From: Richard Gong richard.gong@amd.com
commit d6b88ce2eb9d2698eb24451eb92c0a1649b17bb1 upstream.
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 [ rjw: Fixed coding style ] Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/acpi/processor_idle.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -789,7 +789,8 @@ static int acpi_processor_setup_cstates( 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; }