patches.renesas/0250-drm-rcar-du-Clear-handled-event-pointer-in-CRTC-stat.patch

From 499973b260751d5bc38f7b0d89f6b8b07373d525 Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Date: Sun, 12 Feb 2017 02:45:11 +0200
Subject: [PATCH 250/286] drm: rcar-du: Clear handled event pointer in CRTC
 state

The atomic commit helper requires drivers to clear the event pointer
stored in the CRTC state when the event is handled. In preparation to
using the helper, fix the driver.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
(cherry picked from commit 15b181a309e9c9bff8d0bc57d7da2d5f87c14186)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 drivers/gpu/drm/rcar-du/rcar_du_crtc.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -501,16 +501,16 @@ static void rcar_du_crtc_disable(struct
 static void rcar_du_crtc_atomic_begin(struct drm_crtc *crtc,
 				      struct drm_crtc_state *old_crtc_state)
 {
-	struct drm_pending_vblank_event *event = crtc->state->event;
 	struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
 	struct drm_device *dev = rcrtc->crtc.dev;
 	unsigned long flags;
 
-	if (event) {
+	if (crtc->state->event) {
 		WARN_ON(drm_crtc_vblank_get(crtc) != 0);
 
 		spin_lock_irqsave(&dev->event_lock, flags);
-		rcrtc->event = event;
+		rcrtc->event = crtc->state->event;
+		crtc->state->event = NULL;
 		spin_unlock_irqrestore(&dev->event_lock, flags);
 	}