include/linux/blk-pm.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifndef _BLK_PM_H_
   4 #define _BLK_PM_H_
   5
   6 struct device;
   7 struct request_queue;
   8
   9 /*
  10  * block layer runtime pm functions
  11  */
  12 #ifdef CONFIG_PM
  13 extern void blk_pm_runtime_init(struct request_queue *q, struct device *dev);
  14 extern int blk_pre_runtime_suspend(struct request_queue *q);
  15 extern void blk_post_runtime_suspend(struct request_queue *q, int err);
  16 extern void blk_pre_runtime_resume(struct request_queue *q);
  17 extern void blk_post_runtime_resume(struct request_queue *q);
  18 #else
  19 static inline void blk_pm_runtime_init(struct request_queue *q,
  20                                        struct device *dev) {}
  21 #endif
  22
  23 #endif /* _BLK_PM_H_ */