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
blk_pm_runtime_init(struct request_queue * q,struct device * dev)19 static inline void blk_pm_runtime_init(struct request_queue *q,
20 				       struct device *dev) {}
21 #endif
22 
23 #endif /* _BLK_PM_H_ */
24