X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Facpi%2Fevents%2Fevxface.c;h=b38b39dde54318619a29268bebf4ec6bb61df56c;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=26e9b0e41565a297e913a165e593c4b1717ef957;hpb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;p=linux-2.6.git diff --git a/drivers/acpi/events/evxface.c b/drivers/acpi/events/evxface.c index 26e9b0e41..b38b39dde 100644 --- a/drivers/acpi/events/evxface.c +++ b/drivers/acpi/events/evxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2004, R. Byron Moore + * Copyright (C) 2000 - 2006, R. Byron Moore * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -41,6 +41,7 @@ * POSSIBILITY OF SUCH DAMAGES. */ +#include #include #include @@ -48,8 +49,48 @@ #include #define _COMPONENT ACPI_EVENTS - ACPI_MODULE_NAME ("evxface") +ACPI_MODULE_NAME("evxface") +/******************************************************************************* + * + * FUNCTION: acpi_install_exception_handler + * + * PARAMETERS: Handler - Pointer to the handler function for the + * event + * + * RETURN: Status + * + * DESCRIPTION: Saves the pointer to the handler function + * + ******************************************************************************/ +#ifdef ACPI_FUTURE_USAGE +acpi_status acpi_install_exception_handler(acpi_exception_handler handler) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE("acpi_install_exception_handler"); + + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Don't allow two handlers. */ + + if (acpi_gbl_exception_handler) { + status = AE_ALREADY_EXISTS; + goto cleanup; + } + + /* Install the handler */ + + acpi_gbl_exception_handler = handler; + + cleanup: + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); +} +#endif /* ACPI_FUTURE_USAGE */ /******************************************************************************* * @@ -68,26 +109,22 @@ ******************************************************************************/ acpi_status -acpi_install_fixed_event_handler ( - u32 event, - acpi_event_handler handler, - void *context) +acpi_install_fixed_event_handler(u32 event, + acpi_event_handler handler, void *context) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_install_fixed_event_handler"); + acpi_status status; + ACPI_FUNCTION_TRACE("acpi_install_fixed_event_handler"); /* Parameter validation */ if (event > ACPI_EVENT_MAX) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_ut_acquire_mutex (ACPI_MTX_EVENTS); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Don't allow two handlers. */ @@ -102,26 +139,29 @@ acpi_install_fixed_event_handler ( acpi_gbl_fixed_event_handlers[event].handler = handler; acpi_gbl_fixed_event_handlers[event].context = context; - status = acpi_enable_event (event, 0); - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Could not enable fixed event.\n")); + status = acpi_clear_event(event); + if (ACPI_SUCCESS(status)) + status = acpi_enable_event(event, 0); + if (ACPI_FAILURE(status)) { + ACPI_WARNING((AE_INFO, "Could not enable fixed event %X", + event)); /* Remove the handler */ acpi_gbl_fixed_event_handlers[event].handler = NULL; acpi_gbl_fixed_event_handlers[event].context = NULL; - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Enabled fixed event %X, Handler=%p\n", event, handler)); + } else { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Enabled fixed event %X, Handler=%p\n", event, + handler)); } - -cleanup: - (void) acpi_ut_release_mutex (ACPI_MTX_EVENTS); - return_ACPI_STATUS (status); + cleanup: + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); } +EXPORT_SYMBOL(acpi_install_fixed_event_handler); /******************************************************************************* * @@ -137,48 +177,46 @@ cleanup: ******************************************************************************/ acpi_status -acpi_remove_fixed_event_handler ( - u32 event, - acpi_event_handler handler) +acpi_remove_fixed_event_handler(u32 event, acpi_event_handler handler) { - acpi_status status = AE_OK; - - - ACPI_FUNCTION_TRACE ("acpi_remove_fixed_event_handler"); + acpi_status status = AE_OK; + ACPI_FUNCTION_TRACE("acpi_remove_fixed_event_handler"); /* Parameter validation */ if (event > ACPI_EVENT_MAX) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_ut_acquire_mutex (ACPI_MTX_EVENTS); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Disable the event before removing the handler */ - status = acpi_disable_event (event, 0); + status = acpi_disable_event(event, 0); /* Always Remove the handler */ acpi_gbl_fixed_event_handlers[event].handler = NULL; acpi_gbl_fixed_event_handlers[event].context = NULL; - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_WARN, - "Could not write to fixed event enable register.