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-rw-r--r--drivers/acpi/utilities/utcopy.c19
-rw-r--r--drivers/acpi/utilities/utglobal.c4
-rw-r--r--drivers/acpi/utilities/utmisc.c34
-rw-r--r--drivers/acpi/utilities/utresrc.c19
4 files changed, 49 insertions, 27 deletions
diff --git a/drivers/acpi/utilities/utcopy.c b/drivers/acpi/utilities/utcopy.c
index 5442b32de61..568df9e42f8 100644
--- a/drivers/acpi/utilities/utcopy.c
+++ b/drivers/acpi/utilities/utcopy.c
@@ -398,14 +398,17 @@ acpi_ut_copy_iobject_to_eobject(union acpi_operand_object *internal_object,
* Build a simple object (no nested objects)
*/
status = acpi_ut_copy_isimple_to_esimple(internal_object,
- (union acpi_object *)
- ret_buffer->pointer,
- ((u8 *) ret_buffer->
- pointer +
- ACPI_ROUND_UP_TO_NATIVE_WORD
- (sizeof
- (union
- acpi_object))),
+ ACPI_CAST_PTR(union
+ acpi_object,
+ ret_buffer->
+ pointer),
+ ACPI_ADD_PTR(u8,
+ ret_buffer->
+ pointer,
+ ACPI_ROUND_UP_TO_NATIVE_WORD
+ (sizeof
+ (union
+ acpi_object))),
&ret_buffer->length);
/*
* build simple does not include the object size in the length
diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index 413e1dd8ae3..d6813d88a10 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -638,7 +638,7 @@ char *acpi_ut_get_node_name(void *object)
/* Name must be a valid ACPI name */
- if (!acpi_ut_valid_acpi_name(*(u32 *) node->name.ascii)) {
+ if (!acpi_ut_valid_acpi_name(node->name.integer)) {
return ("????");
}
@@ -831,6 +831,7 @@ void acpi_ut_init_globals(void)
acpi_gbl_ps_find_count = 0;
acpi_gbl_acpi_hardware_present = TRUE;
acpi_gbl_owner_id_mask = 0;
+ acpi_gbl_last_owner_id = 0;
acpi_gbl_trace_method_name = 0;
acpi_gbl_trace_dbg_level = 0;
acpi_gbl_trace_dbg_layer = 0;
@@ -845,7 +846,6 @@ void acpi_ut_init_globals(void)
/* Namespace */
acpi_gbl_root_node = NULL;
-
acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
acpi_gbl_root_node_struct.descriptor = ACPI_DESC_TYPE_NAMED;
acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c
index 2a9110c0639..89efba7bf44 100644
--- a/drivers/acpi/utilities/utmisc.c
+++ b/drivers/acpi/utilities/utmisc.c
@@ -63,6 +63,7 @@ ACPI_MODULE_NAME("utmisc")
acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id)
{
acpi_native_uint i;
+ acpi_native_uint j;
acpi_status status;
ACPI_FUNCTION_TRACE("ut_allocate_owner_id");
@@ -82,29 +83,46 @@ acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id)
return_ACPI_STATUS(status);
}
- /* Find a free owner ID */
+ /*
+ * Find a free owner ID, cycle through all possible IDs on repeated
+ * allocations. Note: Index for next possible ID is equal to the value
+ * of the last allocated ID.
+ */
+ for (i = 0, j = acpi_gbl_last_owner_id; i < 32; i++, j++) {
+ if (j >= 32) {
+ j = 0; /* Wraparound to ID start */
+ }
+
+ if (!(acpi_gbl_owner_id_mask & (1 << j))) {
+ /*
+ * Found a free ID. The actual ID is the bit index plus one,
+ * making zero an invalid Owner ID. Save this as the last ID
+ * allocated and update the global ID mask.
