drm/exynos: remove wait queue for pending page flip

Exynos atomic commit procedures already does this job of waiting for
pending updates to finish, that means using pending_flip_queue is
pointless now because the disable CRTC procedure will never happen
during a page_flip.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

2 files changed, 1 insertions, 11 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index d6c2c3f8bc6e..0872aa2f450f 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -35,11 +35,6 @@ static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
 {
         struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
 
-        /* wait for the completion of page flip. */
-        if (!wait_event_timeout(exynos_crtc->pending_flip_queue,
-                                (exynos_crtc->event == NULL), HZ/20))
-                exynos_crtc->event = NULL;
-
         drm_crtc_vblank_off(crtc);
 
         if (exynos_crtc->ops->disable)
@@ -146,8 +141,6 @@ struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
         if (!exynos_crtc)
                 return ERR_PTR(-ENOMEM);
 
-        init_waitqueue_head(&exynos_crtc->pending_flip_queue);
-
         exynos_crtc->pipe = pipe;
         exynos_crtc->type = type;
         exynos_crtc->ops = ops;
@@ -215,10 +208,8 @@ void exynos_drm_crtc_finish_update(struct exynos_drm_crtc *exynos_crtc,
                 wake_up(&exynos_crtc->wait_update);
 
         spin_lock_irqsave(&crtc->dev->event_lock, flags);
-        if (exynos_crtc->event) {
+        if (exynos_crtc->event)
                 drm_crtc_send_vblank_event(crtc, exynos_crtc->event);
-                wake_up(&exynos_crtc->pending_flip_queue);
-        }
 
         exynos_crtc->event = NULL;
         spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 7193d94fde3b..b7ba21dfb696 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -145,7 +145,6 @@ struct exynos_drm_crtc {
         struct drm_crtc                 base;
         enum exynos_drm_output_type     type;
         unsigned int                    pipe;
-        wait_queue_head_t               pending_flip_queue;
         struct drm_pending_vblank_event *event;
         wait_queue_head_t               wait_update;
         atomic_t                        pending_update;