Messages in this thread Patch in this message | | | From | Richard Gong <> | Subject | [PATCHv1] ACPI: processor idle: Allow playing dead in C3 state | Date | Wed, 22 Sep 2021 08:31:16 -0500 |
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When some cores are disabled on AMD platforms, the system will no longer be able to enter suspend-to-idle s0ix.
Update to allow playing dead in C3 state so that the CPUs can enter the deepest state on AMD platforms.
BugLink: https://gitlab.freedesktop.org/drm/amd/-/issues/1708 Suggested-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Richard Gong <richard.gong@amd.com> --- drivers/acpi/processor_idle.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index f37fba9e5ba0..61d5a72d218e 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -789,7 +789,8 @@ static int acpi_processor_setup_cstates(struct acpi_processor *pr) state->enter = acpi_idle_enter; state->flags = 0; - if (cx->type == ACPI_STATE_C1 || cx->type == ACPI_STATE_C2) { + if (cx->type == ACPI_STATE_C1 || cx->type == ACPI_STATE_C2 + || cx->type == ACPI_STATE_C3) { state->enter_dead = acpi_idle_play_dead; drv->safe_state_index = count; } -- 2.25.1
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