[PATCH] uml: workqueue build fix

  arch/um/drivers/chan_kern.c:643: error: conflicting types for 'chan_interrupt'
  arch/um/include/chan_kern.h:31: error: previous declaration of 'chan_interrupt'

Cc: David Howells <dhowells@redhat.com>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

arch/um/drivers/line.c

@@ -31,9 +31,9 @@ static irqreturn_t line_interrupt(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static void line_timer_cb(void *arg)
+static void line_timer_cb(struct work_struct *work)
 {
-	struct line *line = arg;
+	struct line *line = container_of(work, struct line, task.work);
 
 	if(!line->throttled)
 		chan_interrupt(&line->chan_list, &line->task, line->tty,
@@ -443,7 +443,7 @@ int line_open(struct line *lines, struct tty_struct *tty)
 		 * is registered.
 		 */
 		enable_chan(line);
-		INIT_WORK(&line->task, line_timer_cb, line);
+		INIT_DELAYED_WORK(&line->task, line_timer_cb);
 
 		if(!line->sigio){
 			chan_enable_winch(&line->chan_list, tty);

arch/um/include/chan_kern.h

@@ -27,7 +27,7 @@ struct chan {
 	void *data;
 };
 
-extern void chan_interrupt(struct list_head *chans, struct work_struct *task,
+extern void chan_interrupt(struct list_head *chans, struct delayed_work *task,
 			   struct tty_struct *tty, int irq);
 extern int parse_chan_pair(char *str, struct line *line, int device,
 			   const struct chan_opts *opts);

arch/um/include/line.h

@@ -51,7 +51,7 @@ struct line {
 	char *tail;
 
 	int sigio;
-	struct work_struct task;
+	struct delayed_work task;
 	const struct line_driver *driver;
 	int have_irq;
 };