[PATCH] [ACPI] acpi_shutdown: Only prepare for power off onpower_off

[Eric W. Biederman]

When acpi_sleep_prepare was moved into a shutdown method we
started calling it for all shutdowns.  It appears this triggers
some systems to power off on reboot.  Avoid this by only calling
acpi_sleep_prepare if we are going to power off the system.

Signed-off-by: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>


---

 drivers/acpi/sleep/poweroff.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

7194b86c5e67aaf9ce8c25482441e87d700f057d
diff --git a/drivers/acpi/sleep/poweroff.c b/drivers/acpi/sleep/poweroff.c
--- a/drivers/acpi/sleep/poweroff.c
+++ b/drivers/acpi/sleep/poweroff.c
@@ -55,7 +55,11 @@ void acpi_power_off(void)
 
 static int acpi_shutdown(struct sys_device *x)
 {
-	return acpi_sleep_prepare(ACPI_STATE_S5);
+	if (system_state == SYSTEM_POWER_OFF) {
+		/* Prepare if we are going to power off the system */
+		return acpi_sleep_prepare(ACPI_STATE_S5);
+	}
+	return 0;
 }
 
 static struct sysdev_class acpi_sysclass = {
-
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