The resume helpers wait for a vblank to occurre hence IRQ need
to be enabled. This avoids a warning as follows during resume:
  WARNING: CPU: 0 PID: 314 at drivers/gpu/drm/drm_atomic_helper.c:1249 
drm_atomic_helper_wait_for_vblanks.part.1+0x284/0x288
  [CRTC:28:crtc-0] vblank wait timed out

Signed-off-by: Stefan Agner <ste...@agner.ch>
---
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c 
b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
index 24f234902646..aeeaf0bcf646 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -225,9 +225,8 @@ static int fsl_dcu_drm_pm_resume(struct device *dev)
                fsl_tcon_bypass_enable(fsl_dev->tcon);
        fsl_dcu_drm_init_planes(fsl_dev->drm);
 
-       drm_mode_config_helper_resume(fsl_dev->drm);
-
        enable_irq(fsl_dev->irq);
+       drm_mode_config_helper_resume(fsl_dev->drm);
 
        return 0;
 }
-- 
2.14.2

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