Mark the framebuffer with FBINFO_VIRTFB. The framebuffer range is
in DMA-able memory and should be accessed with the CPU's regular
memory ops.

v2:
        * drop FBINFO_FLAG_DEFAULT

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Javier Martinez Canillas <[email protected]>
Acked-by: Maxime Ripard <[email protected]>
Cc: Inki Dae <[email protected]>
Cc: Seung-Woo Kim <[email protected]>
Cc: Kyungmin Park <[email protected]>
Cc: Krzysztof Kozlowski <[email protected]>
Cc: Alim Akhtar <[email protected]>
---
 drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c 
b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index 7ca3424b59ce..828318de8529 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -79,6 +79,7 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper 
*helper,
        offset = fbi->var.xoffset * fb->format->cpp[0];
        offset += fbi->var.yoffset * fb->pitches[0];
 
+       fbi->flags |= FBINFO_VIRTFB;
        fbi->screen_buffer = exynos_gem->kvaddr + offset;
        fbi->screen_size = size;
        fbi->fix.smem_len = size;
-- 
2.41.0

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