^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Module Name: utdelete - object deletion and reference count utilities
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <acpi/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "accommon.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "acinterp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "acnamesp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "acevents.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define _COMPONENT ACPI_UTILITIES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) ACPI_MODULE_NAME("utdelete")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /* Local prototypes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static void acpi_ut_delete_internal_obj(union acpi_operand_object *object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * FUNCTION: acpi_ut_delete_internal_obj
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * PARAMETERS: object - Object to be deleted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * RETURN: None
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * DESCRIPTION: Low level object deletion, after reference counts have been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * updated (All reference counts, including sub-objects!)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) void *obj_pointer = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) union acpi_operand_object *handler_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) union acpi_operand_object *second_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) union acpi_operand_object *next_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) union acpi_operand_object *start_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) union acpi_operand_object **last_obj_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) ACPI_FUNCTION_TRACE_PTR(ut_delete_internal_obj, object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) if (!object) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return_VOID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * Must delete or free any pointers within the object that are not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * actual ACPI objects (for example, a raw buffer pointer).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) switch (object->common.type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) case ACPI_TYPE_STRING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) "**** String %p, ptr %p\n", object,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) object->string.pointer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /* Free the actual string buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* But only if it is NOT a pointer into an ACPI table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) obj_pointer = object->string.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) case ACPI_TYPE_BUFFER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) "**** Buffer %p, ptr %p\n", object,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) object->buffer.pointer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /* Free the actual buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* But only if it is NOT a pointer into an ACPI table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) obj_pointer = object->buffer.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) case ACPI_TYPE_PACKAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) " **** Package of count %X\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) object->package.count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * Elements of the package are not handled here, they are deleted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * separately
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /* Free the (variable length) element pointer array */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) obj_pointer = object->package.elements;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * These objects have a possible list of notify handlers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * Device object also may have a GPE block.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) case ACPI_TYPE_DEVICE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (object->device.gpe_block) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) (void)acpi_ev_delete_gpe_block(object->device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) gpe_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /*lint -fallthrough */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) case ACPI_TYPE_PROCESSOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) case ACPI_TYPE_THERMAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /* Walk the address handler list for this object */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) handler_desc = object->common_notify.handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) while (handler_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) next_desc = handler_desc->address_space.next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) acpi_ut_remove_reference(handler_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) handler_desc = next_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) case ACPI_TYPE_MUTEX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) "***** Mutex %p, OS Mutex %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) object, object->mutex.os_mutex));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (object == acpi_gbl_global_lock_mutex) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) /* Global Lock has extra semaphore */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) (void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) acpi_os_delete_semaphore
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) (acpi_gbl_global_lock_semaphore);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) acpi_gbl_global_lock_semaphore = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) acpi_os_delete_mutex(object->mutex.os_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) acpi_gbl_global_lock_mutex = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) acpi_ex_unlink_mutex(object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) acpi_os_delete_mutex(object->mutex.os_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) case ACPI_TYPE_EVENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) "***** Event %p, OS Semaphore %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) object, object->event.os_semaphore));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) (void)acpi_os_delete_semaphore(object->event.os_semaphore);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) object->event.os_semaphore = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) case ACPI_TYPE_METHOD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) "***** Method %p\n", object));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /* Delete the method mutex if it exists */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (object->method.mutex) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) acpi_os_delete_mutex(object->method.mutex->mutex.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) os_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) acpi_ut_delete_object_desc(object->method.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) object->method.mutex = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (object->method.node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) object->method.node = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) case ACPI_TYPE_REGION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) "***** Region %p\n", object));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * Update address_range list. However, only permanent regions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * are installed in this list. (Not created within a method)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (!(object->region.node->flags & ANOBJ_TEMPORARY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) acpi_ut_remove_address_range(object->region.space_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) object->region.node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) second_desc = acpi_ns_get_secondary_object(object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (second_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * Free the region_context if and only if the handler is one of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * default handlers -- and therefore, we created the context object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * locally, it was not created by an external caller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) handler_desc = object->region.handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (handler_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) next_desc =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) handler_desc->address_space.region_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) start_desc = next_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) last_obj_ptr =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) &handler_desc->address_space.region_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /* Remove the region object from the handler list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) while (next_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) if (next_desc == object) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) *last_obj_ptr =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) next_desc->region.next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) /* Walk the linked list of handlers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) last_obj_ptr = &next_desc->region.next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) next_desc = next_desc->region.next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) /* Prevent infinite loop if list is corrupted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (next_desc == start_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) ACPI_ERROR((AE_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) "Circular region list in address handler object %p",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) handler_desc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return_VOID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (handler_desc->address_space.handler_flags &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) /* Deactivate region and free region context */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (handler_desc->address_space.setup) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) (void)handler_desc->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) address_space.setup(object,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) ACPI_REGION_DEACTIVATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) handler_desc->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) address_space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) context,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) &second_desc->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) extra.