From: Eric W. Biederman <ebiederm@xmission.com>

This starts the sparc64 powerd using kthread_run instead of kernel_thread
and daemonize.  Making the code slightly simpler and more maintainable.

In addition the unnecessary flush_signals is removed.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/sparc64/kernel/power.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff -puN arch/sparc64/kernel/power.c~sparc64-powerc-convert-to-use-the-kthread-api arch/sparc64/kernel/power.c
--- a/arch/sparc64/kernel/power.c~sparc64-powerc-convert-to-use-the-kthread-api
+++ a/arch/sparc64/kernel/power.c
@@ -13,6 +13,7 @@
 #include <linux/interrupt.h>
 #include <linux/pm.h>
 #include <linux/syscalls.h>
+#include <linux/kthread.h>
 
 #include <asm/system.h>
 #include <asm/auxio.h>
@@ -81,15 +82,12 @@ static int powerd(void *__unused)
 	char *argv[] = { "/sbin/shutdown", "-h", "now", NULL };
 	DECLARE_WAITQUEUE(wait, current);
 
-	daemonize("powerd");
-
 	add_wait_queue(&powerd_wait, &wait);
 again:
 	for (;;) {
 		set_task_state(current, TASK_INTERRUPTIBLE);
 		if (button_pressed)
 			break;
-		flush_signals(current);
 		schedule();
 	}
 	__set_current_state(TASK_RUNNING);
@@ -128,7 +126,9 @@ static int __devinit power_probe(struct 
 	poweroff_method = machine_halt;  /* able to use the standard halt */
 
 	if (has_button_interrupt(irq, op->node)) {
-		if (kernel_thread(powerd, NULL, CLONE_FS) < 0) {
+		struct task_struct *task;
+		task = kthread_run(powerd, NULL, "powerd");
+		if (IS_ERR(task)) {
 			printk("Failed to start power daemon.\n");
 			return 0;
 		}
_