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ACPICA: Add auto-serialization support for ill-behaved control methods.

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This change adds support to automatically mark a control method as
"serialized" if the method creates any named objects. This will
positively prevent the method from being entered by more than one
thread and thus preventing a possible abort when an attempt is
made to create an object twice.

Implemented by parsing all non-serialize control methods at table
load time.

This feature is disabled by default and this patch also adds a new
Linux kernel parameter "acpi_auto_serialize" to allow this feature
to be turned on for a specific boot.

References: https://bugzilla.kernel.org/show_bug.cgi?id=52191
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Bob Moore
2014-03-24 14:49:00 +08:00
committed by Rafael J. Wysocki
parent e2b8ddcc6b
commit 22b5afce6a
13 changed files with 252 additions and 25 deletions
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7
drivers/acpi/acpica/psobject.c
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@@ -219,7 +219,10 @@ acpi_ps_build_named_op(struct acpi_walk_state *walk_state,
status = walk_state->descending_callback(walk_state, op);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "During name lookup/catalog"));
if (status != AE_CTRL_TERMINATE) {
ACPI_EXCEPTION((AE_INFO, status,
"During name lookup/catalog"));
}
return_ACPI_STATUS(status);
}
@@ -230,7 +233,7 @@ acpi_ps_build_named_op(struct acpi_walk_state *walk_state,
status = acpi_ps_next_parse_state(walk_state, *op, status);
if (ACPI_FAILURE(status)) {
if (status == AE_CTRL_PENDING) {
return_ACPI_STATUS(AE_CTRL_PARSE_PENDING);
status = AE_CTRL_PARSE_PENDING;
}
return_ACPI_STATUS(status);
}