drm/fsl-dcu: deallocate fbdev CMA on unload

Free fbdev CMA using drm_fbdev_cma_fini on unload. This fixes
a warning when unloading the driver:
WARNING: CPU: 0 PID: 164 at drivers/gpu/drm/drm_crtc.c:5930 drm_mode_config_cleanup+0x204/0x208

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

1 files changed, 9 insertions, 0 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 9cbabb24e55c..182578dd3d6b 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -23,6 +23,7 @@
 
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 
 #include "fsl_dcu_drm_crtc.h"
@@ -90,6 +91,9 @@ static int fsl_dcu_load(struct drm_device *dev, unsigned long flags)
 
         return 0;
 done:
+        if (fsl_dev->fbdev)
+                drm_fbdev_cma_fini(fsl_dev->fbdev);
+
         drm_mode_config_cleanup(dev);
         drm_vblank_cleanup(dev);
         drm_irq_uninstall(dev);
@@ -100,6 +104,11 @@ done:
 
 static int fsl_dcu_unload(struct drm_device *dev)
 {
+        struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
+
+        if (fsl_dev->fbdev)
+                drm_fbdev_cma_fini(fsl_dev->fbdev);
+
         drm_mode_config_cleanup(dev);
         drm_vblank_cleanup(dev);
         drm_irq_uninstall(dev);