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ACPI: Add _OST support for ACPI CPU hotplug 

Changed acpi_processor_hotplug_notify() to call ACPI _OST method
when ACPI CPU hotplug operation has completed.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Toshi Kani 2012-05-23 20:25:21 -06:00 committed by Len Brown
parent c4753e57b7
commit 51af3b9202
1 changed files with 20 additions and 8 deletions
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28
drivers/acpi/processor_driver.c
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@ -701,9 +701,9 @@ static void acpi_processor_hotplug_notify(acpi_handle handle,
{
struct acpi_processor *pr;
struct acpi_device *device = NULL;
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
int result;
switch (event) {
case ACPI_NOTIFY_BUS_CHECK:
case ACPI_NOTIFY_DEVICE_CHECK:
@ -715,14 +715,18 @@ static void acpi_processor_hotplug_notify(acpi_handle handle,
if (!is_processor_present(handle))
break;
if (acpi_bus_get_device(handle, &device)) {
result = acpi_processor_device_add(handle, &device);
if (result)
printk(KERN_ERR PREFIX
"Unable to add the device\n");
if (!acpi_bus_get_device(handle, &device))
break;
result = acpi_processor_device_add(handle, &device);
if (result) {
printk(KERN_ERR PREFIX "Unable to add the device\n");
break;
}
ost_code = ACPI_OST_SC_SUCCESS;
break;
case ACPI_NOTIFY_EJECT_REQUEST:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"received ACPI_NOTIFY_EJECT_REQUEST\n"));
@ -736,15 +740,23 @@ static void acpi_processor_hotplug_notify(acpi_handle handle,
if (!pr) {
printk(KERN_ERR PREFIX
"Driver data is NULL, dropping EJECT\n");
return;
break;
}
/* REVISIT: update when eject is supported */
ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
break;
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;
}