linux-kernel - [PATCH 4.9 053/104] drm: mali-dp: Fix transposed horizontal/vertical flip

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Message-Id: <20171006083848.620532233@linuxfoundation.org>
Date:   Fri,  6 Oct 2017 10:51:31 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Brian Starkey <brian.starkey@....com>,
        Liviu Dudau <Liviu.Dudau@....com>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.9 053/104] drm: mali-dp: Fix transposed horizontal/vertical flip

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Brian Starkey <brian.starkey@....com>


[ Upstream commit 7916efe5b57505080b3cebf5bdb228b4eda008ea ]

The horizontal and vertical flip flags were the wrong way around,
causing reflect-x to result in reflect-y being applied and vice-versa.
Fix them.

Fixes: ad49f8602fe8 ("drm/arm: Add support for Mali Display Processors")

Signed-off-by: Brian Starkey <brian.starkey@....com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@....com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/arm/malidp_planes.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -184,9 +184,9 @@ static void malidp_de_plane_update(struc
 	if (plane->state->rotation & DRM_ROTATE_MASK)
 		val = ilog2(plane->state->rotation & DRM_ROTATE_MASK) << LAYER_ROT_OFFSET;
 	if (plane->state->rotation & DRM_REFLECT_X)
-		val |= LAYER_V_FLIP;
-	if (plane->state->rotation & DRM_REFLECT_Y)
 		val |= LAYER_H_FLIP;
+	if (plane->state->rotation & DRM_REFLECT_Y)
+		val |= LAYER_V_FLIP;
 
 	/* set the 'enable layer' bit */
 	val |= LAYER_ENABLE;