Commit 66483a4a authored by Bart Van Assche's avatar Bart Van Assche Committed by Martin K. Petersen

scsi: Introduce scsi_start_queue()

This patch does not change any functionality.
Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Cc: Israel Rukshin <israelr@mellanox.com>
Cc: Max Gurtovoy <maxg@mellanox.com>
Cc: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 0db6ca8a
......@@ -3031,6 +3031,20 @@ static int scsi_internal_device_block(struct scsi_device *sdev)
return err;
}
void scsi_start_queue(struct scsi_device *sdev)
{
struct request_queue *q = sdev->request_queue;
unsigned long flags;
if (q->mq_ops) {
blk_mq_start_stopped_hw_queues(q, false);
} else {
spin_lock_irqsave(q->queue_lock, flags);
blk_start_queue(q);
spin_unlock_irqrestore(q->queue_lock, flags);
}
}
/**
* scsi_internal_device_unblock_nowait - resume a device after a block request
* @sdev: device to resume
......@@ -3049,9 +3063,6 @@ static int scsi_internal_device_block(struct scsi_device *sdev)
int scsi_internal_device_unblock_nowait(struct scsi_device *sdev,
enum scsi_device_state new_state)
{
struct request_queue *q = sdev->request_queue;
unsigned long flags;
/*
* Try to transition the scsi device to SDEV_RUNNING or one of the
* offlined states and goose the device queue if successful.
......@@ -3069,13 +3080,7 @@ int scsi_internal_device_unblock_nowait(struct scsi_device *sdev,
sdev->sdev_state != SDEV_OFFLINE)
return -EINVAL;
if (q->mq_ops) {
blk_mq_start_stopped_hw_queues(q, false);
} else {
spin_lock_irqsave(q->queue_lock, flags);
blk_start_queue(q);
spin_unlock_irqrestore(q->queue_lock, flags);
}
scsi_start_queue(sdev);
return 0;
}
......
......@@ -88,6 +88,7 @@ extern void scsi_run_host_queues(struct Scsi_Host *shost);
extern void scsi_requeue_run_queue(struct work_struct *work);
extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
extern void scsi_start_queue(struct scsi_device *sdev);
extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
extern int scsi_init_queue(void);
......
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