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authorChristoph Hellwig <hch@lst.de>2014-10-02 14:39:55 +0200
committerChristoph Hellwig <hch@lst.de>2014-11-12 11:19:39 +0100
commita62182f338b39a22035531c6afc0a8d2928b1df2 (patch)
tree57ca6cea82a09d2655daf5c161024c5015373646 /drivers/scsi/ipr.c
parent1d5203284d8acbdfdf9b478d434450b34f338f28 (diff)
downloadblackbird-op-linux-a62182f338b39a22035531c6afc0a8d2928b1df2.tar.gz
blackbird-op-linux-a62182f338b39a22035531c6afc0a8d2928b1df2.zip
scsi: provide a generic change_queue_type method
Most drivers use exactly the same implementation, so provide it as a library function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de>
Diffstat (limited to 'drivers/scsi/ipr.c')
-rw-r--r--drivers/scsi/ipr.c20
1 files changed, 3 insertions, 17 deletions
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 2a9578c116b7..3d689f6023e9 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -4364,24 +4364,10 @@ static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
res = (struct ipr_resource_entry *)sdev->hostdata;
-
- if (res) {
- if (ipr_is_gscsi(res) && sdev->tagged_supported) {
- /*
- * We don't bother quiescing the device here since the
- * adapter firmware does it for us.
- */
- scsi_set_tag_type(sdev, tag_type);
-
- if (tag_type)
- scsi_activate_tcq(sdev, sdev->queue_depth);
- else
- scsi_deactivate_tcq(sdev, sdev->queue_depth);
- } else
- tag_type = 0;
- } else
+ if (res && ipr_is_gscsi(res))
+ tag_type = scsi_change_queue_type(sdev, tag_type);
+ else
tag_type = 0;
-
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
return tag_type;
}
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