[PATCH 19/25] drm/msm/dpu: don't use unsupported blend stages

[Dmitry Baryshkov]

The atomic_check compares blending stage with DPU_STAGE_MAX (maximum
amount of blending stages supported by the driver), however we should
compare it against .max_mixer_blendstages, the maximum blend stage
supported by the mixer.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 637d164667e9..952ff11162c0 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -927,9 +927,9 @@ static int dpu_plane_atomic_check(struct drm_plane *plane,
 	pstate->pipe.multirect_mode = DPU_SSPP_MULTIRECT_NONE;
 
 	pstate->stage = DPU_STAGE_0 + pstate->base.normalized_zpos;
-	if (pstate->stage >= DPU_STAGE_MAX) {
+	if (pstate->stage >= pdpu->catalog->caps->max_mixer_blendstages) {
 		DPU_ERROR("> %d plane stages assigned\n",
-				DPU_STAGE_MAX - DPU_STAGE_0);
+				pdpu->catalog->caps->max_mixer_blendstages - DPU_STAGE_0);
 		return -EINVAL;
 	}
 
-- 
2.34.1