diff options
Diffstat (limited to 'drivers/acpi/utilities/utdelete.c')
| -rw-r--r-- | drivers/acpi/utilities/utdelete.c | 431 |
1 files changed, 165 insertions, 266 deletions
diff --git a/drivers/acpi/utilities/utdelete.c b/drivers/acpi/utilities/utdelete.c index bc540302268..2bc878f7a12 100644 --- a/drivers/acpi/utilities/utdelete.c +++ b/drivers/acpi/utilities/utdelete.c @@ -41,7 +41,6 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include <acpi/acpi.h> #include <acpi/acinterp.h> #include <acpi/acnamesp.h> @@ -49,19 +48,13 @@ #include <acpi/amlcode.h> #define _COMPONENT ACPI_UTILITIES - ACPI_MODULE_NAME ("utdelete") +ACPI_MODULE_NAME("utdelete") /* Local prototypes */ +static void acpi_ut_delete_internal_obj(union acpi_operand_object *object); static void -acpi_ut_delete_internal_obj ( - union acpi_operand_object *object); - -static void -acpi_ut_update_ref_count ( - union acpi_operand_object *object, - u32 action); - +acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action); /******************************************************************************* * @@ -76,18 +69,14 @@ acpi_ut_update_ref_count ( * ******************************************************************************/ -static void -acpi_ut_delete_internal_obj ( - union acpi_operand_object *object) +static void acpi_ut_delete_internal_obj(union acpi_operand_object *object) { - void *obj_pointer = NULL; - union acpi_operand_object *handler_desc; - union acpi_operand_object *second_desc; - union acpi_operand_object *next_desc; - - - ACPI_FUNCTION_TRACE_PTR ("ut_delete_internal_obj", object); + void *obj_pointer = NULL; + union acpi_operand_object *handler_desc; + union acpi_operand_object *second_desc; + union acpi_operand_object *next_desc; + ACPI_FUNCTION_TRACE_PTR("ut_delete_internal_obj", object); if (!object) { return_VOID; @@ -97,11 +86,12 @@ acpi_ut_delete_internal_obj ( * Must delete or free any pointers within the object that are not * actual ACPI objects (for example, a raw buffer pointer). */ - switch (ACPI_GET_OBJECT_TYPE (object)) { + switch (ACPI_GET_OBJECT_TYPE(object)) { case ACPI_TYPE_STRING: - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** String %p, ptr %p\n", - object, object->string.pointer)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "**** String %p, ptr %p\n", object, + object->string.pointer)); /* Free the actual string buffer */ @@ -112,11 +102,11 @@ acpi_ut_delete_internal_obj ( } break; - case ACPI_TYPE_BUFFER: - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** Buffer %p, ptr %p\n", - object, object->buffer.pointer)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "**** Buffer %p, ptr %p\n", object, + object->buffer.pointer)); /* Free the actual buffer */ @@ -127,11 +117,11 @@ acpi_ut_delete_internal_obj ( } break; - case ACPI_TYPE_PACKAGE: - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, " **** Package of count %X\n", - object->package.count)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + " **** Package of count %X\n", + object->package.count)); /* * Elements of the package are not handled here, they are deleted @@ -143,11 +133,11 @@ acpi_ut_delete_internal_obj ( obj_pointer = object->package.elements; break; - case ACPI_TYPE_DEVICE: if (object->device.gpe_block) { - (void) acpi_ev_delete_gpe_block (object->device.gpe_block); + (void)acpi_ev_delete_gpe_block(object->device. + gpe_block); } /* Walk the handler list for this device */ @@ -155,54 +145,51 @@ acpi_ut_delete_internal_obj ( handler_desc = object->device.handler; while (handler_desc) { next_desc = handler_desc->address_space.next; - acpi_ut_remove_reference (handler_desc); + acpi_ut_remove_reference(handler_desc); handler_desc = next_desc; } break; - case ACPI_TYPE_MUTEX: - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "***** Mutex %p, Semaphore %p\n", - object, object->mutex.semaphore)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "***** Mutex %p, Semaphore %p\n", + object, object->mutex.semaphore)); - acpi_ex_unlink_mutex (object); - (void) acpi_os_delete_semaphore (object->mutex.semaphore); + acpi_ex_unlink_mutex(object); + (void)acpi_os_delete_semaphore(object->mutex.semaphore); break; - case ACPI_TYPE_EVENT: - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "***** Event %p, Semaphore %p\n", - object, object->event.semaphore)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "***** Event %p, Semaphore %p\n", + object, object->event.semaphore)); - (void) acpi_os_delete_semaphore (object->event.semaphore); + (void)acpi_os_delete_semaphore(object->event.semaphore); object->event.semaphore = NULL; break; - case ACPI_TYPE_METHOD: - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "***** Method %p\n", object)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "***** Method %p\n", object)); /* Delete the method semaphore if it exists */ if (object->method.semaphore) { - (void) acpi_os_delete_semaphore (object->method.semaphore); + (void)acpi_os_delete_semaphore(object->method. + semaphore); object->method.semaphore = NULL; } break; - case ACPI_TYPE_REGION: - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "***** Region %p\n", object)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "***** Region %p\n", object)); - second_desc = acpi_ns_get_secondary_object (object); + second_desc = acpi_ns_get_secondary_object(object); if (second_desc) { /* * Free the region_context if and only if the handler is one of the @@ -211,32 +198,33 @@ acpi_ut_delete_internal_obj ( */ handler_desc = object->region.handler; if (handler_desc) { - if (handler_desc->address_space.hflags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) { - obj_pointer = second_desc->extra.region_context; + if (handler_desc->address_space. + hflags & + ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) { + obj_pointer = + second_desc->extra.region_context; } - acpi_ut_remove_reference (handler_desc); + acpi_ut_remove_reference(handler_desc); } /* Now we can free the Extra object */ - acpi_ut_delete_object_desc (second_desc); + acpi_ut_delete_object_desc(second_desc); } break; - case ACPI_TYPE_BUFFER_FIELD: - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "***** Buffer Field %p\n", object)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "***** Buffer Field %p\n", object)); - second_desc = acpi_ns_get_secondary_object (object); + second_desc = acpi_ns_get_secondary_object(object); if (second_desc) { - acpi_ut_delete_object_desc (second_desc); + acpi_ut_delete_object_desc(second_desc); } break; - default: break; } @@ -244,21 +232,20 @@ acpi_ut_delete_internal_obj ( /* Free any allocated memory (pointer within the object) found above */ if (obj_pointer) { - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Deleting Object Subptr %p\n", - obj_pointer)); - ACPI_MEM_FREE (obj_pointer); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "Deleting Object Subptr %p\n", obj_pointer)); + ACPI_MEM_FREE(obj_pointer); } /* Now the object can be safely deleted */ - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Deleting Object %p [%s]\n", - object, acpi_ut_get_object_type_name (object))); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "Deleting Object %p [%s]\n", + object, acpi_ut_get_object_type_name(object))); - acpi_ut_delete_object_desc (object); + acpi_ut_delete_object_desc(object); return_VOID; } - /******************************************************************************* * * FUNCTION: acpi_ut_delete_internal_object_list @@ -272,29 +259,24 @@ acpi_ut_delete_internal_obj ( * ******************************************************************************/ -void -acpi_ut_delete_internal_object_list ( - union acpi_operand_object **obj_list) +void acpi_ut_delete_internal_object_list(union acpi_operand_object **obj_list) { - union acpi_operand_object **internal_obj; - - - ACPI_FUNCTION_TRACE ("ut_delete_internal_object_list"); + union acpi_operand_object **internal_obj; + ACPI_FUNCTION_TRACE("ut_delete_internal_object_list"); /* Walk the null-terminated internal list */ for (internal_obj = obj_list; *internal_obj; internal_obj++) { - acpi_ut_remove_reference (*internal_obj); + acpi_ut_remove_reference(*internal_obj); } /* Free the combined parameter pointer list and object array */ - ACPI_MEM_FREE (obj_list); + ACPI_MEM_FREE(obj_list); return_VOID; } - /******************************************************************************* * * FUNCTION: acpi_ut_update_ref_count @@ -309,16 +291,12 @@ acpi_ut_delete_internal_object_list ( ******************************************************************************/ static void -acpi_ut_update_ref_count ( - union acpi_operand_object *object, - u32 action) +acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action) { - u16 count; - u16 new_count; - - - ACPI_FUNCTION_NAME ("ut_update_ref_count"); + u16 count; + u16 new_count; + ACPI_FUNCTION_NAME("ut_update_ref_count"); if (!object) { return; @@ -338,58 +316,55 @@ acpi_ut_update_ref_count ( new_count++; object->common.reference_count = new_count; - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "Obj %p Refs=%X, [Incremented]\n", - object, new_count)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "Obj %p Refs=%X, [Incremented]\n", + object, new_count)); break; - case REF_DECREMENT: if (count < 1) { - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "Obj %p Refs=%X, can't decrement! (Set to 0)\n", - object, new_count)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "Obj %p Refs=%X, can't decrement! (Set to 0)\n", + object, new_count)); new_count = 0; - } - else { + } else { new_count--; - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "Obj %p Refs=%X, [Decremented]\n", - object, new_count)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "Obj %p Refs=%X, [Decremented]\n", + object, new_count)); } - if (ACPI_GET_OBJECT_TYPE (object) == ACPI_TYPE_METHOD) { - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "Method Obj %p Refs=%X, [Decremented]\n", - object, new_count)); + if (ACPI_GET_OBJECT_TYPE(object) == ACPI_TYPE_METHOD) { + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "Method Obj %p Refs=%X, [Decremented]\n", + object, new_count)); } object->common.reference_count = new_count; if (new_count == 0) { - acpi_ut_delete_internal_obj (object); + acpi_ut_delete_internal_obj(object); } break; - case REF_FORCE_DELETE: - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "Obj %p Refs=%X, Force delete! (Set to 0)\n", - object, count)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "Obj %p Refs=%X, Force delete! (Set to 0)\n", + object, count)); new_count = 0; object->common.reference_count = new_count; - acpi_ut_delete_internal_obj (object); + acpi_ut_delete_internal_obj(object); break; - default: - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown action (%X)\n", action)); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unknown action (%X)\n", + action)); break; } @@ -399,15 +374,14 @@ acpi_ut_update_ref_count ( */ if (count > ACPI_MAX_REFERENCE_COUNT) { - ACPI_DEBUG_PRINT ((ACPI_DB_WARN, - "**** Warning **** Large Reference Count (%X) in object %p\n\n", - count, object)); + ACPI_DEBUG_PRINT((ACPI_DB_WARN, + "**** Warning **** Large Reference Count (%X) in object %p\n\n", + count, object)); } return; } - /******************************************************************************* * * FUNCTION: acpi_ut_update_object_reference @@ -431,65 +405,42 @@ acpi_ut_update_ref_count ( ******************************************************************************/ acpi_status -acpi_ut_update_object_reference ( - union acpi_operand_object *object, - u16 action) +acpi_ut_update_object_reference(union acpi_operand_object * object, u16 action) { - acpi_status status; - u32 i; - union acpi_generic_state *state_list = NULL; - union acpi_generic_state *state; - union acpi_operand_object *tmp; - - ACPI_FUNCTION_TRACE_PTR ("ut_update_object_reference", object); + acpi_status status = AE_OK; + union acpi_generic_state *state_list = NULL; + union acpi_operand_object *next_object = NULL; + union acpi_generic_state *state; + acpi_native_uint i; + ACPI_FUNCTION_TRACE_PTR("ut_update_object_reference", object); - /* Ignore a null object ptr */ + while (object) { + /* Make sure that this isn't a namespace handle */ - if (!object) { - return_ACPI_STATUS (AE_OK); - } - - /* Make sure that this isn't a namespace handle */ - - if (ACPI_GET_DESCRIPTOR_TYPE (object) == ACPI_DESC_TYPE_NAMED) { - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "Object %p is NS handle\n", object)); - return_ACPI_STATUS (AE_OK); - } - - state = acpi_ut_create_update_state (object, action); - - while (state) { - object = state->update.object; - action = state->update.value; - acpi_ut_delete_generic_state (state); + if (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED) { + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "Object %p is NS handle\n", object)); + return_ACPI_STATUS(AE_OK); + } /* * All sub-objects must have their reference count incremented also. * Different object types have different subobjects. */ - switch (ACPI_GET_OBJECT_TYPE (object)) { + switch (ACPI_GET_OBJECT_TYPE(object)) { case ACPI_TYPE_DEVICE: - tmp = object->device.system_notify; - if (tmp && (tmp->common.reference_count <= 1) && action == REF_DECREMENT) - object->device.system_notify = NULL; - acpi_ut_update_ref_count (tmp, action); - - tmp = object->device.device_notify; - if (tmp && (tmp->common.reference_count <= 1) && action == REF_DECREMENT) - object->device.device_notify = NULL; - acpi_ut_update_ref_count (tmp, action); - + acpi_ut_update_ref_count(object->device.system_notify, + action); + acpi_ut_update_ref_count(object->device.device_notify, + action); break; - case ACPI_TYPE_PACKAGE: - /* - * We must update all the sub-objects of the package - * (Each of whom may have their own sub-objects, etc. + * We must update all the sub-objects of the package, + * each of whom may have their own sub-objects. */ for (i = 0; i < object->package.count; i++) { /* @@ -497,116 +448,67 @@ acpi_ut_update_object_reference ( * Note: There can be null elements within the package, * these are simply ignored */ - status = acpi_ut_create_update_state_and_push ( - object->package.elements[i], action, &state_list); - if (ACPI_FAILURE (status)) { + status = + acpi_ut_create_update_state_and_push + (object->package.elements[i], action, + &state_list); + if (ACPI_FAILURE(status)) { goto error_exit; } - - tmp = object->package.elements[i]; - if (tmp && (tmp->common.reference_count <= 1) && action == REF_DECREMENT) - object->package.elements[i] = NULL; } break; - case ACPI_TYPE_BUFFER_FIELD: - status = acpi_ut_create_update_state_and_push ( - object->buffer_field.buffer_obj, action, &state_list); - if (ACPI_FAILURE (status)) { - goto error_exit; - } - - tmp = object->buffer_field.buffer_obj; - if ( tmp && (tmp->common.reference_count <= 1) && action == REF_DECREMENT) - object->buffer_field.buffer_obj = NULL; + next_object = object->buffer_field.buffer_obj; break; - case ACPI_TYPE_LOCAL_REGION_FIELD: - status = acpi_ut_create_update_state_and_push ( - object->field.region_obj, action, &state_list); - if (ACPI_FAILURE (status)) { - goto error_exit; - } - - tmp = object->field.region_obj; - if ( tmp && (tmp->common.reference_count <= 1) && action == REF_DECREMENT) - object->field.region_obj = NULL; - break; - + next_object = object->field.region_obj; + break; case ACPI_TYPE_LOCAL_BANK_FIELD: - status = acpi_ut_create_update_state_and_push ( - object->bank_field.bank_obj, action, &state_list); - if (ACPI_FAILURE (status)) { + next_object = object->bank_field.bank_obj; + status = + acpi_ut_create_update_state_and_push(object-> + bank_field. + region_obj, + action, + &state_list); + if (ACPI_FAILURE(status)) { goto error_exit; } - - tmp = object->bank_field.bank_obj; - if ( tmp && (tmp->common.reference_count <= 1) && action == REF_DECREMENT) - object->bank_field.bank_obj = NULL; - - status = acpi_ut_create_update_state_and_push ( - object->bank_field.region_obj, action, &state_list); - if (ACPI_FAILURE (status)) { - goto error_exit; - } - - tmp = object->bank_field.region_obj; - if ( tmp && (tmp->common.reference_count <= 1) && action == REF_DECREMENT) - object->bank_field.region_obj = NULL; break; - case ACPI_TYPE_LOCAL_INDEX_FIELD: - status = acpi_ut_create_update_state_and_push ( - object->index_field.index_obj, action, &state_list); - if (ACPI_FAILURE (status)) { - goto error_exit; - } - - tmp = object->index_field.index_obj; - if ( tmp && (tmp->common.reference_count <= 1) && action == REF_DECREMENT) - object->index_field.index_obj = NULL; - - status = acpi_ut_create_update_state_and_push ( - object->index_field.data_obj, action, &state_list); - if (ACPI_FAILURE (status)) { + next_object = object->index_field.index_obj; + status = + acpi_ut_create_update_state_and_push(object-> + index_field. + data_obj, + action, + &state_list); + if (ACPI_FAILURE(status)) { goto error_exit; } - - tmp = object->index_field.data_obj; - if ( tmp && (tmp->common.reference_count <= 1) && action == REF_DECREMENT) - object->index_field.data_obj = NULL; break; - case ACPI_TYPE_LOCAL_REFERENCE: - /* * The target of an Index (a package, string, or buffer) must track * changes to the ref count of the index. */ if (object->reference.opcode == AML_INDEX_OP) { - status = acpi_ut_create_update_state_and_push ( - object->reference.object, action, &state_list); - if (ACPI_FAILURE (status)) { - goto error_exit; - } + next_object = object->reference.object; } break; - case ACPI_TYPE_REGION: default: - - /* No subobjects */ - break; + break; /* No subobjects */ } /* @@ -614,25 +516,31 @@ acpi_ut_update_object_reference ( * happen after we update the sub-objects in case this causes the * main object to be deleted. */ - acpi_ut_update_ref_count (object, action); + acpi_ut_update_ref_count(object, action); + object = NULL; /* Move on to the next object to be updated */ - state = acpi_ut_pop_generic_state (&state_list); + if (next_object) { + object = next_object; + next_object = NULL; + } else if (state_list) { + state = acpi_ut_pop_generic_state(&state_list); + object = state->update.object; + acpi_ut_delete_generic_state(state); + } } - return_ACPI_STATUS (AE_OK); - + return_ACPI_STATUS(AE_OK); -error_exit: + error_exit: - ACPI_REPORT_ERROR (("Could not update object reference count, %s\n", - acpi_format_exception (status))); + ACPI_REPORT_ERROR(("Could not update object reference count, %s\n", + acpi_format_exception(status))); - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ut_add_reference @@ -646,31 +554,27 @@ error_exit: * ******************************************************************************/ -void -acpi_ut_add_reference ( - union acpi_operand_object *object) +void acpi_ut_add_reference(union acpi_operand_object *object) { - ACPI_FUNCTION_TRACE_PTR ("ut_add_reference", object); - + ACPI_FUNCTION_TRACE_PTR("ut_add_reference", object); /* Ensure that we have a valid object */ - if (!acpi_ut_valid_internal_object (object)) { + if (!acpi_ut_valid_internal_object(object)) { return_VOID; } - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "Obj %p Current Refs=%X [To Be Incremented]\n", - object, object->common.reference_count)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "Obj %p Current Refs=%X [To Be Incremented]\n", + object, object->common.reference_count)); /* Increment the reference count */ - (void) acpi_ut_update_object_reference (object, REF_INCREMENT); + (void)acpi_ut_update_object_reference(object, REF_INCREMENT); return_VOID; } - /******************************************************************************* * * FUNCTION: acpi_ut_remove_reference @@ -683,13 +587,10 @@ acpi_ut_add_reference ( * ******************************************************************************/ -void -acpi_ut_remove_reference ( - union acpi_operand_object *object) +void acpi_ut_remove_reference(union acpi_operand_object *object) { - ACPI_FUNCTION_TRACE_PTR ("ut_remove_reference", object); - + ACPI_FUNCTION_TRACE_PTR("ut_remove_reference", object); /* * Allow a NULL pointer to be passed in, just ignore it. This saves @@ -697,27 +598,25 @@ acpi_ut_remove_reference ( * */ if (!object || - (ACPI_GET_DESCRIPTOR_TYPE (object) == ACPI_DESC_TYPE_NAMED)) { + (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED)) { return_VOID; } /* Ensure that we have a valid object */ - if (!acpi_ut_valid_internal_object (object)) { + if (!acpi_ut_valid_internal_object(object)) { return_VOID; } - ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, - "Obj %p Current Refs=%X [To Be Decremented]\n", - object, object->common.reference_count)); + ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, + "Obj %p Current Refs=%X [To Be Decremented]\n", + object, object->common.reference_count)); /* * Decrement the reference count, and only actually delete the object * if the reference count becomes 0. (Must also decrement the ref count * of all subobjects!) */ - (void) acpi_ut_update_object_reference (object, REF_DECREMENT); + (void)acpi_ut_update_object_reference(object, REF_DECREMENT); return_VOID; } - - |