[V2][PATCH 1/2] acpi: method: _PRS is not mandatory method

[Heyi Guo]

According to ACPI 5.1 spec, section 6.2.12, "specify a _PRS for all the configurable devices. Static (non-configurable) devices do not specify a _PRS object." So the existance of _PRS method depends on the type of devices, and may be unavailable in some systems.

Signed-off-by: Heyi Guo <heyi.guo at linaro.org>
---
 src/acpi/method/method.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/acpi/method/method.c b/src/acpi/method/method.c
index e84bd58..cc1ed33 100644
--- a/src/acpi/method/method.c
+++ b/src/acpi/method/method.c
@@ -2096,7 +2096,7 @@ static int method_test_CRS(fwts_framework *fw)
 static int method_test_PRS(fwts_framework *fw)
 {
 	/* Re-use the _CRS checking on the returned buffer */
-	return method_evaluate_method(fw, METHOD_MANDITORY,
+	return method_evaluate_method(fw, METHOD_OPTIONAL,
 		"_PRS", NULL, 0, method_test_CRS_return, "_PRS");
 }
 
-- 
2.1.4