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authorBart Van Assche <bart.vanassche@sandisk.com>2017-06-02 14:21:56 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2017-06-12 20:55:59 -0400
commit66483a4a9f34427e3d6ec87d8e583f5d2a7cbb76 (patch)
tree84adbd5a27b1c5af45c56f13c6e7634861cd9d72 /drivers/scsi/scsi_lib.c
parent0db6ca8a5e1ea585795db3643ec7d50fc8cb1aff (diff)
scsi: Introduce scsi_start_queue()
This patch does not change any functionality. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Christoph 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: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
-rw-r--r--drivers/scsi/scsi_lib.c25
1 files changed, 15 insertions, 10 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 4b0bac3ac6ab..ed744668b984 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -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;
}

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