diff options
Diffstat (limited to 'drivers/acpi/events/evxface.c')
| -rw-r--r-- | drivers/acpi/events/evxface.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/events/evxface.c b/drivers/acpi/events/evxface.c index b38b39dde54..ba16fda3a15 100644 --- a/drivers/acpi/events/evxface.c +++ b/drivers/acpi/events/evxface.c @@ -275,6 +275,7 @@ acpi_install_notify_handler(acpi_handle device, * only one <external> global handler can be regsitered (per notify type). */ if (device == ACPI_ROOT_OBJECT) { + /* Make sure the handler is not already installed */ if (((handler_type & ACPI_SYSTEM_NOTIFY) && @@ -317,6 +318,7 @@ acpi_install_notify_handler(acpi_handle device, obj_desc = acpi_ns_get_attached_object(node); if (obj_desc) { + /* Object exists - make sure there's no handler */ if (((handler_type & ACPI_SYSTEM_NOTIFY) && @@ -370,6 +372,7 @@ acpi_install_notify_handler(acpi_handle device, } if (handler_type == ACPI_ALL_NOTIFY) { + /* Extra ref if installed in both */ acpi_ut_add_reference(notify_obj); |