drivers/acpi/acpica/utmutex.c

Source file repositories/reference/linux-study-clean/drivers/acpi/acpica/utmutex.c

File Facts

System
Linux kernel
Corpus path
drivers/acpi/acpica/utmutex.c
Extension
.c
Size
8580 bytes
Lines
331
Domain
Driver Families
Bucket
drivers/acpi
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (ACPI_FAILURE(status)) {
			return_ACPI_STATUS(status);
		}
	}

	/* Create the spinlocks for use at interrupt level or for speed */

	status = acpi_os_create_lock (&acpi_gbl_gpe_lock);
	if (ACPI_FAILURE (status)) {
		return_ACPI_STATUS (status);
	}

	status = acpi_os_create_raw_lock(&acpi_gbl_hardware_lock);
	if (ACPI_FAILURE (status)) {
		return_ACPI_STATUS (status);
	}

	status = acpi_os_create_lock(&acpi_gbl_reference_count_lock);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Mutex for _OSI support */

	status = acpi_os_create_mutex(&acpi_gbl_osi_mutex);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Create the reader/writer lock for namespace access */

	status = acpi_ut_create_rw_lock(&acpi_gbl_namespace_rw_lock);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_mutex_terminate
 *
 * PARAMETERS:  None.
 *
 * RETURN:      None.
 *
 * DESCRIPTION: Delete all of the system mutex objects. This includes mutexes,
 *              spin locks, and reader/writer locks.
 *
 ******************************************************************************/

void acpi_ut_mutex_terminate(void)
{
	u32 i;

	ACPI_FUNCTION_TRACE(ut_mutex_terminate);

	/* Delete each predefined mutex object */

	for (i = 0; i < ACPI_NUM_MUTEX; i++) {
		acpi_ut_delete_mutex(i);
	}

	acpi_os_delete_mutex(acpi_gbl_osi_mutex);

	/* Delete the spinlocks */

	acpi_os_delete_lock(acpi_gbl_gpe_lock);
	acpi_os_delete_raw_lock(acpi_gbl_hardware_lock);
	acpi_os_delete_lock(acpi_gbl_reference_count_lock);

	/* Delete the reader/writer lock */

	acpi_ut_delete_rw_lock(&acpi_gbl_namespace_rw_lock);
	return_VOID;
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_create_mutex
 *
 * PARAMETERS:  mutex_ID        - ID of the mutex to be created
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Create a mutex object.
 *
 ******************************************************************************/

Annotation

Implementation Notes