2452 	mutex_lock(&dev_priv->sb_lock);  in chv_post_disable_dp()
2457 	mutex_unlock(&dev_priv->sb_lock);  in chv_post_disable_dp()
2758 	mutex_lock(&dev_priv->sb_lock);  in vlv_pre_enable_dp()
2771 	mutex_unlock(&dev_priv->sb_lock);  in vlv_pre_enable_dp()
2789 	mutex_lock(&dev_priv->sb_lock);  in vlv_dp_pre_pll_enable()
2803 	mutex_unlock(&dev_priv->sb_lock);  in vlv_dp_pre_pll_enable()
2819 	mutex_lock(&dev_priv->sb_lock);  in chv_pre_enable_dp()
2884 	mutex_unlock(&dev_priv->sb_lock);  in chv_pre_enable_dp()
2920 	mutex_lock(&dev_priv->sb_lock);  in chv_dp_pre_pll_enable()
2975 	mutex_unlock(&dev_priv->sb_lock);  in chv_dp_pre_pll_enable()
2984 	mutex_lock(&dev_priv->sb_lock);  in chv_dp_post_pll_disable()
2997 	mutex_unlock(&dev_priv->sb_lock);  in chv_dp_post_pll_disable()
3233 	mutex_lock(&dev_priv->sb_lock);  in vlv_signal_levels()
3242 	mutex_unlock(&dev_priv->sb_lock);  in vlv_signal_levels()
3335 	mutex_lock(&dev_priv->sb_lock);  in chv_signal_levels()
3416 	mutex_unlock(&dev_priv->sb_lock);  in chv_signal_levels()