+ */
+ acpi_gbl_last_owner_id = (acpi_owner_id) (j + 1);
+ *owner_id = acpi_gbl_last_owner_id;
- for (i = 0; i < 32; i++) {
- if (!(acpi_gbl_owner_id_mask & (1 << i))) {
ACPI_DEBUG_PRINT((ACPI_DB_VALUES,
"Current owner_id mask: %8.8X New ID: %2.2X\n",
acpi_gbl_owner_id_mask,
- (unsigned int)(i + 1)));
+ (unsigned int)
+ acpi_gbl_last_owner_id));
- acpi_gbl_owner_id_mask |= (1 << i);
- *owner_id = (acpi_owner_id) (i + 1);
+ acpi_gbl_owner_id_mask |= (1 << j);
goto exit;
}
}
/*
- * If we are here, all owner_ids have been allocated. This probably should
+ * All owner_ids have been allocated. This typically should
* not happen since the IDs are reused after deallocation. The IDs are
* allocated upon table load (one per table) and method execution, and
* they are released when a table is unloaded or a method completes
* execution.
+ *
+ * If this error happens, there may be very deep nesting of invoked control
+ * methods, or there may be a bug where the IDs are not released.
*/
- *owner_id = 0;
status = AE_OWNER_ID_LIMIT;
ACPI_REPORT_ERROR(("Could not allocate new owner_id (32 max), AE_OWNER_ID_LIMIT\n"));
diff --git a/drivers/acpi/utilities/utresrc.c b/drivers/acpi/utilities/utresrc.c
index 07a314c710d..6c0ce7b1219 100644
--- a/drivers/acpi/utilities/utresrc.c
+++ b/drivers/acpi/utilities/utresrc.c
@@ -157,7 +157,7 @@ acpi_status acpi_ut_validate_resource(void *aml, u8 * return_index)
/*
* 1) Validate the resource_type field (Byte 0)
*/
- resource_type = *((u8 *) aml);
+ resource_type = ACPI_GET8(aml);
/*
* Byte 0 contains the descriptor name (Resource Type)
@@ -266,14 +266,14 @@ u8 acpi_ut_get_resource_type(void *aml)
* Byte 0 contains the descriptor name (Resource Type)
* Examine the large/small bit in the resource header
*/
- if (*((u8 *) aml) & ACPI_RESOURCE_NAME_LARGE) {
+ if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
/* Large Resource Type -- bits 6:0 contain the name */
- return (*((u8 *) aml));
+ return (ACPI_GET8(aml));
} else {
/* Small Resource Type -- bits 6:3 contain the name */
- return ((u8) (*((u8 *) aml) & ACPI_RESOURCE_NAME_SMALL_MASK));
+ return ((u8) (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_SMALL_MASK));
}
}
@@ -301,15 +301,15 @@ u16 acpi_ut_get_resource_length(void *aml)
* Byte 0 contains the descriptor name (Resource Type)
* Examine the large/small bit in the resource header
*/
- if (*((u8 *) aml) & ACPI_RESOURCE_NAME_LARGE) {
+ if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
/* Large Resource type -- bytes 1-2 contain the 16-bit length */
- ACPI_MOVE_16_TO_16(&resource_length, &((u8 *) aml)[1]);
+ ACPI_MOVE_16_TO_16(&resource_length, ACPI_ADD_PTR(u8, aml, 1));
} else {
/* Small Resource type -- bits 2:0 of byte 0 contain the length */
- resource_length = (u16) (*((u8 *) aml) &
+ resource_length = (u16) (ACPI_GET8(aml) &
ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK);
}
@@ -334,7 +334,7 @@ u8 acpi_ut_get_resource_header_length(void *aml)
/* Examine the large/small bit in the resource header */
- if (*((u8 *) aml) & ACPI_RESOURCE_NAME_LARGE) {
+ if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
return (sizeof(struct aml_resource_large_header));
} else {
return (sizeof(struct aml_resource_small_header));
@@ -372,8 +372,9 @@ u32 acpi_ut_get_descriptor_length(void *aml)
* FUNCTION: acpi_ut_get_resource_end_tag
*
* PARAMETERS: obj_desc - The resource template buffer object
+ * end_tag - Where the pointer to the end_tag is returned
*
- * RETURN: Pointer to the end tag
+ * RETURN: Status, pointer to the end tag
*
* DESCRIPTION: Find the end_tag resource descriptor in an AML resource template
*
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-24 10:05:21 +0000