[PATCH] Char: timers cleanup

- Use timer macros to set function and data members and to modify
  expiration time.
- Use DEFINE_TIMER for global timers and do not init them at run-time in
  these cases.
- del_timer_sync is common in most cases -- we want to wait for timer
  function if it's still running.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Paul Fulghum <paulkf@microgate.com>
Cc: Kylene Jo Hall <kjhall@us.ibm.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Dmitry Torokhov <dtor@mail.ru>	(Input bits)
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 9 deletions

diff --git a/drivers/char/drm/via_dmablit.c b/drivers/char/drm/via_dmablit.c
index 2054d5773717..2881a06b6f55 100644
--- a/drivers/char/drm/via_dmablit.c
+++ b/drivers/char/drm/via_dmablit.c
@@ -376,10 +376,8 @@ via_dmablit_handler(drm_device_t *dev, int engine, int from_irq)
                         blitq->cur = cur;
                         blitq->num_outstanding--;
                         blitq->end = jiffies + DRM_HZ;
-                        if (!timer_pending(&blitq->poll_timer)) {
-                                blitq->poll_timer.expires = jiffies+1;
-                                add_timer(&blitq->poll_timer);
-                        }
+                        if (!timer_pending(&blitq->poll_timer))
+                                mod_timer(&blitq->poll_timer, jiffies + 1);
                 } else {
                         if (timer_pending(&blitq->poll_timer)) {
                                 del_timer(&blitq->poll_timer);
@@ -478,8 +476,7 @@ via_dmablit_timer(unsigned long data)
         via_dmablit_handler(dev, engine, 0);
         
         if (!timer_pending(&blitq->poll_timer)) {
-                blitq->poll_timer.expires = jiffies+1;
-                add_timer(&blitq->poll_timer);
+                mod_timer(&blitq->poll_timer, jiffies + 1);
 
                /*
                 * Rerun handler to delete timer if engines are off, and
@@ -574,9 +571,8 @@ via_init_dmablit(drm_device_t *dev)
                 }
                 DRM_INIT_WAITQUEUE(&blitq->busy_queue);
                 INIT_WORK(&blitq->wq, via_dmablit_workqueue);
-                init_timer(&blitq->poll_timer);
-                blitq->poll_timer.function = &via_dmablit_timer;
-                blitq->poll_timer.data = (unsigned long) blitq;
+                setup_timer(&blitq->poll_timer, via_dmablit_timer,
+                                (unsigned long)blitq);
         }       
 }