===================================================================
@@ -43,6 +43,7 @@ DEFINE_MUTEX(acpi_device_lock);
LIST_HEAD(acpi_wakeup_device_list);
static LIST_HEAD(acpi_device_del_list);
static DEFINE_MUTEX(acpi_device_del_lock);
+static DEFINE_MUTEX(acpi_hp_context_lock);
struct acpi_device_bus_id{
char bus_id[15];
@@ -62,6 +63,16 @@ void acpi_scan_lock_release(void)
}
EXPORT_SYMBOL_GPL(acpi_scan_lock_release);
+void acpi_lock_hp_context(void)
+{
+ mutex_lock(&acpi_hp_context_lock);
+}
+
+void acpi_unlock_hp_context(void)
+{
+ mutex_unlock(&acpi_hp_context_lock);
+}
+
int acpi_scan_add_handler(struct acpi_scan_handler *handler)
{
if (!handler || !handler->attach)
===================================================================
@@ -58,7 +58,6 @@
static LIST_HEAD(bridge_list);
static DEFINE_MUTEX(bridge_mutex);
-static DEFINE_MUTEX(acpiphp_context_lock);
static void handle_hotplug_event(acpi_handle handle, u32 type, void *data);
static void acpiphp_sanitize_bus(struct pci_bus *bus);
@@ -75,7 +74,7 @@ static void acpiphp_context_handler(acpi
* acpiphp_init_context - Create hotplug context and grab a reference to it.
* @adev: ACPI device object to create the context for.
*
- * Call under acpiphp_context_lock.
+ * Call under acpi_hp_context_lock.
*/
static struct acpiphp_context *acpiphp_init_context(struct acpi_device *adev)
{
@@ -100,7 +99,7 @@ static struct acpiphp_context *acpiphp_i
* acpiphp_get_context - Get hotplug context and grab a reference to it.
* @handle: ACPI object handle to get the context for.
*
- * Call under acpiphp_context_lock.
+ * Call under acpi_hp_context_lock.
*/
static struct acpiphp_context *acpiphp_get_context(acpi_handle handle)
{
@@ -122,7 +121,7 @@ static struct acpiphp_context *acpiphp_g
*
* The context object is removed if there are no more references to it.
*
- * Call under acpiphp_context_lock.
+ * Call under acpi_hp_context_lock.
*/
static void acpiphp_put_context(struct acpiphp_context *context)
{
@@ -151,7 +150,7 @@ static void free_bridge(struct kref *kre
struct acpiphp_slot *slot, *next;
struct acpiphp_func *func, *tmp;
- mutex_lock(&acpiphp_context_lock);
+ acpi_lock_hp_context();
bridge = container_of(kref, struct acpiphp_bridge, ref);
@@ -175,7 +174,7 @@ static void free_bridge(struct kref *kre
pci_dev_put(bridge->pci_dev);
kfree(bridge);
- mutex_unlock(&acpiphp_context_lock);
+ acpi_unlock_hp_context();
}
/*
@@ -291,17 +290,17 @@ static acpi_status register_slot(acpi_ha
device = (adr >> 16) & 0xffff;
function = adr & 0xffff;
- mutex_lock(&acpiphp_context_lock);
+ acpi_lock_hp_context();
context = acpiphp_init_context(adev);
if (!context) {
- mutex_unlock(&acpiphp_context_lock);
+ acpi_unlock_hp_context();
acpi_handle_err(handle, "No hotplug context\n");
return AE_NOT_EXIST;
}
newfunc = &context->func;
newfunc->function = function;
newfunc->parent = bridge;
- mutex_unlock(&acpiphp_context_lock);
+ acpi_unlock_hp_context();
if (acpi_has_method(handle, "_EJ0"))
newfunc->flags = FUNC_HAS_EJ0;
@@ -319,9 +318,9 @@ static acpi_status register_slot(acpi_ha
slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL);
if (!slot) {
- mutex_lock(&acpiphp_context_lock);
+ acpi_lock_hp_context();
acpiphp_put_context(context);
- mutex_unlock(&acpiphp_context_lock);
+ acpi_unlock_hp_context();
return AE_NO_MEMORY;
}
@@ -396,7 +395,7 @@ static struct acpiphp_bridge *acpiphp_ha
struct acpiphp_context *context;
struct acpiphp_bridge *bridge = NULL;
- mutex_lock(&acpiphp_context_lock);
+ acpi_lock_hp_context();
context = acpiphp_get_context(handle);
if (context) {
bridge = context->bridge;
@@ -405,7 +404,7 @@ static struct acpiphp_bridge *acpiphp_ha
acpiphp_put_context(context);
}
- mutex_unlock(&acpiphp_context_lock);
+ acpi_unlock_hp_context();
return bridge;
}
@@ -796,12 +795,12 @@ static void hotplug_event(u32 type, void
acpi_handle handle = context->adev->handle;
struct acpiphp_bridge *bridge;
- mutex_lock(&acpiphp_context_lock);
+ acpi_lock_hp_context();
bridge = context->bridge;
if (bridge)
get_bridge(bridge);
- mutex_unlock(&acpiphp_context_lock);
+ acpi_unlock_hp_context();
pci_lock_rescan_remove();
@@ -902,16 +901,16 @@ static void handle_hotplug_event(acpi_ha
goto out;
}
- mutex_lock(&acpiphp_context_lock);
+ acpi_lock_hp_context();
context = acpiphp_get_context(handle);
if (context && !WARN_ON(context->adev->handle != handle)) {
get_bridge(context->func.parent);
acpiphp_put_context(context);
acpi_hotplug_execute(hotplug_event_work, context, type);
- mutex_unlock(&acpiphp_context_lock);
+ acpi_unlock_hp_context();
return;
}
- mutex_unlock(&acpiphp_context_lock);
+ acpi_unlock_hp_context();
ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
out:
@@ -967,10 +966,10 @@ void acpiphp_enumerate_slots(struct pci_
* parent is going to be handled by pciehp, in which case this
* bridge is not interesting to us either.
*/
- mutex_lock(&acpiphp_context_lock);
+ acpi_lock_hp_context();
context = acpiphp_get_context(handle);
if (!context) {
- mutex_unlock(&acpiphp_context_lock);
+ acpi_unlock_hp_context();
put_device(&bus->dev);
pci_dev_put(bridge->pci_dev);
kfree(bridge);
@@ -980,7 +979,7 @@ void acpiphp_enumerate_slots(struct pci_
context->bridge = bridge;
/* Get a reference to the parent bridge. */
get_bridge(context->func.parent);
- mutex_unlock(&acpiphp_context_lock);
+ acpi_unlock_hp_context();
}
/* must be added to the list prior to calling register_slot */
===================================================================
@@ -402,6 +402,8 @@ static inline bool acpi_bus_can_wakeup(a
void acpi_scan_lock_acquire(void);
void acpi_scan_lock_release(void);
+void acpi_lock_hp_context(void);
+void acpi_unlock_hp_context(void);
int acpi_scan_add_handler(struct acpi_scan_handler *handler);
int acpi_bus_register_driver(struct acpi_driver *driver);
void acpi_bus_unregister_driver(struct acpi_driver *driver);