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linux-2.6
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Pull bugzilla-6859 into release branch

This commit is contained in:
Len Brown 2007-03-09 23:18:35 -05:00
parent 63be2d9305 2f894ef9c8
commit 3dfb737998
1 changed files with 23 additions and 2 deletions
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25
drivers/acpi/resources/rscreate.c
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@ -191,6 +191,9 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer);
for (index = 0; index < number_of_elements; index++) {
int source_name_index = 2;
int source_index_index = 3;
/*
* Point user_prt past this current structure
*
@ -260,11 +263,29 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
return_ACPI_STATUS(AE_BAD_DATA);
}
/*
* If BIOS erroneously reversed the _PRT source_name and source_index,
* then reverse them back.
*/
if (ACPI_GET_OBJECT_TYPE (sub_object_list[3]) != ACPI_TYPE_INTEGER) {
if (acpi_gbl_enable_interpreter_slack) {
source_name_index = 3;
source_index_index = 2;
printk(KERN_WARNING "ACPI: Handling Garbled _PRT entry\n");
} else {
ACPI_ERROR((AE_INFO,
"(PRT[%X].source_index) Need Integer, found %s",
index,
acpi_ut_get_object_type_name(sub_object_list[3])));
return_ACPI_STATUS(AE_BAD_DATA);
}
}
/*
* 3) Third subobject: Dereference the PRT.source_name
* The name may be unresolved (slack mode), so allow a null object
*/
obj_desc = sub_object_list[2];
obj_desc = sub_object_list[source_name_index];
if (obj_desc) {
switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
case ACPI_TYPE_LOCAL_REFERENCE:
@ -339,7 +360,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
/* 4) Fourth subobject: Dereference the PRT.source_index */
obj_desc = sub_object_list[3];
obj_desc = sub_object_list[source_index_index];
if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) {
user_prt->source_index = (u32) obj_desc->integer.value;
} else {