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-rw-r--r--block/blk-pm.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/block/blk-pm.h b/block/blk-pm.h
new file mode 100644
index 000000000..8a5a0d4b3
--- /dev/null
+++ b/block/blk-pm.h
@@ -0,0 +1,35 @@
+/* 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);
+}
+#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)
+{
+}
+#endif
+
+#endif /* _BLOCK_BLK_PM_H_ */