drm/imx: use drm_send_vblank_event() helper

Also, slightly changes the behavior to always put the vblank irq,
even if userspace did not request a vblank event.  As far as I
can tell, the previous code would leak a vblank irq refcnt if
userspace requested a pageflip without event.

Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 2 insertions, 19 deletions

diff --git a/drivers/staging/imx-drm/ipuv3-crtc.c b/drivers/staging/imx-drm/ipuv3-crtc.c
index b028b0d1317b..1cd74f5e4c76 100644
--- a/drivers/staging/imx-drm/ipuv3-crtc.c
+++ b/drivers/staging/imx-drm/ipuv3-crtc.c
@@ -311,31 +311,14 @@ static int ipu_crtc_mode_set(struct drm_crtc *crtc,
 
 static void ipu_crtc_handle_pageflip(struct ipu_crtc *ipu_crtc)
 {
-        struct drm_pending_vblank_event *e;
-        struct timeval now;
         unsigned long flags;
         struct drm_device *drm = ipu_crtc->base.dev;
 
         spin_lock_irqsave(&drm->event_lock, flags);
-
-        e = ipu_crtc->page_flip_event;
-        if (!e) {
-                spin_unlock_irqrestore(&drm->event_lock, flags);
-                return;
-        }
-
-        do_gettimeofday(&now);
-        e->event.sequence = 0;
-        e->event.tv_sec = now.tv_sec;
-        e->event.tv_usec = now.tv_usec;
+        if (ipu_crtc->page_flip_event)
+                drm_send_vblank_event(drm, -1, ipu_crtc->page_flip_event);
         ipu_crtc->page_flip_event = NULL;
-
         imx_drm_crtc_vblank_put(ipu_crtc->imx_crtc);
-
-        list_add_tail(&e->base.link, &e->base.file_priv->event_list);
-
-        wake_up_interruptible(&e->base.file_priv->event_wait);
-
         spin_unlock_irqrestore(&drm->event_lock, flags);
 }