[SPARC64]: Use orderly_poweroff().

Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/ds.c

@@ -13,11 +13,11 @@
 #include <linux/delay.h>
 #include <linux/mutex.h>
 #include <linux/kthread.h>
+#include <linux/reboot.h>
 #include <linux/cpu.h>
 
 #include <asm/ldc.h>
 #include <asm/vio.h>
-#include <asm/power.h>
 #include <asm/mdesc.h>
 #include <asm/head.h>
 #include <asm/irq.h>
@@ -328,7 +328,7 @@ static void domain_shutdown_data(struct ldc_channel *lp,
 
 	ds_send(lp, &pkt, sizeof(pkt));
 
-	wake_up_powerd();
+	orderly_poweroff(true);
 }
 
 struct ds_panic_req {
@@ -1133,8 +1133,6 @@ static int __devinit ds_probe(struct vio_dev *vdev,
 
 	ds_info = dp;
 
-	start_powerd();
-
 	return err;
 
 out_free_ldc:

arch/sparc64/kernel/power.c

@@ -12,13 +12,13 @@
 #include <linux/interrupt.h>
 #include <linux/pm.h>
 #include <linux/syscalls.h>
+#include <linux/reboot.h>
 
 #include <asm/system.h>
 #include <asm/auxio.h>
 #include <asm/prom.h>
 #include <asm/of_device.h>
 #include <asm/io.h>
-#include <asm/power.h>
 #include <asm/sstate.h>
 
 #include <linux/unistd.h>
@@ -31,20 +31,9 @@ int scons_pwroff = 1;
 
 static void __iomem *power_reg;
 
-static DECLARE_WAIT_QUEUE_HEAD(powerd_wait);
-static int button_pressed;
-
-void wake_up_powerd(void)
-{
-	if (button_pressed == 0) {
-		button_pressed = 1;
-		wake_up(&powerd_wait);
-	}
-}
-
 static irqreturn_t power_handler(int irq, void *dev_id)
 {
-	wake_up_powerd();
+	orderly_poweroff(true);
 
 	/* FIXME: Check registers for status... */
 	return IRQ_HANDLED;
@@ -77,48 +66,6 @@ void machine_power_off(void)
 void (*pm_power_off)(void) = machine_power_off;
 EXPORT_SYMBOL(pm_power_off);
 
-static int powerd(void *__unused)
-{
-	static char *envp[] = { "HOME=/", "TERM=linux", "PATH=/sbin:/usr/sbin:/bin:/usr/bin", NULL };
-	char *argv[] = { "/sbin/shutdown", "-h", "now", NULL };
-	DECLARE_WAITQUEUE(wait, current);
-
-	daemonize("powerd");
-
-	add_wait_queue(&powerd_wait, &wait);
-
-	for (;;) {
-		set_task_state(current, TASK_INTERRUPTIBLE);
-		if (button_pressed)
-			break;
-		flush_signals(current);
-		schedule();
-	}
-	__set_current_state(TASK_RUNNING);
-	remove_wait_queue(&powerd_wait, &wait);
-
-	/* Ok, down we go... */
-	button_pressed = 0;
-	if (kernel_execve("/sbin/shutdown", argv, envp) < 0) {
-		printk(KERN_ERR "powerd: shutdown execution failed\n");
-		machine_power_off();
-	}
-	return 0;
-}
-
-int start_powerd(void)
-{
-	int err;
-
-	err = kernel_thread(powerd, NULL, CLONE_FS);
-	if (err < 0)
-		printk(KERN_ERR "power: Failed to start power daemon.\n");
-	else
-		printk(KERN_INFO "power: powerd running.\n");
-
-	return err;
-}
-
 static int __init has_button_interrupt(unsigned int irq, struct device_node *dp)
 {
 	if (irq == 0xffffffff)
@@ -142,9 +89,6 @@ static int __devinit power_probe(struct of_device *op, const struct of_device_id
 	poweroff_method = machine_halt;  /* able to use the standard halt */
 
 	if (has_button_interrupt(irq, op->node)) {
-		if (start_powerd() < 0)
-			return 0;
-
 		if (request_irq(irq,
 				power_handler, 0, "power", NULL) < 0)
 			printk(KERN_ERR "power: Cannot setup IRQ handler.\n");