ACPI / PM: Call acpi_save_state_mem() right before low-level suspend
Since acpi_save_state_mem() is only called by acpi_suspend_enter()
if the target sleep state is S3, it's better to call it under the
switch (acpi_state), right before do_suspend_lowlevel().
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 6bea2fe..2307604 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -244,17 +244,10 @@
{
acpi_status status = AE_OK;
u32 acpi_state = acpi_target_sleep_state;
+ int error;
ACPI_FLUSH_CPU_CACHE();
- /* Do arch specific saving of state. */
- if (acpi_state == ACPI_STATE_S3) {
- int error = acpi_save_state_mem();
-
- if (error)
- return error;
- }
-
switch (acpi_state) {
case ACPI_STATE_S1:
barrier();
@@ -262,6 +255,9 @@
break;
case ACPI_STATE_S3:
+ error = acpi_save_state_mem();
+ if (error)
+ return error;
do_suspend_lowlevel();
pr_info(PREFIX "Low-level resume complete\n");
break;