From: Alan Cox <a...@linux.intel.com>

If we set a small text framebuffer and have a bigger scanout then we want
to send black not random bits for the overscan.

Signed-off-by: Alan Cox <alan at linux.intel.com>
---

 drivers/gpu/drm/gma500/framebuffer.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/gma500/framebuffer.c 
b/drivers/gpu/drm/gma500/framebuffer.c
index c9fe4bd..4fc0d08 100644
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -408,6 +408,8 @@ static int psbfb_create(struct psb_fbdev *fbdev,
                        return -ENOMEM;
        }

+       memset(dev_priv->vram_addr + backing->offset, 0, size);
+
        mutex_lock(&dev->struct_mutex);

        info = framebuffer_alloc(0, device);

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