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authorLin Ming <ming.m.lin@intel.com>2010-04-01 07:14:12 +0400
committerLen Brown <len.brown@intel.com>2010-04-20 18:43:16 +0400
commit69ec87efa815d69140423014bb5f91e034faac22 (patch)
tree4619ef009c68e1061c41e6081b7967da67974970 /drivers/acpi/acpica/tbxface.c
parent729df0f848daf2f17d02107199fa92efe909d995 (diff)
downloadlinux-69ec87efa815d69140423014bb5f91e034faac22.tar.xz
ACPICA: Add subsystem option to force copy of DSDT to local memory
Optionally copy the entire DSDT to local memory (instead of simply mapping it.) There are some BIOSs that corrupt or replace the original DSDT, creating the need for this option. Default is FALSE, do not copy the DSDT. https://bugzilla.kernel.org/show_bug.cgi?id=14679 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/tbxface.c')
-rw-r--r--drivers/acpi/acpica/tbxface.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
index 30565100b94c..f5378fc302b3 100644
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -532,6 +532,16 @@ static acpi_status acpi_tb_load_namespace(void)
}
/*
+ * Optionally copy the entire DSDT to local memory (instead of simply
+ * mapping it.) There are some BIOSs that corrupt or replace the original
+ * DSDT, creating the need for this option. Default is FALSE, do not copy
+ * the DSDT.
+ */
+ if (acpi_gbl_copy_dsdt_locally) {
+ acpi_tb_copy_dsdt(acpi_gbl_DSDT);
+ }
+
+ /*
* Save the original DSDT header for detection of table corruption
* and/or replacement of the DSDT from outside the OS.
*/