From a474478642d57641ea06645104a15acc0420f01a Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Mon, 29 Aug 2016 17:51:24 +0200 Subject: [PATCH] drm/imx: fix crtc vblank state regression The atomic conversion lost the notification to let the DRM core know about the current state of the CRTC vblank interrupts. This regressed the ability of the core to reject page flip attempts on currently disabled CRTCs. Add back the notifications. Signed-off-by: Lucas Stach Signed-off-by: Philipp Zabel --- drivers/gpu/drm/imx/ipuv3-crtc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c index 08e188b..462056e 100644 --- a/drivers/gpu/drm/imx/ipuv3-crtc.c +++ b/drivers/gpu/drm/imx/ipuv3-crtc.c @@ -76,6 +76,8 @@ static void ipu_crtc_disable(struct drm_crtc *crtc) crtc->state->event = NULL; } spin_unlock_irq(&crtc->dev->event_lock); + + drm_crtc_vblank_off(crtc); } static void imx_drm_crtc_reset(struct drm_crtc *crtc) @@ -175,6 +177,8 @@ static int ipu_crtc_atomic_check(struct drm_crtc *crtc, static void ipu_crtc_atomic_begin(struct drm_crtc *crtc, struct drm_crtc_state *old_crtc_state) { + drm_crtc_vblank_on(crtc); + spin_lock_irq(&crtc->dev->event_lock); if (crtc->state->event) { WARN_ON(drm_crtc_vblank_get(crtc)); -- 2.7.4