Reject any rotation value which incorrectly represents multiple rotations.
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_atomic_plane.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index 7de7721..6cb564f 100644
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -156,6 +156,11 @@ static int intel_plane_atomic_check(struct drm_plane *plane,
intel_state->clip.y2 =
crtc_state->base.enable ? crtc_state->pipe_src_h : 0;
+ if (!is_power_of_2(state->rotation)) {
+ DRM_DEBUG_KMS("Multiple rotations are not supported!\n");
+ return -EINVAL;
+ }
+
if (state->fb && intel_rotation_90_or_270(state->rotation)) {
if (!(state->fb->modifier[0] == I915_FORMAT_MOD_Y_TILED ||
state->fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED)) {
--
2.4.3
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