Patch "drm: atmel-hlcdc: actually disable scaling when no scaling is required" has been added to the 4.4-stable tree

Patch "drm: atmel-hlcdc: actually disable scaling when no scaling is required" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

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

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-atmel-hlcdc-actually-disable-scaling-when-no-scaling-is-required.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 1b7e38b92b0bbd363369f5160f13f4d26140972d Mon Sep 17 00:00:00 2001
From: Boris Brezillon <boris.brezillon@free-electrons.com>
Date: Fri, 27 May 2016 16:09:25 +0200
Subject: drm: atmel-hlcdc: actually disable scaling when no scaling is required

From: Boris Brezillon <boris.brezillon@free-electrons.com>

commit 1b7e38b92b0bbd363369f5160f13f4d26140972d upstream.

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")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
@@ -335,6 +335,8 @@ atmel_hlcdc_plane_update_pos_and_size(st
 
 		atmel_hlcdc_layer_update_cfg(&plane->layer, 13, 0xffffffff,
 					     factor_reg);
+	} else {
+		atmel_hlcdc_layer_update_cfg(&plane->layer, 13, 0xffffffff, 0);
 	}
 }
 


Patches currently in stable-queue which might be from boris.brezillon@free-electrons.com are

queue-4.4/drm-atmel-hlcdc-actually-disable-scaling-when-no-scaling-is-required.patch