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

This patch modifies startup of the kfand to use kthread_run not a
combination of kernel_thread and daemonize, making the code a little
simpler and more maintaintable.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/macintosh/therm_pm72.c |   11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff -puN drivers/macintosh/therm_pm72.c~macintosh-therm_pm72c-partially-convert-to-kthread-api drivers/macintosh/therm_pm72.c
--- a/drivers/macintosh/therm_pm72.c~macintosh-therm_pm72c-partially-convert-to-kthread-api
+++ a/drivers/macintosh/therm_pm72.c
@@ -122,6 +122,7 @@
 #include <linux/reboot.h>
 #include <linux/kmod.h>
 #include <linux/i2c.h>
+#include <linux/kthread.h>
 #include <asm/prom.h>
 #include <asm/machdep.h>
 #include <asm/io.h>
@@ -162,7 +163,7 @@ static struct slots_pid_state		slots_sta
 static int				state;
 static int				cpu_count;
 static int				cpu_pid_type;
-static pid_t				ctrl_task;
+static int				ctrl_task;
 static struct completion		ctrl_complete;
 static int				critical_state;
 static int				rackmac;
@@ -1780,8 +1781,6 @@ static int call_critical_overtemp(void)
  */
 static int main_control_loop(void *x)
 {
-	daemonize("kfand");
-
 	DBG("main_control_loop started\n");
 
 	down(&driver_lock);
@@ -1860,7 +1859,6 @@ static int main_control_loop(void *x)
 			machine_power_off();
 		}
 
-		// FIXME: Deal with signals
 		elapsed = jiffies - start;
 		if (elapsed < HZ)
 			schedule_timeout_interruptible(HZ - elapsed);
@@ -1955,9 +1953,12 @@ static int create_control_loops(void)
  */
 static void start_control_loops(void)
 {
+	struct task_struct *task;
 	init_completion(&ctrl_complete);
 
-	ctrl_task = kernel_thread(main_control_loop, NULL, SIGCHLD | CLONE_KERNEL);
+	task = kthread_run(main_control_loop, NULL, "kfand");
+	if (!IS_ERR(task))
+		ctrl_task = 1;
 }
 
 /*
_