Commit d6b88ce2 authored by Richard Gong's avatar Richard Gong Committed by Rafael J. Wysocki
Browse files

ACPI: processor idle: Allow playing dead in C3 state 

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: default avatarMario Limonciello <mario.limonciello@amd.com>
Signed-off-by: default avatarRichard Gong <richard.gong@amd.com>
[ rjw: Fixed coding style ]
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent e4e737bb

drivers/acpi/processor_idle.c

+2 −1
Original line number Diff line number Diff line
@@ -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;

		}