From fbda4b38fa3995aa0777fe9cbbdcb223c6292083 Mon Sep 17 00:00:00 2001 From: Lukas Wunner Date: Wed, 23 Mar 2016 00:11:20 +0100 Subject: [PATCH] ACPI / PM: Runtime resume devices when waking from hibernate Commit 58a1fbbb2ee8 ("PM / PCI / ACPI: Kick devices that might have been reset by firmware") added a runtime resume for devices that were runtime suspended when the system entered suspend-to-RAM. Briefly, the motivation was to ensure that devices did not remain in a reset-power-on state after resume, potentially preventing deep SoC-wide low-power states from being entered on idle. Currently we're not doing the same when leaving suspend-to-disk and this asymmetry is a problem if drivers rely on the automatic resume triggered by pm_complete_with_resume_check(). Fix it. Fixes: 58a1fbbb2ee8 (PM / PCI / ACPI: Kick devices that might have been reset by firmware) Signed-off-by: Lukas Wunner Cc: 4.4+ # 4.4+ Signed-off-by: Rafael J. Wysocki --- drivers/acpi/sleep.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 9cb975200cac..f054cadf30d8 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -714,6 +714,7 @@ static int acpi_hibernation_enter(void) static void acpi_hibernation_leave(void) { + pm_set_resume_via_firmware(); /* * If ACPI is not enabled by the BIOS and the boot kernel, we need to * enable it here. -- 2.39.2