diff options
| -rw-r--r-- | drivers/acpi/acpi_memhotplug.c | 43 |
1 files changed, 32 insertions, 11 deletions
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index d98571385656..24c807f96636 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -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"); + /* + * 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 */ - break; + + /* _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; } |