[PATCH] aic7xxx_osm build fix
[cris-mirror.git] / kernel / power / poweroff.c
blob715081b2d8290acd08aae0ca32059d698e8c0882
1 /*
2 * poweroff.c - sysrq handler to gracefully power down machine.
4 * This file is released under the GPL v2
5 */
7 #include <linux/kernel.h>
8 #include <linux/sysrq.h>
9 #include <linux/init.h>
10 #include <linux/pm.h>
11 #include <linux/workqueue.h>
14 * When the user hits Sys-Rq o to power down the machine this is the
15 * callback we use.
18 static void do_poweroff(void *dummy)
20 if (pm_power_off)
21 pm_power_off();
24 static DECLARE_WORK(poweroff_work, do_poweroff, NULL);
26 static void handle_poweroff(int key, struct pt_regs *pt_regs,
27 struct tty_struct *tty)
29 schedule_work(&poweroff_work);
32 static struct sysrq_key_op sysrq_poweroff_op = {
33 .handler = handle_poweroff,
34 .help_msg = "powerOff",
35 .action_msg = "Power Off",
36 .enable_mask = SYSRQ_ENABLE_BOOT,
39 static int pm_sysrq_init(void)
41 register_sysrq_key('o', &sysrq_poweroff_op);
42 return 0;
45 subsys_initcall(pm_sysrq_init);