
         acpi_cpufreq_remove_file(pr);
 
-        up(&performance_sem);
+        mutex_unlock(&performance_mutex);
 
         return_VOID;
 }
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index fc676ac0e3ed..fe3693de7ba3 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -459,7 +459,6 @@ static int acpi_bus_get_perf_flags(struct acpi_device *device)
    -------------------------------------------------------------------------- */
 
 static LIST_HEAD(acpi_bus_drivers);
-static DECLARE_MUTEX(acpi_bus_drivers_lock);
 
 /**
  * acpi_bus_match - match device IDs to driver's supported IDs