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ACPICA: Fix for package reference counts

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Prevents infinite loop of 'Large Reference Count' messages in
aslts-bdemo-b286 test.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore
2008-04-10 19:06:38 +04:00
committed by Len Brown
parent 422f4f90a2
commit 91d02132fe
1 changed files with 22 additions and 0 deletions
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22
drivers/acpi/dispatcher/dsobject.c
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@@ -370,6 +370,8 @@ acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state,
union acpi_operand_object *obj_desc = NULL; union acpi_operand_object *obj_desc = NULL;
acpi_status status = AE_OK; acpi_status status = AE_OK;
acpi_native_uint i; acpi_native_uint i;
u16 index;
u16 reference_count;
ACPI_FUNCTION_TRACE(ds_build_internal_package_obj); ACPI_FUNCTION_TRACE(ds_build_internal_package_obj);
@@ -447,6 +449,26 @@ acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state,
package. package.
elements[i]); elements[i]);
} }
if (*obj_desc_ptr) {
/* Existing package, get existing reference count */
reference_count =
(*obj_desc_ptr)->common.reference_count;
if (reference_count > 1) {
/* Make new element ref count match original ref count */
for (index = 0; index < (reference_count - 1);
index++) {
acpi_ut_add_reference((obj_desc->
package.
elements[i]));
}
}
}
arg = arg->common.next; arg = arg->common.next;
} }