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path: root/drivers/acpi/sleep.c
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Diffstat (limited to 'drivers/acpi/sleep.c')
-rw-r--r--drivers/acpi/sleep.c43
1 files changed, 25 insertions, 18 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index e52f1238d2d6..8ff08e531443 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* sleep.c - ACPI sleep support.
*
@@ -5,9 +6,6 @@
* Copyright (c) 2004 David Shaohua Li <shaohua.li@intel.com>
* Copyright (c) 2000-2003 Patrick Mochel
* Copyright (c) 2003 Open Source Development Lab
- *
- * This file is released under the GPLv2.
- *
*/
#include <linux/delay.h>
@@ -1132,15 +1130,19 @@ void __init acpi_no_s4_hw_signature(void)
nosigcheck = true;
}
-static int acpi_hibernation_begin(void)
+static int acpi_hibernation_begin(pm_message_t stage)
{
- int error;
+ if (!nvs_nosave) {
+ int error = suspend_nvs_alloc();
+ if (error)
+ return error;
+ }
- error = nvs_nosave ? 0 : suspend_nvs_alloc();
- if (!error)
- acpi_pm_start(ACPI_STATE_S4);
+ if (stage.event == PM_EVENT_HIBERNATE)
+ pm_set_suspend_via_firmware();
- return error;
+ acpi_pm_start(ACPI_STATE_S4);
+ return 0;
}
static int acpi_hibernation_enter(void)
@@ -1200,7 +1202,7 @@ static const struct platform_hibernation_ops acpi_hibernation_ops = {
* function is used if the pre-ACPI 2.0 suspend ordering has been
* requested.
*/
-static int acpi_hibernation_begin_old(void)
+static int acpi_hibernation_begin_old(pm_message_t stage)
{
int error;
/*
@@ -1211,16 +1213,21 @@ static int acpi_hibernation_begin_old(void)
acpi_sleep_tts_switch(ACPI_STATE_S4);
error = acpi_sleep_prepare(ACPI_STATE_S4);
+ if (error)
+ return error;
- if (!error) {
- if (!nvs_nosave)
- error = suspend_nvs_alloc();
- if (!error) {
- acpi_target_sleep_state = ACPI_STATE_S4;
- acpi_scan_lock_acquire();
- }
+ if (!nvs_nosave) {
+ error = suspend_nvs_alloc();
+ if (error)
+ return error;
}
- return error;
+
+ if (stage.event == PM_EVENT_HIBERNATE)
+ pm_set_suspend_via_firmware();
+
+ acpi_target_sleep_state = ACPI_STATE_S4;
+ acpi_scan_lock_acquire();
+ return 0;
}
/*