[PATCH v2 1/7] ACPI: processor: idle: Mark the state as invalid if its entry method is illegal

[Huisong Li]

According to ACPI spec, entry method in LPI sub-package must be buffer
or integer. And the entry method is very key in cpuidle. So mark the state
as invalid.

Fixes: a36a7fecfe60 ("ACPI / processor_idle: Add support for Low Power Idle(LPI) states")
Signed-off-by: Huisong Li <lihuisong@xxxxxxxxxx>
---
 drivers/acpi/processor_idle.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 341825e8ac63..9f1040eac051 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -956,6 +956,9 @@ static int acpi_processor_evaluate_lpi(acpi_handle handle,
 			lpi_state->entry_method = ACPI_CSTATE_INTEGER;
 			lpi_state->address = obj->integer.value;
 		} else {
+			pr_debug("Entry method of state-%d is illegal, disable it.\n",
+				 state_idx);
+			lpi_state->flags = 0;
 			continue;
 		}
 
-- 
2.33.0