drm/fsl-dcu: disable outputs before unloading driver

Make sure that all outputs are disabled before unloading the DRM
driver. Otherwise vblank handling is not shut down properly and
warnings such as this appear:
WARNING: CPU: 0 PID: 540 at drivers/gpu/drm/drm_irq.c:339 drm_vblank_cleanup+0x5c/0x94

Signed-off-by: Stefan Agner <stefan@agner.ch>

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 30c46a80a540fde5bd59dcf138fddc527246a70b..f8313f2b113aebbc7e088d4ff77e5c79ae4b2b1a 100644 (file)
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -108,6 +108,7 @@ static int fsl_dcu_unload(struct drm_device *dev)
 {
        struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
 
+       drm_crtc_force_disable_all(dev);
        drm_kms_helper_poll_fini(dev);
 
        if (fsl_dev->fbdev)