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| author | Lin Ming <ming.m.lin@intel.com> | 2010-04-01 10:47:56 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-04-20 10:43:16 -0400 |
| commit | 729df0f848daf2f17d02107199fa92efe909d995 (patch) | |
| tree | d4ece34a277019368999fd36a0bf15a39eeaa742 /drivers/acpi/acpica/psxface.c | |
| parent | c1637e9c649a0eb72c467041d78275aabdd48a41 (diff) | |
| download | linux-729df0f848daf2f17d02107199fa92efe909d995.tar.gz | |
ACPICA: Add detection of corrupted/replaced DSDT
This change adds support to detect a DSDT that has been corrupted and/or replaced from outside the OS (by firmware). This is typically catastrophic for the system, but has been seen on some machines. 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/psxface.c')
| -rw-r--r-- | drivers/acpi/acpica/psxface.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/psxface.c b/drivers/acpi/acpica/psxface.c index 6064dd4e94c2..67e7ad517051 100644 --- a/drivers/acpi/acpica/psxface.c +++ b/drivers/acpi/acpica/psxface.c @@ -220,6 +220,10 @@ acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info) ACPI_FUNCTION_TRACE(ps_execute_method); + /* Quick validation of DSDT header */ + + acpi_tb_check_dsdt_header(); + /* Validate the Info and method Node */ if (!info || !info->resolved_node) { |