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>

1 files changed, 1 insertions, 8 deletions

diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 238e06f13b8a..7bcace2cdd53 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -4532,14 +4532,7 @@ sdebug_change_qdepth(struct scsi_device *sdev, int qdepth, int reason)
 static int
 sdebug_change_qtype(struct scsi_device *sdev, int qtype)
 {
-        if (sdev->tagged_supported) {
-                scsi_set_tag_type(sdev, qtype);
-                if (qtype)
-                        scsi_activate_tcq(sdev, sdev->queue_depth);
-                else
-                        scsi_deactivate_tcq(sdev, sdev->queue_depth);
-        } else
-                qtype = 0;
+        qtype = scsi_change_queue_type(sdev, qtype);
         if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) {
                 const char *cp;