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 extern void blk_set_runtime_active(struct request_queue *q); 19 #else 20 static inline void blk_pm_runtime_init(struct request_queue *q, 21 struct device *dev) {} 22 #endif 23 24 #endif /* _BLK_PM_H_ */ 25