add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/ide/ide-pm.c
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@@ -21,7 +21,7 @@
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 	memset(&rqpm, 0, sizeof(rqpm));
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 	rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, 0);
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 	ide_req(rq)->type = ATA_PRIV_PM_SUSPEND;
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-	rq->special = &rqpm;
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+	ide_req(rq)->special = &rqpm;
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 	rqpm.pm_step = IDE_PM_START_SUSPEND;
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 	if (mesg.event == PM_EVENT_PRETHAW)
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 		mesg.event = PM_EVENT_FREEZE;
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@@ -40,32 +40,17 @@
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 	return ret;
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 }
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-static void ide_end_sync_rq(struct request *rq, blk_status_t error)
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-{
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-	complete(rq->end_io_data);
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-}
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-
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 static int ide_pm_execute_rq(struct request *rq)
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 {
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 	struct request_queue *q = rq->q;
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-	DECLARE_COMPLETION_ONSTACK(wait);
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-	rq->end_io_data = &wait;
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-	rq->end_io = ide_end_sync_rq;
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-
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-	spin_lock_irq(q->queue_lock);
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 	if (unlikely(blk_queue_dying(q))) {
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 		rq->rq_flags |= RQF_QUIET;
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 		scsi_req(rq)->result = -ENXIO;
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-		__blk_end_request_all(rq, BLK_STS_OK);
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-		spin_unlock_irq(q->queue_lock);
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+		blk_mq_end_request(rq, BLK_STS_OK);
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 		return -ENXIO;
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 	}
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-	__elv_add_request(q, rq, ELEVATOR_INSERT_FRONT);
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-	__blk_run_queue_uncond(q);
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-	spin_unlock_irq(q->queue_lock);
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-
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-	wait_for_completion_io(&wait);
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+	blk_execute_rq(q, NULL, rq, true);
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 	return scsi_req(rq)->result ? -EIO : 0;
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 }
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@@ -79,6 +64,8 @@
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 	struct ide_pm_state rqpm;
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 	int err;
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+	blk_mq_start_stopped_hw_queues(drive->queue, true);
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+
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 	if (ide_port_acpi(hwif)) {
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 		/* call ACPI _PS0 / _STM only once */
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 		if ((drive->dn & 1) == 0 || pair == NULL) {
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@@ -90,9 +77,9 @@
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 	}
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 	memset(&rqpm, 0, sizeof(rqpm));
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-	rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, BLK_MQ_REQ_PREEMPT);
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+	rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, BLK_MQ_REQ_PM);
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 	ide_req(rq)->type = ATA_PRIV_PM_RESUME;
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-	rq->special = &rqpm;
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+	ide_req(rq)->special = &rqpm;
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 	rqpm.pm_step = IDE_PM_START_RESUME;
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 	rqpm.pm_state = PM_EVENT_ON;
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@@ -111,7 +98,7 @@
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 void ide_complete_power_step(ide_drive_t *drive, struct request *rq)
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 {
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-	struct ide_pm_state *pm = rq->special;
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+	struct ide_pm_state *pm = ide_req(rq)->special;
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 #ifdef DEBUG_PM
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 	printk(KERN_INFO "%s: complete_power_step(step: %d)\n",
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@@ -141,7 +128,7 @@
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 ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *rq)
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 {
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-	struct ide_pm_state *pm = rq->special;
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+	struct ide_pm_state *pm = ide_req(rq)->special;
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 	struct ide_cmd cmd = { };
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 	switch (pm->pm_step) {
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@@ -213,8 +200,7 @@
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 void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq)
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 {
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 	struct request_queue *q = drive->queue;
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-	struct ide_pm_state *pm = rq->special;
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-	unsigned long flags;
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+	struct ide_pm_state *pm = ide_req(rq)->special;
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 	ide_complete_power_step(drive, rq);
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 	if (pm->pm_step != IDE_PM_COMPLETED)
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@@ -224,22 +210,19 @@
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 	printk("%s: completing PM request, %s\n", drive->name,
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 	       (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND) ? "suspend" : "resume");
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 #endif
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-	spin_lock_irqsave(q->queue_lock, flags);
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 	if (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND)
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-		blk_stop_queue(q);
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+		blk_mq_stop_hw_queues(q);
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 	else
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 		drive->dev_flags &= ~IDE_DFLAG_BLOCKED;
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-	spin_unlock_irqrestore(q->queue_lock, flags);
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 	drive->hwif->rq = NULL;
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-	if (blk_end_request(rq, BLK_STS_OK, 0))
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-		BUG();
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+	blk_mq_end_request(rq, BLK_STS_OK);
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 }
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 void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
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 {
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-	struct ide_pm_state *pm = rq->special;
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+	struct ide_pm_state *pm = ide_req(rq)->special;
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 	if (blk_rq_is_private(rq) &&
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 	    ide_req(rq)->type == ATA_PRIV_PM_SUSPEND &&
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@@ -260,7 +243,6 @@
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 		ide_hwif_t *hwif = drive->hwif;
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 		const struct ide_tp_ops *tp_ops = hwif->tp_ops;
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 		struct request_queue *q = drive->queue;
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-		unsigned long flags;
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 		int rc;
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 #ifdef DEBUG_PM
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 		printk("%s: Wakeup request inited, waiting for !BSY...\n", drive->name);
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@@ -274,8 +256,6 @@
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 		if (rc)
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 			printk(KERN_WARNING "%s: drive not ready on wakeup\n", drive->name);
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-		spin_lock_irqsave(q->queue_lock, flags);
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-		blk_start_queue(q);
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-		spin_unlock_irqrestore(q->queue_lock, flags);
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+		blk_mq_start_hw_queues(q);
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 	}
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 }