From d60cd06331a3566d3305b3c7b566e79edf4e2095 Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Fri, 30 Oct 2020 15:06:57 +0800 Subject: [PATCH] PM: ACPI: reboot: Use S5 for reboot After reboot, it's not possible to use hotkeys to enter BIOS setup and boot menu on some HP laptops. BIOS folks identified the root cause is the missing _PTS call, and BIOS is expecting _PTS to do proper reset. Using S5 for reboot is default behavior under Windows, "A full shutdown (S5) occurs when a system restart is requested" [1], so let's do the same here. [1] https://docs.microsoft.com/en-us/windows/win32/power/system-power-states Signed-off-by: Kai-Heng Feng [ rjw: Subject edit ] Signed-off-by: Rafael J. Wysocki --- kernel/reboot.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/reboot.c b/kernel/reboot.c index e7b78d5ae1ab..7e5aa1f78693 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -244,6 +244,8 @@ void migrate_to_reboot_cpu(void) void kernel_restart(char *cmd) { kernel_restart_prepare(cmd); + if (pm_power_off_prepare) + pm_power_off_prepare(); migrate_to_reboot_cpu(); syscore_shutdown(); if (!cmd)