unisys: replace kthread_create and wake_up_process with kthread_run

kthread_run calls kthread_create and if the thread is created
it then calls wake_up_process on the corresponding returned
task struct. So the code can be simplified by calling just
kthread_run.

Cc: Ken Cox <jkc@redhat.com>
Cc: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/uislib/uisthread.c

@@ -44,13 +44,12 @@ uisthread_start(struct uisthread_info *thrinfo,
 	thrinfo->should_stop = 0;
 	/* used to stop the thread */
 	init_completion(&thrinfo->has_stopped);
-	thrinfo->task = kthread_create(threadfn, thrcontext, name, NULL);
+	thrinfo->task = kthread_run(threadfn, thrcontext, name);
 	if (IS_ERR(thrinfo->task)) {
 		thrinfo->id = 0;
 		return 0;	/* failure */
 	}
 	thrinfo->id = thrinfo->task->pid;
-	wake_up_process(thrinfo->task);
 	LOGINF("started thread pid:%d\n", thrinfo->id);
 	return 1;
 }