Powerdown in whatever way the user specified - rebooting being the
overriding option, entering an ACPI state the second choice, doing a simple
power off the third and sitting around in cpu_relax the fallback.
Signed-off-by: Nigel Cunningham <[email protected]>
kernel/power/power_off.c | 28 ++++++++++++++++++++++++++++
1 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/kernel/power/power_off.c b/kernel/power/power_off.c
index 7f7c565..624ab7b 100644
--- a/kernel/power/power_off.c
+++ b/kernel/power/power_off.c
@@ -50,3 +50,31 @@ int try_pm_state_powerdown(void)
return 1;
}
+/*
+ * suspend_power_down
+ * Functionality : Powers down or reboots the computer once the image
+ * has been written to disk.
+ * Key Assumptions : Able to reboot/power down via code called or that
+ * the warning emitted if the calls fail will be visible
+ * to the user (ie printk resumes devices).
+ * Called From : do_suspend2_suspend_2
+ */
+
+void suspend_power_down(void)
+{
+ if (test_action_state(SUSPEND_REBOOT)) {
+ suspend_prepare_status(DONT_CLEAR_BAR, "Ready to reboot.");
+ kernel_restart(NULL);
+ }
+
+ suspend_prepare_status(DONT_CLEAR_BAR, "Powering down.");
+
+ if (pm_ops && pm_ops->enter && suspend_powerdown_method && try_pm_state_powerdown())
+ return;
+
+ kernel_power_off();
+ suspend_prepare_status(DONT_CLEAR_BAR, "Powerdown failed");
+ while (1)
+ cpu_relax();
+}
+
--
Nigel Cunningham nigel at suspend2 dot net
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