Merge "disp: msm: sde: avoid registering vblank callback during CWB"

msm/sde/sde_encoder.c

@@ -3057,6 +3057,11 @@ void sde_encoder_register_vblank_callback(struct drm_encoder *drm_enc,
 	SDE_DEBUG_ENC(sde_enc, "\n");
 	SDE_EVT32(DRMID(drm_enc), enable);
 
+	if (sde_encoder_in_clone_mode(drm_enc)) {
+		SDE_EVT32(DRMID(drm_enc), SDE_EVTLOG_ERROR);
+		return;
+	}
+
 	spin_lock_irqsave(&sde_enc->enc_spinlock, lock_flags);
 	sde_enc->crtc_vblank_cb = vbl_cb;
 	sde_enc->crtc_vblank_cb_data = vbl_data;