xref: /linux/block/blk-pm.h (revision 9fb40717) 
1 /* SPDX-License-Identifier: GPL-2.0 */
2 
3 #ifndef _BLOCK_BLK_PM_H_
4 #define _BLOCK_BLK_PM_H_
5 
6 #include <linux/pm_runtime.h>
7 
8 #ifdef CONFIG_PM
blk_pm_resume_queue(const bool pm,struct request_queue * q)9 static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q)
10 {
11 	if (!q->dev || !blk_queue_pm_only(q))
12 		return 1;	/* Nothing to do */
13 	if (pm && q->rpm_status != RPM_SUSPENDED)
14 		return 1;	/* Request allowed */
15 	pm_request_resume(q->dev);
16 	return 0;
17 }
18 
blk_pm_mark_last_busy(struct request * rq)19 static inline void blk_pm_mark_last_busy(struct request *rq)
20 {
21 	if (rq->q->dev && !(rq->rq_flags & RQF_PM))
22 		pm_runtime_mark_last_busy(rq->q->dev);
23 }
24 #else
blk_pm_resume_queue(const bool pm,struct request_queue * q)25 static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q)
26 {
27 	return 1;
28 }
29 
blk_pm_mark_last_busy(struct request * rq)30 static inline void blk_pm_mark_last_busy(struct request *rq)
31 {
32 }
33 #endif
34 
35 #endif /* _BLOCK_BLK_PM_H_ */
36