From 4c23f4ac6bfda5e70556b495f840c1d6f1008ace Mon Sep 17 00:00:00 2001
From: Inki Dae <inki.dae@samsung.com>
Date: Wed, 15 Feb 2012 11:25:20 +0900
Subject: [PATCH] --- yaml --- r: 287795 b: refs/heads/master c:
 c5614ae326c7fdd244d8e0365b8b78d5e3cd5bf4 h: refs/heads/master i:   287793:
 f971748c28788d1f0427ef29432e7490604b17d8   287791:
 648fecd8d977455c8a9f35e8840ea0de275b4e6c v: v3

---
 [refs]                                         | 2 +-
 trunk/drivers/gpu/drm/exynos/exynos_drm_crtc.c | 6 +++---
 trunk/drivers/gpu/drm/exynos/exynos_drm_fimd.c | 7 ++++++-
 trunk/drivers/gpu/drm/exynos/exynos_mixer.c    | 7 ++++++-
 4 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/[refs] b/[refs]
index 6aefb9feb37a..6132fd7f37f2 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d081f5660422270856b77bcbbaa312138f556c9e
+refs/heads/master: c5614ae326c7fdd244d8e0365b8b78d5e3cd5bf4
diff --git a/trunk/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/trunk/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index e3861ac49295..de818831a511 100644
--- a/trunk/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/trunk/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -307,9 +307,6 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
 		 */
 		event->pipe = exynos_crtc->pipe;
 
-		list_add_tail(&event->base.link,
-				&dev_priv->pageflip_event_list);
-
 		ret = drm_vblank_get(dev, exynos_crtc->pipe);
 		if (ret) {
 			DRM_DEBUG("failed to acquire vblank counter\n");
@@ -318,6 +315,9 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
 			goto out;
 		}
 
+		list_add_tail(&event->base.link,
+				&dev_priv->pageflip_event_list);
+
 		crtc->fb = fb;
 		ret = exynos_drm_crtc_update(crtc);
 		if (ret) {
diff --git a/trunk/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/trunk/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index b6a737d196ae..0dbb32bb18a3 100644
--- a/trunk/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/trunk/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -604,7 +604,12 @@ static void fimd_finish_pageflip(struct drm_device *drm_dev, int crtc)
 	}
 
 	if (is_checked) {
-		drm_vblank_put(drm_dev, crtc);
+		/*
+		 * call drm_vblank_put only in case that drm_vblank_get was
+		 * called.
+		 */
+		if (atomic_read(&drm_dev->vblank_refcount[crtc]) > 0)
+			drm_vblank_put(drm_dev, crtc);
 
 		/*
 		 * don't off vblank if vblank_disable_allowed is 1,
diff --git a/trunk/drivers/gpu/drm/exynos/exynos_mixer.c b/trunk/drivers/gpu/drm/exynos/exynos_mixer.c
index 47961679c447..93846e810e38 100644
--- a/trunk/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/trunk/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -712,7 +712,12 @@ static void mixer_finish_pageflip(struct drm_device *drm_dev, int crtc)
 	}
 
 	if (is_checked)
-		drm_vblank_put(drm_dev, crtc);
+		/*
+		 * call drm_vblank_put only in case that drm_vblank_get was
+		 * called.
+		 */
+		if (atomic_read(&drm_dev->vblank_refcount[crtc]) > 0)
+			drm_vblank_put(drm_dev, crtc);
 
 	spin_unlock_irqrestore(&drm_dev->event_lock, flags);
 }