[PATCH] drm: atmel-hlcdc: actually disable scaling when no scaling is required

[Boris Brezillon]

The driver is only enabling scaling, but never disabling it, thus, if you
enable the scaling feature once it stays enabled forever.

Signed-off-by: Boris Brezillon <boris.brezillon at free-electrons.com>
Reported-by: Alex Vazquez <avazquez.dev at gmail.com>
Fixes: 1a396789f65a ("drm: add Atmel HLCDC Display Controller support")
Cc: <stable at vger.kernel.org>
---
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c 
b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
index aef3ca8..016c191 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
@@ -339,6 +339,8 @@ atmel_hlcdc_plane_update_pos_and_size(struct 
atmel_hlcdc_plane *plane,

                atmel_hlcdc_layer_update_cfg(&plane->layer, 13, 0xffffffff,
                                             factor_reg);
+       } else {
+               atmel_hlcdc_layer_update_cfg(&plane->layer, 13, 0xffffffff, 0);
        }
 }

-- 
2.7.4