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Message-Id: <20180823074921.149034660@linuxfoundation.org>
Date:   Thu, 23 Aug 2018 09:53:12 +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,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Inki Dae <inki.dae@...sung.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.4 36/79] drm/exynos: decon5433: Fix WINCONx reset value

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

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

From: Marek Szyprowski <m.szyprowski@...sung.com>

[ Upstream commit 7b7aa62c05eac9789c208b946f515983a9255d8d ]

The only bits that should be preserved in decon_win_set_fmt() is
WINCONx_ENWIN_F. All other bits depends on the selected pixel formats and
are set by the mentioned function.

Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
Signed-off-by: Inki Dae <inki.dae@...sung.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/exynos/exynos5433_drm_decon.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
@@ -190,7 +190,7 @@ static void decon_win_set_pixfmt(struct
 	unsigned long val;
 
 	val = readl(ctx->addr + DECON_WINCONx(win));
-	val &= ~WINCONx_BPPMODE_MASK;
+	val &= WINCONx_ENWIN_F;
 
 	switch (fb->pixel_format) {
 	case DRM_FORMAT_XRGB1555:


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