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[SCSI] zfcp: Adapt change_queue_depth for queue full tracking 

Adapt the change_queue_depth callback in zfcp for the new reason
parameter. Simply pass each call back to the SCSI midlayer, there are
no resource adjustments necessary for zfcp.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>

Removes check for (depth <= default_depth) in case of
SCSI_QDEPTH_RAMP_UP call back, not needed after added
max_queue_depth per sdev.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Christof Schmitt 2009-10-15 17:47:11 -07:00 committed by James Bottomley
parent 229b8d72f3
commit 42e62a7437
1 changed files with 12 additions and 3 deletions
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15
drivers/s390/scsi/zfcp_scsi.c
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@ -32,10 +32,19 @@ char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *fcp_rsp_iu)
static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth,
int reason)
{
if (reason != SCSI_QDEPTH_DEFAULT)
switch (reason) {
case SCSI_QDEPTH_DEFAULT:
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
break;
case SCSI_QDEPTH_QFULL:
scsi_track_queue_full(sdev, depth);
break;
case SCSI_QDEPTH_RAMP_UP:
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
break;
default:
return -EOPNOTSUPP;
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
}
return sdev->queue_depth;
}