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path: root/drivers/acpi/events/evxfregn.c
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Diffstat (limited to 'drivers/acpi/events/evxfregn.c')
-rw-r--r--drivers/acpi/events/evxfregn.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/acpi/events/evxfregn.c b/drivers/acpi/events/evxfregn.c
index e8b86a0..83b12a9 100644
--- a/drivers/acpi/events/evxfregn.c
+++ b/drivers/acpi/events/evxfregn.c
@@ -155,7 +155,11 @@ acpi_remove_address_space_handler(acpi_handle device,
/* Convert and validate the device handle */
node = acpi_ns_map_handle_to_node(device);
- if (!node) {
+ if (!node ||
+ ((node->type != ACPI_TYPE_DEVICE) &&
+ (node->type != ACPI_TYPE_PROCESSOR) &&
+ (node->type != ACPI_TYPE_THERMAL) &&
+ (node != acpi_gbl_root_node))) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
@@ -178,6 +182,13 @@ acpi_remove_address_space_handler(acpi_handle device,
if (handler_obj->address_space.space_id == space_id) {
+ /* Handler must be the same as the installed handler */
+
+ if (handler_obj->address_space.handler != handler) {
+ status = AE_BAD_PARAMETER;
+ goto unlock_and_exit;
+ }
+
/* Matched space_id, first dereference this in the Regions */
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
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