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authorLin Ming <ming.m.lin@intel.com>2009-08-13 10:43:27 +0800
committerLen Brown <len.brown@intel.com>2009-08-27 13:10:35 -0400
commita5fe1a03f7720b8da8364a1737e1e5a357904e99 (patch)
tree2b84668217bc55d8a3bb98d053e92ff93b34dd36 /include/acpi
parent422bef879e84104fee6dc68ded0e371dbeb5f88e (diff)
downloadop-kernel-dev-a5fe1a03f7720b8da8364a1737e1e5a357904e99.zip
op-kernel-dev-a5fe1a03f7720b8da8364a1737e1e5a357904e99.tar.gz
ACPICA: fix leak of acpi_os_validate_address
http://bugzilla.kernel.org/show_bug.cgi?id=13620 If the dynamic region is created and added to resource list over and over again, it has the potential to be a memory leak by growing the list every time. This patch fixes the memory leak, as below 1) add a new field "count" to struct acpi_res_list. When inserting, if the region(addr, len) is already in the resource list, we just increase "count", otherwise, the region is inserted with count=1. When deleting, the "count" is decreased, if it's decreased to 0, the region is deleted from the resource list. With "count", the region with same address and length can only be inserted to the resource list once, so prevent potential memory leak. 2) add a new function acpi_os_invalidate_address, which is called when region is deleted. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acpiosxf.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index ab0b85c..eb0e718 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -245,6 +245,9 @@ acpi_status acpi_osi_invalidate(char* interface);
acpi_status
acpi_os_validate_address(u8 space_id, acpi_physical_address address,
acpi_size length, char *name);
+acpi_status
+acpi_os_invalidate_address(u8 space_id, acpi_physical_address address,
+ acpi_size length);
u64 acpi_os_get_timer(void);
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