From 58e2ef5ad35dc13032fdb30357001811ad44ba8c Mon Sep 17 00:00:00 2001 From: Yazen Ghannam Date: Wed, 18 Dec 2019 11:33:05 -0500 Subject: [PATCH] ACPI / processor: Set P_LVL{2,3} idle state descriptions commit 34a62cd0df89dd7034165048c0921d1314191b66 upstream. The ACPI idle driver will fallback to using the legacy P_LVL* SystemIO method of entering C-states if the _CST method is disabled and P_BLK is defined. However, in this case the C2 and C3 states won't have a description set, so the user will see "" when reading the description from sysfs. Give each of these states a description. Signed-off-by: Yazen Ghannam Signed-off-by: Rafael J. Wysocki Signed-off-by: WANG Siyuan Acked-by: Caspar Zhang --- drivers/acpi/processor_idle.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index abb559cd28d7..875d3b6d58e3 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -281,6 +281,13 @@ static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr) pr->power.states[ACPI_STATE_C2].address, pr->power.states[ACPI_STATE_C3].address)); + snprintf(pr->power.states[ACPI_STATE_C2].desc, + ACPI_CX_DESC_LEN, "ACPI P_LVL2 IOPORT 0x%x", + pr->power.states[ACPI_STATE_C2].address); + snprintf(pr->power.states[ACPI_STATE_C3].desc, + ACPI_CX_DESC_LEN, "ACPI P_LVL3 IOPORT 0x%x", + pr->power.states[ACPI_STATE_C3].address); + return 0; } -- GitLab