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authorLen Brown <len.brown@intel.com>2009-09-19 02:09:37 -0400
committerLen Brown <len.brown@intel.com>2009-09-19 02:09:37 -0400
commitbf25400e889dac3f9a3d5a5b77e8ec4c170a5006 (patch)
tree79d8d35703726b1adbb8b412683b7824e044a9eb /drivers
parent762caf0baafc657c410b9c04f4a95d4e3aa4dda1 (diff)
parenta5fe1a03f7720b8da8364a1737e1e5a357904e99 (diff)
Merge branch 'bugzilla-13620' into release
Diffstat (limited to 'drivers')
-rw-r--r--drivers/acpi/acpica/utdelete.c6
-rw-r--r--drivers/acpi/osl.c94
2 files changed, 97 insertions, 3 deletions
diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c
index bc171031508..96e26e70c63 100644
--- a/drivers/acpi/acpica/utdelete.c
+++ b/drivers/acpi/acpica/utdelete.c
@@ -215,6 +215,12 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Region %p\n", object));
+ /* Invalidate the region address/length via the host OS */
+
+ acpi_os_invalidate_address(object->region.space_id,
+ object->region.address,
+ (acpi_size) object->region.length);
+
second_desc = acpi_ns_get_secondary_object(object);
if (second_desc) {
/*
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 5691f165a95..c5b4f1ed9b7 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -88,6 +88,7 @@ struct acpi_res_list {
char name[5]; /* only can have a length of 4 chars, make use of this
one instead of res->name, no need to kalloc then */
struct list_head resource_list;
+ int count;
};
static LIST_HEAD(resource_list_head);
@@ -1358,6 +1359,89 @@ acpi_os_validate_interface (char *interface)
return AE_SUPPORT;
}
+static inline int acpi_res_list_add(struct acpi_res_list *res)
+{
+ struct acpi_res_list *res_list_elem;
+
+ list_for_each_entry(res_list_elem, &resource_list_head,
+ resource_list) {
+
+ if (res->resource_type == res_list_elem->resource_type &&
+ res->start == res_list_elem->start &&
+ res->end == res_list_elem->end) {
+
+ /*
+ * The Region(addr,len) already exist in the list,
+ * just increase the count
+ */
+
+ res_list_elem->count++;
+ return 0;
+ }
+ }
+
+ res->count = 1;
+ list_add(&res->resource_list, &resource_list_head);
+ return 1;
+}
+
+static inline void acpi_res_list_del(struct acpi_res_list *res)
+{
+ struct acpi_res_list *res_list_elem;
+
+ list_for_each_entry(res_list_elem, &resource_list_head,
+ resource_list) {
+
+ if (res->resource_type == res_list_elem->resource_type &&
+ res->start == res_list_elem->start &&
+ res->end == res_list_elem->end) {
+
+ /*
+ * If the res count is decreased to 0,
+ * remove and free it
+ */
+
+ if (--res_list_elem->count == 0) {
+ list_del(&res_list_elem->resource_list);
+ kfree(res_list_elem);
+ }
+ return;
+ }
+ }
+}
+
+acpi_status
+acpi_os_invalidate_address(
+ u8 space_id,
+ acpi_physical_address address,
+ acpi_size length)
+{
+ struct acpi_res_list res;
+
+ switch (space_id) {
+ case ACPI_ADR_SPACE_SYSTEM_IO:
+ case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+ /* Only interference checks against SystemIO and SytemMemory
+ are needed */
+ res.start = address;
+ res.end = address + length - 1;
+ res.resource_type = space_id;
+ spin_lock(&acpi_res_lock);
+ acpi_res_list_del(&res);
+ spin_unlock(&acpi_res_lock);
+ break;
+ case ACPI_ADR_SPACE_PCI_CONFIG:
+ case ACPI_ADR_SPACE_EC:
+ case ACPI_ADR_SPACE_SMBUS:
+ case ACPI_ADR_SPACE_CMOS:
+ case ACPI_ADR_SPACE_PCI_BAR_TARGET:
+ case ACPI_ADR_SPACE_DATA_TABLE:
+ case ACPI_ADR_SPACE_FIXED_HARDWARE:
+ break;
+ }
+ return AE_OK;
+}
+
/******************************************************************************
*
* FUNCTION: acpi_os_validate_address
@@ -1382,6 +1466,7 @@ acpi_os_validate_address (
char *name)
{
struct acpi_res_list *res;
+ int added;
if (acpi_enforce_resources == ENFORCE_RESOURCES_NO)
return AE_OK;
@@ -1399,14 +1484,17 @@ acpi_os_validate_address (
res->end = address + length - 1;
res->resource_type = space_id;
spin_lock(&acpi_res_lock);
- list_add(&res->resource_list, &resource_list_head);
+ added = acpi_res_list_add(res);
spin_unlock(&acpi_res_lock);
- pr_debug("Added %s resource: start: 0x%llx, end: 0x%llx, "
- "name: %s\n", (space_id == ACPI_ADR_SPACE_SYSTEM_IO)
+ pr_debug("%s %s resource: start: 0x%llx, end: 0x%llx, "
+ "name: %s\n", added ? "Added" : "Already exist",
+ (space_id == ACPI_ADR_SPACE_SYSTEM_IO)
? "SystemIO" : "System Memory",
(unsigned long long)res->start,
(unsigned long long)res->end,
res->name);
+ if (!added)
+ kfree(res);
break;
case ACPI_ADR_SPACE_PCI_CONFIG:
case ACPI_ADR_SPACE_EC: