[SCSI] libfc: change to make remote port callback optional

Since the rport list maintenance is now done in the rport module,
the callback (and ops) are usually not necessary.

Allow rdata->ops to be left NULL if nothing needs
to be done in an event callback.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
index 29bb6fd10036..406049c13a0e 100644
--- a/drivers/scsi/libfc/fc_rport.c
+++ b/drivers/scsi/libfc/fc_rport.c
@@ -250,7 +250,7 @@ static void fc_rport_work(struct work_struct *work)
                 rp->r_a_tov = rdata->r_a_tov;
                 mutex_unlock(&rdata->rp_mutex);
 
-                if (rport_ops->event_callback) {
+                if (rport_ops && rport_ops->event_callback) {
                         FC_RPORT_DBG(rdata, "callback ev %d\n", event);
                         rport_ops->event_callback(lport, rdata, event);
                 }
@@ -269,7 +269,7 @@ static void fc_rport_work(struct work_struct *work)
                         mutex_unlock(&lport->disc.disc_mutex);
                 }
 
-                if (rport_ops->event_callback) {
+                if (rport_ops && rport_ops->event_callback) {
                         FC_RPORT_DBG(rdata, "callback ev %d\n", event);
                         rport_ops->event_callback(lport, rdata, event);
                 }