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scsi: remove ->change_queue_type method

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Since we got rid of ordered tag support in 2010 the prime use case of
switching on and off ordered tags has been obsolete.  The other function
of enabling/disabling tagging entirely has only been correctly implemented
by the 53c700 driver and isn't generally useful.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com
Reviewed-by: Hannes Reinecke <hare@suse.de>
This commit is contained in:
Christoph Hellwig
2014-11-24 15:36:18 +01:00
parent 79855d1785
commit efc3c1df5f
25 changed files with 4 additions and 171 deletions
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27
drivers/scsi/scsi_debug.c
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@@ -4987,32 +4987,6 @@ sdebug_change_qdepth(struct scsi_device *sdev, int qdepth)
return sdev->queue_depth;
}
static int
sdebug_change_qtype(struct scsi_device *sdev, int qtype)
{
qtype = scsi_change_queue_type(sdev, qtype);
if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) {
const char *cp;
switch (qtype) {
case 0:
cp = "untagged";
break;
case MSG_SIMPLE_TAG:
cp = "simple tags";
break;
case MSG_ORDERED_TAG:
cp = "ordered tags";
break;
default:
cp = "unknown";
break;
}
sdev_printk(KERN_INFO, sdev, "%s: to %s\n", __func__, cp);
}
return qtype;
}
static int
check_inject(struct scsi_cmnd *scp)
{
@@ -5212,7 +5186,6 @@ static struct scsi_host_template sdebug_driver_template = {
.ioctl = scsi_debug_ioctl,
.queuecommand = sdebug_queuecommand_lock_or_not,
.change_queue_depth = sdebug_change_qdepth,
.change_queue_type = sdebug_change_qtype,
.eh_abort_handler = scsi_debug_abort,
.eh_device_reset_handler = scsi_debug_device_reset,
.eh_target_reset_handler = scsi_debug_target_reset,