diff options
Diffstat (limited to 'drivers/acpi/acpica/evgpe.c')
| -rw-r--r-- | drivers/acpi/acpica/evgpe.c | 52 |
1 files changed, 44 insertions, 8 deletions
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c index 836c79b8cd1d..5ed064e8673c 100644 --- a/drivers/acpi/acpica/evgpe.c +++ b/drivers/acpi/acpica/evgpe.c @@ -332,6 +332,7 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list) struct acpi_gpe_register_info *gpe_register_info; struct acpi_gpe_event_info *gpe_event_info; u32 gpe_number; + struct acpi_gpe_handler_info *gpe_handler_info; u32 int_status = ACPI_INTERRUPT_NOT_HANDLED; u8 enabled_status_byte; u32 status_reg; @@ -455,14 +456,49 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list) acpi_gbl_global_event_handler_context); } - /* - * Found an active GPE. Dispatch the event to a handler - * or method. - */ - int_status |= - acpi_ev_gpe_dispatch(gpe_device, - gpe_event_info, - gpe_number); + /* Found an active GPE */ + + if (ACPI_GPE_DISPATCH_TYPE + (gpe_event_info->flags) == + ACPI_GPE_DISPATCH_RAW_HANDLER) { + + /* Dispatch the event to a raw handler */ + + gpe_handler_info = + gpe_event_info->dispatch. + handler; + + /* + * There is no protection around the namespace node + * and the GPE handler to ensure a safe destruction + * because: + * 1. The namespace node is expected to always + * exist after loading a table. + * 2. The GPE handler is expected to be flushed by + * acpi_os_wait_events_complete() before the + * destruction. + */ + acpi_os_release_lock + (acpi_gbl_gpe_lock, flags); + int_status |= + gpe_handler_info-> + address(gpe_device, + gpe_number, + gpe_handler_info-> + context); + flags = + acpi_os_acquire_lock + (acpi_gbl_gpe_lock); + } else { + /* + * Dispatch the event to a standard handler or + * method. + */ + int_status |= + acpi_ev_gpe_dispatch + (gpe_device, gpe_event_info, + gpe_number); + } } } } |