hdlcd does not support rotation - check for it and reject plane updates
that try to rotate a plane.
Signed-off-by: Russell King <rmk+ker...@armlinux.org.uk>
---
drivers/gpu/drm/arm/hdlcd_crtc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/arm/hdlcd_crtc.c b/drivers/gpu/drm/arm/hdlcd_crtc.c
index cf70184fd028..171acc842368 100644
--- a/drivers/gpu/drm/arm/hdlcd_crtc.c
+++ b/drivers/gpu/drm/arm/hdlcd_crtc.c
@@ -215,6 +215,10 @@ static int hdlcd_plane_atomic_check(struct drm_plane
*plane,
if (!crtc)
return 0;
+ /* We do not support rotation */
+ if (state->rotation != DRM_ROTATE_0)
+ return -EINVAL;
+
crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
if (!crtc_state->enable)
return -EINVAL;
--
2.7.4
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