forked from luck/tmp_suning_uos_patched
6400b5a0f6
With earlier commits, the API no longer discards the const-ness of the sysrq_key_op. As such we can add the notation. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jslaby@suse.com> Cc: linux-kernel@vger.kernel.org Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Len Brown <len.brown@intel.com> Cc: linux-pm@vger.kernel.org Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com> Link: https://lore.kernel.org/r/20200513214351.2138580-10-emil.l.velikov@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
46 lines
992 B
C
46 lines
992 B
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* poweroff.c - sysrq handler to gracefully power down machine.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/sysrq.h>
|
|
#include <linux/init.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/reboot.h>
|
|
#include <linux/cpumask.h>
|
|
|
|
/*
|
|
* When the user hits Sys-Rq o to power down the machine this is the
|
|
* callback we use.
|
|
*/
|
|
|
|
static void do_poweroff(struct work_struct *dummy)
|
|
{
|
|
kernel_power_off();
|
|
}
|
|
|
|
static DECLARE_WORK(poweroff_work, do_poweroff);
|
|
|
|
static void handle_poweroff(int key)
|
|
{
|
|
/* run sysrq poweroff on boot cpu */
|
|
schedule_work_on(cpumask_first(cpu_online_mask), &poweroff_work);
|
|
}
|
|
|
|
static const struct sysrq_key_op sysrq_poweroff_op = {
|
|
.handler = handle_poweroff,
|
|
.help_msg = "poweroff(o)",
|
|
.action_msg = "Power Off",
|
|
.enable_mask = SYSRQ_ENABLE_BOOT,
|
|
};
|
|
|
|
static int __init pm_sysrq_init(void)
|
|
{
|
|
register_sysrq_key('o', &sysrq_poweroff_op);
|
|
return 0;
|
|
}
|
|
|
|
subsys_initcall(pm_sysrq_init);
|