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

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

From: Marek Szyprowski <[email protected]>

[ 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 <[email protected]>
Signed-off-by: Inki Dae <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 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
@@ -260,7 +260,7 @@ 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->format->format) {
        case DRM_FORMAT_XRGB1555:


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