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) region_context);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) acpi_ut_remove_reference(handler_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) /* Now we can free the Extra object */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) acpi_ut_delete_object_desc(second_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (object->field.internal_pcc_buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) ACPI_FREE(object->field.internal_pcc_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) case ACPI_TYPE_BUFFER_FIELD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) "***** Buffer Field %p\n", object));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) second_desc = acpi_ns_get_secondary_object(object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (second_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) acpi_ut_delete_object_desc(second_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) case ACPI_TYPE_LOCAL_BANK_FIELD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) "***** Bank Field %p\n", object));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) second_desc = acpi_ns_get_secondary_object(object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (second_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) acpi_ut_delete_object_desc(second_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) case ACPI_TYPE_LOCAL_ADDRESS_HANDLER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) "***** Address handler %p\n", object));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) acpi_os_delete_mutex(object->address_space.context_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) /* Free any allocated memory (pointer within the object) found above */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (obj_pointer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) "Deleting Object Subptr %p\n", obj_pointer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) ACPI_FREE(obj_pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) /* Now the object can be safely deleted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) ACPI_DEBUG_PRINT_RAW((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) "%s: Deleting Object %p [%s]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) ACPI_GET_FUNCTION_NAME, object,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) acpi_ut_get_object_type_name(object)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) acpi_ut_delete_object_desc(object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return_VOID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) * FUNCTION: acpi_ut_delete_internal_object_list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * PARAMETERS: obj_list - Pointer to the list to be deleted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) * RETURN: None
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) * DESCRIPTION: This function deletes an internal object list, including both
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) * simple objects and package objects
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) void acpi_ut_delete_internal_object_list(union acpi_operand_object **obj_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) union acpi_operand_object **internal_obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) ACPI_FUNCTION_ENTRY();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) /* Walk the null-terminated internal list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) for (internal_obj = obj_list; *internal_obj; internal_obj++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) acpi_ut_remove_reference(*internal_obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) /* Free the combined parameter pointer list and object array */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) ACPI_FREE(obj_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) * FUNCTION: acpi_ut_update_ref_count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * PARAMETERS: object - Object whose ref count is to be updated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * action - What to do (REF_INCREMENT or REF_DECREMENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) * RETURN: None. Sets new reference count within the object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) * DESCRIPTION: Modify the reference count for an internal acpi object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) u16 original_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) u16 new_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) acpi_cpu_flags lock_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) char *message;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) ACPI_FUNCTION_NAME(ut_update_ref_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (!object) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * Always get the reference count lock. Note: Interpreter and/or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) * Namespace is not always locked when this function is called.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) lock_flags = acpi_os_acquire_lock(acpi_gbl_reference_count_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) original_count = object->common.reference_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) /* Perform the reference count action (increment, decrement) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) switch (action) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) case REF_INCREMENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) new_count = original_count + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) object->common.reference_count = new_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /* The current reference count should never be zero here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (!original_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) ACPI_WARNING((AE_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) "Obj %p, Reference Count was zero before increment\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) object));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) "Obj %p Type %.2X [%s] Refs %.2X [Incremented]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) object, object->common.type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) acpi_ut_get_object_type_name(object),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) new_count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) message = "Incremement";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) case REF_DECREMENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) /* The current reference count must be non-zero */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (original_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) new_count = original_count - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) object->common.reference_count = new_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) if (!original_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) ACPI_WARNING((AE_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) "Obj %p, Reference Count is already zero, cannot decrement\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) object));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) ACPI_DEBUG_PRINT_RAW((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) "%s: Obj %p Type %.2X Refs %.2X [Decremented]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) ACPI_GET_FUNCTION_NAME, object,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) object->common.type, new_count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) /* Actually delete the object on a reference count of zero */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (new_count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) acpi_ut_delete_internal_obj(object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) message = "Decrement";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) ACPI_ERROR((AE_INFO, "Unknown Reference Count action (0x%X)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) action));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) * Sanity check the reference count, for debug purposes only.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) * (A deleted object will have a huge reference count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) if (new_count > ACPI_MAX_REFERENCE_COUNT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) ACPI_WARNING((AE_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) "Large Reference Count (0x%X) in object %p, Type=0x%.2X Operation=%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) new_count, object, object->common.type, message));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) * FUNCTION: acpi_ut_update_object_reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) * PARAMETERS: object - Increment or decrement the ref count for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) * this object and all sub-objects