\n")); - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Disabled fixed event %X.\n", event)); + if (ACPI_FAILURE(status)) { + ACPI_WARNING((AE_INFO, + "Could not write to fixed event enable register %X", + event)); + } else { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Disabled fixed event %X\n", + event)); } - (void) acpi_ut_release_mutex (ACPI_MTX_EVENTS); - return_ACPI_STATUS (status); + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); } +EXPORT_SYMBOL(acpi_remove_fixed_event_handler); /******************************************************************************* * @@ -199,37 +237,32 @@ acpi_remove_fixed_event_handler ( ******************************************************************************/ acpi_status -acpi_install_notify_handler ( - acpi_handle device, - u32 handler_type, - acpi_notify_handler handler, - void *context) +acpi_install_notify_handler(acpi_handle device, + u32 handler_type, + acpi_notify_handler handler, void *context) { - union acpi_operand_object *obj_desc; - union acpi_operand_object *notify_obj; - struct acpi_namespace_node *node; - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_install_notify_handler"); + union acpi_operand_object *obj_desc; + union acpi_operand_object *notify_obj; + struct acpi_namespace_node *node; + acpi_status status; + ACPI_FUNCTION_TRACE("acpi_install_notify_handler"); /* Parameter validation */ - if ((!device) || - (!handler) || - (handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + if ((!device) || + (!handler) || (handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) { + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Convert and validate the device handle */ - node = acpi_ns_map_handle_to_node (device); + node = acpi_ns_map_handle_to_node(device); if (!node) { status = AE_BAD_PARAMETER; goto unlock_and_exit; @@ -245,21 +278,21 @@ acpi_install_notify_handler ( /* Make sure the handler is not already installed */ if (((handler_type & ACPI_SYSTEM_NOTIFY) && - acpi_gbl_system_notify.handler) || - ((handler_type & ACPI_DEVICE_NOTIFY) && - acpi_gbl_device_notify.handler)) { + acpi_gbl_system_notify.handler) || + ((handler_type & ACPI_DEVICE_NOTIFY) && + acpi_gbl_device_notify.handler)) { status = AE_ALREADY_EXISTS; goto unlock_and_exit; } if (handler_type & ACPI_SYSTEM_NOTIFY) { - acpi_gbl_system_notify.node = node; + acpi_gbl_system_notify.node = node; acpi_gbl_system_notify.handler = handler; acpi_gbl_system_notify.context = context; } if (handler_type & ACPI_DEVICE_NOTIFY) { - acpi_gbl_device_notify.node = node; + acpi_gbl_device_notify.node = node; acpi_gbl_device_notify.handler = handler; acpi_gbl_device_notify.context = context; } @@ -275,29 +308,28 @@ acpi_install_notify_handler ( else { /* Notifies allowed on this object? */ - if (!acpi_ev_is_notify_object (node)) { + if (!acpi_ev_is_notify_object(node)) { status = AE_TYPE; goto unlock_and_exit; } /* Check for an existing internal object */ - obj_desc = acpi_ns_get_attached_object (node); + 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) && - obj_desc->common_notify.system_notify) || - ((handler_type & ACPI_DEVICE_NOTIFY) && - obj_desc->common_notify.device_notify)) { + obj_desc->common_notify.system_notify) || + ((handler_type & ACPI_DEVICE_NOTIFY) && + obj_desc->common_notify.device_notify)) { status = AE_ALREADY_EXISTS; goto unlock_and_exit; } - } - else { + } else { /* Create a new object */ - obj_desc = acpi_ut_create_internal_object (node->type); + obj_desc = acpi_ut_create_internal_object(node->type); if (!obj_desc) { status = AE_NO_MEMORY; goto unlock_and_exit; @@ -305,25 +337,27 @@ acpi_install_notify_handler ( /* Attach new object to the Node */ - status = acpi_ns_attach_object (device, obj_desc, node->type); + status = + acpi_ns_attach_object(device, obj_desc, node->type); /* Remove local reference to the object */ - acpi_ut_remove_reference (obj_desc); - if (ACPI_FAILURE (status)) { + acpi_ut_remove_reference(obj_desc); + if (ACPI_FAILURE(status)) { goto unlock_and_exit; } } /* Install the handler */ - notify_obj = acpi_ut_create_internal_object (ACPI_TYPE_LOCAL_NOTIFY); + notify_obj = + acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_NOTIFY); if (!notify_obj) { status = AE_NO_MEMORY; goto unlock_and_exit; } - notify_obj->notify.node = node; + notify_obj->notify.node = node; notify_obj->notify.handler = handler; notify_obj->notify.context = context; @@ -338,16 +372,16 @@ acpi_install_notify_handler ( if (handler_type == ACPI_ALL_NOTIFY) { /* Extra ref if installed in both */ - acpi_ut_add_reference (notify_obj); + acpi_ut_add_reference(notify_obj); } } - -unlock_and_exit: - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (status); + unlock_and_exit: + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return_ACPI_STATUS(status); } +EXPORT_SYMBOL(acpi_install_notify_handler); /******************************************************************************* * @@ -367,36 +401,31 @@ unlock_and_exit: ******************************************************************************/ acpi_status -acpi_remove_notify_handler ( - acpi_handle device, - u32 handler_type, - acpi_notify_handler handler) +acpi_remove_notify_handler(acpi_handle device, + u32 handler_type, acpi_notify_handler handler) { - union acpi_operand_object *notify_obj; - union acpi_operand_object *obj_desc; - struct acpi_namespace_node *node; - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_remove_notify_handler"); + union acpi_operand_object *notify_obj; + union acpi_operand_object *obj_desc; + struct acpi_namespace_node *node; + acpi_status status; + ACPI_FUNCTION_TRACE("acpi_remove_notify_handler"); /* Parameter validation */ - if ((!device) || - (!handler) || - (handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + if ((!device) || + (!handler) || (handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) { + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Convert and validate the device handle */ - node = acpi_ns_map_handle_to_node (device); + node = acpi_ns_map_handle_to_node(device); if (!node) { status = AE_BAD_PARAMETER; goto unlock_and_exit; @@ -405,33 +434,34 @@ acpi_remove_notify_handler ( /* Root Object */ if (device == ACPI_ROOT_OBJECT) { - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Removing notify handler for ROOT object.\n")); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Removing notify handler for namespace root object\n")); if (((handler_type & ACPI_SYSTEM_NOTIFY) && - !acpi_gbl_system_notify.handler) || - ((handler_type & ACPI_DEVICE_NOTIFY) && - !acpi_gbl_device_notify.handler)) { + !acpi_gbl_system_notify.handler) || + ((handler_type & ACPI_DEVICE_NOTIFY) && + !acpi_gbl_device_notify.handler)) { status = AE_NOT_EXIST; goto unlock_and_exit; } /* Make sure all deferred tasks are completed */ - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); acpi_os_wait_events_complete(NULL); - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } if (handler_type & ACPI_SYSTEM_NOTIFY) { - acpi_gbl_system_notify.node = NULL; + acpi_gbl_system_notify.node = NULL; acpi_gbl_system_notify.handler = NULL; acpi_gbl_system_notify.context = NULL; } if (handler_type & ACPI_DEVICE_NOTIFY) { - acpi_gbl_device_notify.node = NULL; + acpi_gbl_device_notify.node = NULL; acpi_gbl_device_notify.handler = NULL; acpi_gbl_device_notify.context = NULL; } @@ -442,14 +472,14 @@ acpi_remove_notify_handler ( else { /* Notifies allowed on this object? */ - if (!acpi_ev_is_notify_object (node)) { + if (!acpi_ev_is_notify_object(node)) { status = AE_TYPE; goto unlock_and_exit; } /* Check for an existing internal object */ - obj_desc = acpi_ns_get_attached_object (node); + obj_desc = acpi_ns_get_attached_object(node); if (!obj_desc) { status = AE_NOT_EXIST; goto unlock_and_exit; @@ -460,59 +490,60 @@ acpi_remove_notify_handler ( if (handler_type & ACPI_SYSTEM_NOTIFY) { notify_obj = obj_desc->common_notify.system_notify; if ((!notify_obj) || - (notify_obj->notify.handler != handler)) { + (notify_obj->notify.handler != handler)) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } /* Make sure all deferred tasks are completed */ - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); acpi_os_wait_events_complete(NULL); - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } /* Remove the handler */ obj_desc->common_notify.system_notify = NULL; - acpi_ut_remove_reference (notify_obj); + acpi_ut_remove_reference(notify_obj); } if (handler_type & ACPI_DEVICE_NOTIFY) { notify_obj = obj_desc->common_notify.device_notify; if ((!notify_obj) || - (notify_obj->notify.handler != handler)) { + (notify_obj->notify.handler != handler)) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } /* Make sure all deferred tasks are completed */ - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); acpi_os_wait_events_complete(NULL); - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } /* Remove the handler */ obj_desc->common_notify.device_notify = NULL; - acpi_ut_remove_reference (notify_obj); + acpi_ut_remove_reference(notify_obj); } } - -unlock_and_exit: - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (status); + unlock_and_exit: + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return_ACPI_STATUS(status); } +EXPORT_SYMBOL(acpi_remove_notify_handler); /******************************************************************************* * * FUNCTION: acpi_install_gpe_handler * - * PARAMETERS: gpe_number - The GPE number within the GPE block - * gpe_block - GPE block (NULL == FADT GPEs) + * PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT + * defined GPEs) + * gpe_number - The GPE number within the GPE block * Type - Whether this GPE should be treated as an * edge- or level-triggered interrupt. * Address - Address of the handler @@ -525,35 +556,31 @@ unlock_and_exit: ******************************************************************************/ acpi_status -acpi_install_gpe_handler ( - acpi_handle gpe_device, - u32 gpe_number, - u32 type, - acpi_event_handler address, - void *context) +acpi_install_gpe_handler(acpi_handle gpe_device, + u32 gpe_number, + u32 type, acpi_event_handler address, void *context) { - struct acpi_gpe_event_info *gpe_event_info; - struct acpi_handler_info *handler; - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_install_gpe_handler"); + struct acpi_gpe_event_info *gpe_event_info; + struct acpi_handler_info *handler; + acpi_status status; + acpi_cpu_flags flags; + ACPI_FUNCTION_TRACE("acpi_install_gpe_handler"); /* Parameter validation */ if ((!address) || (type > ACPI_GPE_XRUPT_TYPE_MASK)) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_ut_acquire_mutex (ACPI_MTX_EVENTS); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Ensure that we have a valid GPE number */ - gpe_event_info = acpi_ev_get_gpe_event_info (gpe_device, gpe_number); + gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); if (!gpe_event_info) { status = AE_BAD_PARAMETER; goto unlock_and_exit; @@ -561,55 +588,57 @@ acpi_install_gpe_handler ( /* Make sure that there isn't a handler there already */ - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == ACPI_GPE_DISPATCH_HANDLER) { + if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == + ACPI_GPE_DISPATCH_HANDLER) { status = AE_ALREADY_EXISTS; goto unlock_and_exit; } /* Allocate and init handler object */ - handler = ACPI_MEM_CALLOCATE (sizeof (struct acpi_handler_info)); + handler = ACPI_MEM_CALLOCATE(sizeof(struct acpi_handler_info)); if (!handler) { status = AE_NO_MEMORY; goto unlock_and_exit; } - handler->address = address; - handler->context = context; + handler->address = address; + handler->context = context; handler->method_node = gpe_event_info->dispatch.method_node; /* Disable the GPE before installing the handler */ - status = acpi_ev_disable_gpe (gpe_event_info); - if (ACPI_FAILURE (status)) { + status = acpi_ev_disable_gpe(gpe_event_info); + if (ACPI_FAILURE(status)) { goto unlock_and_exit; } /* Install the handler */ - acpi_os_acquire_lock (acpi_gbl_gpe_lock, ACPI_NOT_ISR); + flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); gpe_event_info->dispatch.handler = handler; /* Setup up dispatch flags to indicate handler (vs. method) */ - gpe_event_info->flags &= ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); /* Clear bits */ + gpe_event_info->flags &= ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); /* Clear bits */ gpe_event_info->flags |= (u8) (type | ACPI_GPE_DISPATCH_HANDLER); - acpi_os_release_lock (acpi_gbl_gpe_lock, ACPI_NOT_ISR); - + acpi_os_release_lock(acpi_gbl_gpe_lock, flags); -unlock_and_exit: - (void) acpi_ut_release_mutex (ACPI_MTX_EVENTS); - return_ACPI_STATUS (status); + unlock_and_exit: + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); } +EXPORT_SYMBOL(acpi_install_gpe_handler); /******************************************************************************* * * FUNCTION: acpi_remove_gpe_handler * - * PARAMETERS: gpe_number - The event to remove a handler - * gpe_block - GPE block (NULL == FADT GPEs) + * PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT + * defined GPEs) + * gpe_number - The event to remove a handler * Address - Address of the handler * * RETURN: Status @@ -619,33 +648,30 @@ unlock_and_exit: ******************************************************************************/ acpi_status -acpi_remove_gpe_handler ( - acpi_handle gpe_device, - u32 gpe_number, - acpi_event_handler address) +acpi_remove_gpe_handler(acpi_handle gpe_device, + u32 gpe_number, acpi_event_handler address) { - struct acpi_gpe_event_info *gpe_event_info; - struct acpi_handler_info *handler; - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_remove_gpe_handler"); + struct acpi_gpe_event_info *gpe_event_info; + struct acpi_handler_info *handler; + acpi_status status; + acpi_cpu_flags flags; + ACPI_FUNCTION_TRACE("acpi_remove_gpe_handler"); /* Parameter validation */ if (!address) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_ut_acquire_mutex (ACPI_MTX_EVENTS); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Ensure that we have a valid GPE number */ - gpe_event_info = acpi_ev_get_gpe_event_info (gpe_device, gpe_number); + gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); if (!gpe_event_info) { status = AE_BAD_PARAMETER; goto unlock_and_exit; @@ -653,7 +679,8 @@ acpi_remove_gpe_handler ( /* Make sure that a handler is indeed installed */ - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) != ACPI_GPE_DISPATCH_HANDLER) { + if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) != + ACPI_GPE_DISPATCH_HANDLER) { status = AE_NOT_EXIST; goto unlock_and_exit; } @@ -667,51 +694,52 @@ acpi_remove_gpe_handler ( /* Disable the GPE before removing the handler */ - status = acpi_ev_disable_gpe (gpe_event_info); - if (ACPI_FAILURE (status)) { + status = acpi_ev_disable_gpe(gpe_event_info); + if (ACPI_FAILURE(status)) { goto unlock_and_exit; } /* Make sure all deferred tasks are completed */ - (void) acpi_ut_release_mutex (ACPI_MTX_EVENTS); + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); acpi_os_wait_events_complete(NULL); - status = acpi_ut_acquire_mutex (ACPI_MTX_EVENTS); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } /* Remove the handler */ - acpi_os_acquire_lock (acpi_gbl_gpe_lock, ACPI_NOT_ISR); + flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); handler = gpe_event_info->dispatch.handler; /* Restore Method node (if any), set dispatch flags */ gpe_event_info->dispatch.method_node = handler->method_node; - gpe_event_info->flags &= ~ACPI_GPE_DISPATCH_MASK; /* Clear bits */ + gpe_event_info->flags &= ~ACPI_GPE_DISPATCH_MASK; /* Clear bits */ if (handler->method_node) { gpe_event_info->flags |= ACPI_GPE_DISPATCH_METHOD; } - acpi_os_release_lock (acpi_gbl_gpe_lock, ACPI_NOT_ISR); + acpi_os_release_lock(acpi_gbl_gpe_lock, flags); /* Now we can free the handler object */ - ACPI_MEM_FREE (handler); + ACPI_MEM_FREE(handler); - -unlock_and_exit: - (void) acpi_ut_release_mutex (ACPI_MTX_EVENTS); - return_ACPI_STATUS (status); + unlock_and_exit: + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); } +EXPORT_SYMBOL(acpi_remove_gpe_handler); /******************************************************************************* * * FUNCTION: acpi_acquire_global_lock * * PARAMETERS: Timeout - How long the caller is willing to wait - * out_handle - A handle to the lock if acquired + * Handle - Where the handle to the lock is returned + * (if acquired) * * RETURN: Status * @@ -719,27 +747,23 @@ unlock_and_exit: * ******************************************************************************/ -acpi_status -acpi_acquire_global_lock ( - u16 timeout, - u32 *handle) +acpi_status acpi_acquire_global_lock(u16 timeout, u32 * handle) { - acpi_status status; - + acpi_status status; if (!handle) { return (AE_BAD_PARAMETER); } - status = acpi_ex_enter_interpreter (); - if (ACPI_FAILURE (status)) { + status = acpi_ex_enter_interpreter(); + if (ACPI_FAILURE(status)) { return (status); } - status = acpi_ev_acquire_global_lock (timeout); - acpi_ex_exit_interpreter (); + status = acpi_ev_acquire_global_lock(timeout); + acpi_ex_exit_interpreter(); - if (ACPI_SUCCESS (status)) { + if (ACPI_SUCCESS(status)) { acpi_gbl_global_lock_handle++; *handle = acpi_gbl_global_lock_handle; } @@ -747,6 +771,7 @@ acpi_acquire_global_lock ( return (status); } +EXPORT_SYMBOL(acpi_acquire_global_lock); /******************************************************************************* * @@ -756,23 +781,20 @@ acpi_acquire_global_lock ( * * RETURN: Status * - * DESCRIPTION: Release the ACPI Global Lock + * DESCRIPTION: Release the ACPI Global Lock. The handle must be valid. * ******************************************************************************/ -acpi_status -acpi_release_global_lock ( - u32 handle) +acpi_status acpi_release_global_lock(u32 handle) { - acpi_status status; - + acpi_status status; if (handle != acpi_gbl_global_lock_handle) { return (AE_NOT_ACQUIRED); } - status = acpi_ev_release_global_lock (); + status = acpi_ev_release_global_lock(); return (status); } - +EXPORT_SYMBOL(acpi_release_global_lock);