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Commit b1f00de6 authored by Toshi Kani's avatar Toshi Kani Committed by Len Brown
Browse files

ACPI: Add _OST support for ACPI memory hotplug 



Changed acpi_memory_device_notify() to call ACPI _OST method
when ACPI memory hotplug operation has completed.

Signed-off-by: default avatarToshi Kani <toshi.kani@hp.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 51af3b92

drivers/acpi/acpi_memhotplug.c

+32 −11
Original line number Diff line number Diff line
@@ -341,7 +341,7 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data) 
{

	struct acpi_memory_device *mem_device;

	struct acpi_device *device;



	u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */



	switch (event) {

	case ACPI_NOTIFY_BUS_CHECK:
@@ -354,15 +354,20 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data) 
					  "\nReceived DEVICE CHECK notification for device\n"));

		if (acpi_memory_get_device(handle, &mem_device)) {

			printk(KERN_ERR PREFIX "Cannot find driver data\n");

			return;

			break;

		}



		if (!acpi_memory_check_device(mem_device)) {

			if (acpi_memory_enable_device(mem_device))

				printk(KERN_ERR PREFIX

					    "Cannot enable memory device\n");

		if (acpi_memory_check_device(mem_device))

			break;



		if (acpi_memory_enable_device(mem_device)) {

			printk(KERN_ERR PREFIX "Cannot enable memory device\n");

			break;

		}



		ost_code = ACPI_OST_SC_SUCCESS;

		break;



	case ACPI_NOTIFY_EJECT_REQUEST:

		ACPI_DEBUG_PRINT((ACPI_DB_INFO,

				  "\nReceived EJECT REQUEST notification for device\n"));
@@ -383,19 +388,35 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data) 
		 * TBD: Can also be disabled by Callback registration

		 *      with generic sysfs driver

		 */

		if (acpi_memory_disable_device(mem_device))

			printk(KERN_ERR PREFIX

				    "Disable memory device\n");

		if (acpi_memory_disable_device(mem_device)) {

			printk(KERN_ERR PREFIX "Disable memory device\n");

			/*

		 * TBD: Invoke acpi_bus_remove to cleanup data structures

			 * If _EJ0 was called but failed, _OST is not

			 * necessary.

			 */

			if (mem_device->state == MEMORY_INVALID_STATE)

				return;



			break;

		}



		/*

		 * TBD: Invoke acpi_bus_remove to cleanup data structures

		 */



		/* _EJ0 succeeded; _OST is not necessary */

		return;



	default:

		ACPI_DEBUG_PRINT((ACPI_DB_INFO,

				  "Unsupported event [0x%x]\n", event));

		break;



		/* non-hotplug event; possibly handled by other handler */

		return;

	}



	/* Inform firmware that the hotplug operation has completed */

	(void) acpi_evaluate_hotplug_ost(handle, event, ost_code, NULL);

	return;

}