Merge branch 'poll' into staging/for_v3.4

* poll: (5970 commits)
  poll: add poll_requested_events() and poll_does_not_wait() functions
  crc32: select an algorithm via Kconfig
  crc32: add self-test code for crc32c
  crypto: crc32c should use library implementation
  crc32: bolt on crc32c
  crc32: add note about this patchset to crc32.c
  crc32: optimize loop counter for x86
  crc32: add slice-by-8 algorithm to existing code
  crc32: make CRC_*_BITS definition correspond to actual bit counts
  crc32: fix mixing of endian-specific types
  crc32: miscellaneous cleanups
  crc32: simplify unit test code
  crc32: move long comment about crc32 fundamentals to Documentation/
  crc32: remove two instances of trailing whitespaces
  checkpatch: check for quoted strings broken across lines
  checkpatch: whitespace - add/remove blank lines
  checkpatch: warn on use of yield()
  checkpatch: add --strict tests for braces, comments and casts
  checkpatch: add [] to type extensions
  checkpatch: high precedence operators do not require additional parentheses in #defines
  ...

1 files changed, 30 insertions, 7 deletions

diff --git a/drivers/staging/omapdrm/omap_crtc.c b/drivers/staging/omapdrm/omap_crtc.c
index 17ca163..490a7f1 100644
--- a/drivers/staging/omapdrm/omap_crtc.c
+++ b/drivers/staging/omapdrm/omap_crtc.c
@@ -118,29 +118,35 @@ static void omap_crtc_load_lut(struct drm_crtc *crtc)
 {
 }
 
-static void page_flip_cb(void *arg)
+static void vblank_cb(void *arg)
 {
+	static uint32_t sequence = 0;
 	struct drm_crtc *crtc = arg;
 	struct drm_device *dev = crtc->dev;
 	struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 	struct drm_pending_vblank_event *event = omap_crtc->event;
-	struct drm_framebuffer *old_fb = omap_crtc->old_fb;
-	struct timeval now;
 	unsigned long flags;
+	struct timeval now;
 
 	WARN_ON(!event);
 
 	omap_crtc->event = NULL;
-	omap_crtc->old_fb = NULL;
-
-	omap_crtc_mode_set_base(crtc, crtc->x, crtc->y, old_fb);
 
 	/* wakeup userspace */
-	/* TODO: this should happen *after* flip in vsync IRQ handler */
 	if (event) {
+		do_gettimeofday(&now);
+
 		spin_lock_irqsave(&dev->event_lock, flags);
+		/* TODO: we can't yet use the vblank time accounting,
+		 * because omapdss lower layer is the one that knows
+		 * the irq # and registers the handler, which more or
+		 * less defeats how drm_irq works.. for now just fake
+		 * the sequence number and use gettimeofday..
+		 *
 		event->event.sequence = drm_vblank_count_and_time(
 				dev, omap_crtc->id, &now);
+		 */
+		event->event.sequence = sequence++;
 		event->event.tv_sec = now.tv_sec;
 		event->event.tv_usec = now.tv_usec;
 		list_add_tail(&event->base.link,
@@ -150,6 +156,23 @@ static void page_flip_cb(void *arg)
 	}
 }
 
+static void page_flip_cb(void *arg)
+{
+	struct drm_crtc *crtc = arg;
+	struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
+	struct drm_framebuffer *old_fb = omap_crtc->old_fb;
+
+	omap_crtc->old_fb = NULL;
+
+	omap_crtc_mode_set_base(crtc, crtc->x, crtc->y, old_fb);
+
+	/* really we'd like to setup the callback atomically w/ setting the
+	 * new scanout buffer to avoid getting stuck waiting an extra vblank
+	 * cycle.. for now go for correctness and later figure out speed..
+	 */
+	omap_plane_on_endwin(omap_crtc->plane, vblank_cb, crtc);
+}
+
 static int omap_crtc_page_flip_locked(struct drm_crtc *crtc,
 		 struct drm_framebuffer *fb,
 		 struct drm_pending_vblank_event *event)