[SCSI] fnic: do not reset dev_loss_tmo in slave callout

This fixes a bug where the driver was resetting the
rport dev_loss_tmo when devices were added by adding
support for the get_host_def_dev_loss_tmo callout.

Patch has only been compile tested.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/fnic/fnic_main.c

@@ -80,17 +80,13 @@ static struct libfc_function_template fnic_transport_template = {
 static int fnic_slave_alloc(struct scsi_device *sdev)
 {
 	struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
-	struct fc_lport *lp = shost_priv(sdev->host);
-	struct fnic *fnic = lport_priv(lp);
 
 	sdev->tagged_supported = 1;
 
 	if (!rport || fc_remote_port_chkready(rport))
 		return -ENXIO;
 
 	scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH);
-	rport->dev_loss_tmo = fnic->config.port_down_timeout / 1000;
-
 	return 0;
 }
 
@@ -113,6 +109,15 @@ static struct scsi_host_template fnic_host_template = {
 	.shost_attrs = fnic_attrs,
 };
 
+static void
+fnic_get_host_def_loss_tmo(struct Scsi_Host *shost)
+{
+	struct fc_lport *lp = shost_priv(shost);
+	struct fnic *fnic = lport_priv(lp);
+
+	fc_host_def_dev_loss_tmo(shost) = fnic->config.port_down_timeout / 1000;
+}
+
 static void fnic_get_host_speed(struct Scsi_Host *shost);
 static struct scsi_transport_template *fnic_fc_transport;
 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
@@ -142,6 +147,7 @@ static struct fc_function_template fnic_fc_functions = {
 	.show_rport_dev_loss_tmo = 1,
 	.issue_fc_host_lip = fnic_reset,
 	.get_fc_host_stats = fnic_get_stats,
+	.get_host_def_dev_loss_tmo = fnic_get_host_def_loss_tmo,
 	.dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
 	.terminate_rport_io = fnic_terminate_rport_io,
 	.bsg_request = fc_lport_bsg_request,