/* SPDX-License-Identifier: GPL-2.0 */
  
  #ifndef _BLOCK_BLK_PM_H_
  #define _BLOCK_BLK_PM_H_
  
  #include <linux/pm_runtime.h>
  
  #ifdef CONFIG_PM

  static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q)

  {

  	if (!q->dev || !blk_queue_pm_only(q))
  		return 1;	/* Nothing to do */
  	if (pm && q->rpm_status != RPM_SUSPENDED)
  		return 1;	/* Request allowed */
  	pm_request_resume(q->dev);
  	return 0;

  }
  
  static inline void blk_pm_mark_last_busy(struct request *rq)
  {
  	if (rq->q->dev && !(rq->rq_flags & RQF_PM))
  		pm_runtime_mark_last_busy(rq->q->dev);
  }

  static inline void blk_pm_requeue_request(struct request *rq)
  {

  	lockdep_assert_held(&rq->q->queue_lock);

  	if (rq->q->dev && !(rq->rq_flags & RQF_PM))
  		rq->q->nr_pending--;
  }
  
  static inline void blk_pm_add_request(struct request_queue *q,
  				      struct request *rq)
  {

  	lockdep_assert_held(&q->queue_lock);

  
  	if (q->dev && !(rq->rq_flags & RQF_PM))
  		q->nr_pending++;

  }
  
  static inline void blk_pm_put_request(struct request *rq)
  {

  	lockdep_assert_held(&rq->q->queue_lock);

  
  	if (rq->q->dev && !(rq->rq_flags & RQF_PM))
  		--rq->q->nr_pending;

  }
  #else

  static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q)

  {

  	return 1;

  }
  
  static inline void blk_pm_mark_last_busy(struct request *rq)
  {
  }

  static inline void blk_pm_requeue_request(struct request *rq)
  {
  }
  
  static inline void blk_pm_add_request(struct request_queue *q,
  				      struct request *rq)
  {
  }
  
  static inline void blk_pm_put_request(struct request *rq)
  {
  }
  #endif
  
  #endif /* _BLOCK_BLK_PM_H_ */