From: Boris Brezillon <boris.brezillon@free-electrons.com>
Date: Fri, 27 May 2016 14:09:25 +0000 (+0200)
Subject: drm: atmel-hlcdc: actually disable scaling when no scaling is required
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1b7e38b92b0bbd363369f5160f13f4d26140972d;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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

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@free-electrons.com>
Reported-by: Alex Vazquez <avazquez.dev@gmail.com>
Reviewed-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Fixes: 1a396789f65a ("drm: add Atmel HLCDC Display Controller support")
Cc: <stable@vger.kernel.org>
---

diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
index aef3ca8a81fa..016c191221f3 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);
 	}
 }