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) * action - Either REF_INCREMENT or REF_DECREMENT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) * DESCRIPTION: Increment or decrement the object reference count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * Object references are incremented when:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) * 1) An object is attached to a Node (namespace object)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) * 2) An object is copied (all subobjects must be incremented)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * Object references are decremented when:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * 1) An object is detached from an Node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) acpi_ut_update_object_reference(union acpi_operand_object *object, u16 action)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) acpi_status status = AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) union acpi_generic_state *state_list = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) union acpi_operand_object *next_object = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) union acpi_operand_object *prev_object;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) union acpi_generic_state *state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) u32 i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) ACPI_FUNCTION_NAME(ut_update_object_reference);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) while (object) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) /* Make sure that this isn't a namespace handle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) if (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) "Object %p is NS handle\n", object));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) return (AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) * All sub-objects must have their reference count updated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) * also. Different object types have different subobjects.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) switch (object->common.type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) case ACPI_TYPE_DEVICE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) case ACPI_TYPE_PROCESSOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) case ACPI_TYPE_POWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) case ACPI_TYPE_THERMAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) * Update the notify objects for these types (if present)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) * Two lists, system and device notify handlers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) prev_object =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) object->common_notify.notify_list[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) while (prev_object) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) next_object =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) prev_object->notify.next[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) acpi_ut_update_ref_count(prev_object,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) action);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) prev_object = next_object;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) case ACPI_TYPE_PACKAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) * We must update all the sub-objects of the package,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) * each of whom may have their own sub-objects.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) for (i = 0; i < object->package.count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * Null package elements are legal and can be simply
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) * ignored.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) next_object = object->package.elements[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (!next_object) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) switch (next_object->common.type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) case ACPI_TYPE_INTEGER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) case ACPI_TYPE_STRING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) case ACPI_TYPE_BUFFER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) * For these very simple sub-objects, we can just
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * update the reference count here and continue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) * Greatly increases performance of this operation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) acpi_ut_update_ref_count(next_object,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) action);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) * For complex sub-objects, push them onto the stack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) * for later processing (this eliminates recursion.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) acpi_ut_create_update_state_and_push
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) (next_object, action, &state_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) goto error_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) next_object = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) case ACPI_TYPE_BUFFER_FIELD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) next_object = object->buffer_field.buffer_obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) case ACPI_TYPE_LOCAL_BANK_FIELD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) next_object = object->bank_field.bank_obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) acpi_ut_create_update_state_and_push(object->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) bank_field.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) region_obj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) action,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) &state_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) goto error_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) case ACPI_TYPE_LOCAL_INDEX_FIELD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) next_object = object->index_field.index_obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) acpi_ut_create_update_state_and_push(object->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) index_field.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) data_obj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) action,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) &state_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) goto error_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) case ACPI_TYPE_LOCAL_REFERENCE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) * The target of an Index (a package, string, or buffer) or a named
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) * reference must track changes to the ref count of the index or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) * target object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) if ((object->reference.class == ACPI_REFCLASS_INDEX) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) (object->reference.class == ACPI_REFCLASS_NAME)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) next_object = object->reference.object;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) case ACPI_TYPE_LOCAL_REGION_FIELD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) case ACPI_TYPE_REGION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) break; /* No subobjects for all other types */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) * Now we can update the count in the main object. This can only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) * happen after we update the sub-objects in case this causes the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) * main object to be deleted.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) acpi_ut_update_ref_count(object, action);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) object = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) /* Move on to the next object to be updated */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) if (next_object) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) object = next_object;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) next_object = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) } else if (state_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) state = acpi_ut_pop_generic_state(&state_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) object = state->update.object;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) acpi_ut_delete_generic_state(state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) return (AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) error_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) ACPI_EXCEPTION((AE_INFO, status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) "Could not update object reference count"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) /* Free any stacked Update State objects */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) while (state_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) state = acpi_ut_pop_generic_state(&state_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) acpi_ut_delete_generic_state(state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) return (status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) * FUNCTION: acpi_ut_add_reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) * PARAMETERS: object - Object whose reference count is to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) * incremented
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) * RETURN: None
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) * DESCRIPTION: Add one reference to an ACPI object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) void acpi_ut_add_reference(union acpi_operand_object *object)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) ACPI_FUNCTION_NAME(ut_add_reference);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) /* Ensure that we have a valid object */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) if (!acpi_ut_valid_internal_object(object)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) "Obj %p Current Refs=%X [To Be Incremented]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) object, object->common.reference_count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) /* Increment the reference count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) (void)acpi_ut_update_object_reference(object, REF_INCREMENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) * FUNCTION: acpi_ut_remove_reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) * PARAMETERS: object - Object whose ref count will be decremented
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) * RETURN: None
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) * DESCRIPTION: Decrement the reference count of an ACPI internal object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) void acpi_ut_remove_reference(union acpi_operand_object *object)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) ACPI_FUNCTION_NAME(ut_remove_reference);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) * Allow a NULL pointer to be passed in, just ignore it. This saves
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) * each caller from having to check. Also, ignore NS nodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) if (!object ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) /* Ensure that we have a valid object */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) if (!acpi_ut_valid_internal_object(object)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) ACPI_DEBUG_PRINT_RAW((ACPI_DB_ALLOCATIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) "%s: Obj %p Current Refs=%X [To Be Decremented]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) ACPI_GET_FUNCTION_NAME, object,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) object->common.reference_count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) * Decrement the reference count, and only actually delete the object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) * if the reference count becomes 0. (Must also decrement the ref count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) * of all subobjects!)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) (void)acpi_ut_update_object_reference(object, REF_DECREMENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags