[SCSI] fnic: Remove QUEUE_FULL handling code

Remove fnic driver QUEUE_FULL handling code instead let SCSI mid layer
handle queue full and use its algorithm to ramp down/up queue

Signed-off-by: Suma Ramars <sramars@cisco.com>
Signed-off-by: Hiral Patel <hiralpat@cisco.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
index a97e6e584f8cfed52b9ef8dd8dd65b006b605558..4ff0a332f29812a536529f48c1cfc4251b154ac6 100644 (file)
--- a/drivers/scsi/fnic/fnic_scsi.c
+++ b/drivers/scsi/fnic/fnic_scsi.c
@@ -818,38 +818,6 @@ static void fnic_fcpio_icmnd_cmpl_handler(struct fnic *fnic,
                if (icmnd_cmpl->flags & FCPIO_ICMND_CMPL_RESID_UNDER)
                        xfer_len -= icmnd_cmpl->residual;
 
-               /*
-                * If queue_full, then try to reduce queue depth for all
-                * LUNS on the target. Todo: this should be accompanied
-                * by a periodic queue_depth rampup based on successful
-                * IO completion.
-                */
-               if (icmnd_cmpl->scsi_status == QUEUE_FULL) {
-                       struct scsi_device *t_sdev;
-                       int qd = 0;
-
-                       shost_for_each_device(t_sdev, sc->device->host) {
-                               if (t_sdev->id != sc->device->id)
-                                       continue;
-
-                               if (t_sdev->queue_depth > 1) {
-                                       qd = scsi_track_queue_full
-                                               (t_sdev,
-                                                t_sdev->queue_depth - 1);
-                                       if (qd == -1)
-                                               qd = t_sdev->host->cmd_per_lun;
-                                       shost_printk(KERN_INFO,
-                                                    fnic->lport->host,
-                                                    "scsi[%d:%d:%d:%d"
-                                                    "] queue full detected,"
-                                                    "new depth = %d\n",
-                                                    t_sdev->host->host_no,
-                                                    t_sdev->channel,
-                                                    t_sdev->id, t_sdev->lun,
-                                                    t_sdev->queue_depth);
-                               }
-                       }
-               }
                break;
 
        case FCPIO_TIMEOUT:          /* request was timed out */