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ACPI: osl, add acpi_os_create_lock interface

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Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Lin Ming 2011-03-23 17:26:34 +08:00 committed by Len Brown
parent d8d75b0ee6
commit 9f63b88bd7
2 changed files with 28 additions and 8 deletions
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33
drivers/acpi/osl.c
View file

@ -883,14 +883,6 @@ void acpi_os_wait_events_complete(void *context)
EXPORT_SYMBOL(acpi_os_wait_events_complete);
/*
* Deallocate the memory for a spinlock.
*/
void acpi_os_delete_lock(acpi_spinlock handle)
{
return;
}
acpi_status
acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle)
{
@ -1321,6 +1313,31 @@ int acpi_resources_are_enforced(void)
}
EXPORT_SYMBOL(acpi_resources_are_enforced);
/*
* Create and initialize a spinlock.
*/
acpi_status
acpi_os_create_lock(acpi_spinlock *out_handle)
{
spinlock_t *lock;
lock = ACPI_ALLOCATE(sizeof(spinlock_t));
if (!lock)
return AE_NO_MEMORY;
spin_lock_init(lock);
*out_handle = lock;
return AE_OK;
}
/*
* Deallocate the memory for a spinlock.
*/
void acpi_os_delete_lock(acpi_spinlock handle)
{
ACPI_FREE(handle);
}
/*
* Acquire a spinlock.
*

3
include/acpi/acpiosxf.h
View file

@ -98,6 +98,9 @@ acpi_os_table_override(struct acpi_table_header *existing_table,
/*
* Spinlock primitives
*/
acpi_status
acpi_os_create_lock(acpi_spinlock *out_handle);
void acpi_os_delete_lock(acpi_spinlock handle);
acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock handle);