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Commit 42e62a74 authored by Christof Schmitt's avatar Christof Schmitt Committed by James Bottomley
Browse files

[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: default avatarChristof 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: default avatarVasu Dev <vasu.dev@intel.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent 229b8d72

drivers/s390/scsi/zfcp_scsi.c

+12 −3
Original line number Diff line number Diff line
@@ -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)

		return -EOPNOTSUPP;



	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;

	}

	return sdev->queue_depth;

}