Print a warning when the user tries to rotate a non-TILER framebuffer.

Also set the rotation to 0, to avoid constant flood of the warnings in
case of page flipping.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
---
 drivers/gpu/drm/omapdrm/omap_fb.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/omapdrm/omap_fb.c 
b/drivers/gpu/drm/omapdrm/omap_fb.c
index d2b8c49bfb4a..03ba7c47eec3 100644
--- a/drivers/gpu/drm/omapdrm/omap_fb.c
+++ b/drivers/gpu/drm/omapdrm/omap_fb.c
@@ -218,6 +218,13 @@ void omap_framebuffer_update_scanout(struct 
drm_framebuffer *fb,
                info->rotation_type = OMAP_DSS_ROT_TILER;
                info->screen_width  = omap_gem_tiled_stride(plane->bo, orient);
        } else {
+               if (win->rotation) {
+                       dev_warn(fb->dev->dev,
+                               "rotation '%d' ignored for non-tiled fb\n",
+                               win->rotation);
+                       win->rotation = 0;
+               }
+
                info->paddr         = get_linear_addr(plane, format, 0, x, y);
                info->rotation_type = OMAP_DSS_ROT_DMA;
                info->screen_width  = plane->pitch;
-- 
1.8.3.2

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