diff options
| author | Huisong Li <lihuisong@huawei.com> | 2025-11-25 09:47:02 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2026-01-14 19:46:42 +0300 |
| commit | 9be35201579c8b96071cc49bfd382a0036de1d87 (patch) | |
| tree | 255432a1936bf53f8cf0938e2e4662dd95d654a0 | |
| parent | f132e089fe89cadc2098991f0a3cb05c3f824ac6 (diff) | |
| download | linux-9be35201579c8b96071cc49bfd382a0036de1d87.tar.xz | |
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: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Jonathan 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: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/acpi/processor_idle.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 4ba45440d4c4..f3a73c99f450 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -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; } |