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| author | Richard Gong <richard.gong@amd.com> | 2021-09-22 16:31:16 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-20 10:34:04 +0300 |
| commit | 7cad1c40ef91729ae4183c98f45f1fc93668dbab (patch) | |
| tree | 0688b011c829e6309057709e8ee2c948f5a2389d /drivers/acpi | |
| parent | 631473adaaef3e2e84999b78be5df000f4b9faf0 (diff) | |
| download | linux-7cad1c40ef91729ae4183c98f45f1fc93668dbab.tar.xz | |
ACPI: processor idle: Allow playing dead in C3 state
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>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 3e369d018400..ef6762a7cdf7 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; } |