[POWERPC] Convert therm_pm72.c to use the kthread API

This converts the therm_pm72.c driver to use the kthread API.  I
thought about making it use kthread_stop() instead of the `state'
variable and the `ctrl_complete' completion, but that isn't simple and
will require changing the way that `state' is used.

Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/drivers/macintosh/therm_pm72.c b/drivers/macintosh/therm_pm72.c
index e43554e..6fadc9a 100644 (file)
--- a/drivers/macintosh/therm_pm72.c
+++ b/drivers/macintosh/therm_pm72.c
@@ -121,6 +121,7 @@
 #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>
@@ -161,7 +162,7 @@ static struct slots_pid_state               slots_state;
 static int                             state;
 static int                             cpu_count;
 static int                             cpu_pid_type;
-static pid_t                           ctrl_task;
+static struct task_struct              *ctrl_task;
 static struct completion               ctrl_complete;
 static int                             critical_state;
 static int                             rackmac;
@@ -1779,8 +1780,6 @@ static int call_critical_overtemp(void)
  */
 static int main_control_loop(void *x)
 {
-       daemonize("kfand");
-
        DBG("main_control_loop started\n");
 
        down(&driver_lock);
@@ -1956,7 +1955,7 @@ static void start_control_loops(void)
 {
        init_completion(&ctrl_complete);
 
-       ctrl_task = kernel_thread(main_control_loop, NULL, SIGCHLD | CLONE_KERNEL);
+       ctrl_task = kthread_run(main_control_loop, NULL, "kfand");
 }
 
 /*
@@ -1964,7 +1963,7 @@ static void start_control_loops(void)
  */
 static void stop_control_loops(void)
 {
-       if (ctrl_task != 0)
+       if (ctrl_task)
                wait_for_completion(&ctrl_complete);
 }