Commit 9be35201 authored by Huisong Li's avatar Huisong Li Committed by Rafael J. Wysocki
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ACPI: processor: idle: Add debug log for states with invalid entry methods 



According to ACPI spec, entry method in LPI sub-package must be a
buffer or an integer.

The driver will disable the state whose the entry method is invalid
by zeroing flags in struct acpi_lpi_state.

The entry method is very key in cpuidle. A debug log is very useful
for developers.

Signed-off-by: default avatarHuisong Li <lihuisong@huawei.com>
Reviewed-by: default avatarJonathan Cameron <jonathan.cameron@huawei.com>
[ rjw: Subject and changelog edits, changed "illegal" to "invalid" ]
Link: https://patch.msgid.link/20251125064702.3666149-1-lihuisong@huawei.com


Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent f132e089

drivers/acpi/processor_idle.c

+2 −0
Original line number Diff line number Diff line
@@ -946,6 +946,8 @@ 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 invalid, disable it.\n",

				 state_idx);

			continue;

		}