[SCSI] zfcp: Dont block zfcp_wq with scan
When running the scsi_scan from the zfcp workqueue and the target
device does not respond, the zfcp workqueue can block until the
scsi_scan hits a timeout. Move the work to the scsi host workqueue,
since this one is also used for the scan from the SCSI midlayer.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 58201e1..5b11386 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -583,6 +583,23 @@
}
+void zfcp_scsi_scan(struct work_struct *work)
+{
+ struct zfcp_unit *unit = container_of(work, struct zfcp_unit,
+ scsi_work);
+ struct fc_rport *rport;
+
+ flush_work(&unit->port->rport_work);
+ rport = unit->port->rport;
+
+ if (rport && rport->port_state == FC_PORTSTATE_ONLINE)
+ scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
+ scsilun_to_int((struct scsi_lun *)
+ &unit->fcp_lun), 0);
+
+ zfcp_unit_put(unit);
+}
+
struct fc_function_template zfcp_transport_functions = {
.show_starget_port_id = 1,
.show_starget_port_name = 1,