drm/exynos: added comments and code clean.

this patch adds the following comments and code clean.
- add comment of exynos_drm_crtc_apply() call at page flip time.
- add comment that when exynos_drm_fbdev_reinit() is called,
  why num_connector is 0 and also the framebuffers should be destroyed.
- remove buf_off member from struct exynos_drm_overlay because this member
  isn't used anymore.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 002f292..63c1422 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -82,7 +82,6 @@ struct exynos_drm_overlay_ops {
  * @paddr: bus(accessed by dma) physical memory address to this overlay
  *		and this is physically continuous.
  * @vaddr: virtual memory addresss to this overlay.
- * @buf_off: start offset of framebuffer to be displayed.
  * @default_win: a window to be enabled.
  * @color_key: color key on or off.
  * @index_color: if using color key feature then this value would be used
@@ -111,7 +110,6 @@ struct exynos_drm_overlay {
 	unsigned int pitch;
 	dma_addr_t paddr;
 	void __iomem *vaddr;
-	unsigned int buf_off;
 
 	bool default_win;
 	bool color_key;