scsi: fnic: print port speed only at driver init or speed change

Port speed printing was added by commit d948e63 ("scsi: fnic: Add port
speed stat to fnic debug stats"). As currently configured, this will cause
the port speed to be printed to syslog every 2 seconds. To prevent log
spamming, only print the vnic port speed at driver initialization and if
the speed changes. Also clean up a small typo in fnic_trace.c.

Fixes: d948e63 ("scsi: fnic: Add port speed stat to fnic debug stats")
Signed-off-by: John Pittman <jpittman@redhat.com>
Reviewed-by: Satish Kharat <satishkh@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/fnic/fnic_fcs.c

@@ -52,6 +52,7 @@ void fnic_handle_link(struct work_struct *work)
 	unsigned long flags;
 	int old_link_status;
 	u32 old_link_down_cnt;
+	u64 old_port_speed, new_port_speed;
 
 	spin_lock_irqsave(&fnic->fnic_lock, flags);
 
@@ -62,14 +63,19 @@ void fnic_handle_link(struct work_struct *work)
 
 	old_link_down_cnt = fnic->link_down_cnt;
 	old_link_status = fnic->link_status;
+	old_port_speed = atomic64_read(
+			&fnic->fnic_stats.misc_stats.current_port_speed);
+
 	fnic->link_status = vnic_dev_link_status(fnic->vdev);
 	fnic->link_down_cnt = vnic_dev_link_down_cnt(fnic->vdev);
 
+	new_port_speed = vnic_dev_port_speed(fnic->vdev);
 	atomic64_set(&fnic->fnic_stats.misc_stats.current_port_speed,
-			vnic_dev_port_speed(fnic->vdev));
-	shost_printk(KERN_INFO, fnic->lport->host, "Current vnic speed set to :  %llu\n",
-			(u64)atomic64_read(
-			&fnic->fnic_stats.misc_stats.current_port_speed));
+			new_port_speed);
+	if (old_port_speed != new_port_speed)
+		shost_printk(KERN_INFO, fnic->lport->host,
+				"Current vnic speed set to :  %llu\n",
+				new_port_speed);
 
 	switch (vnic_dev_port_speed(fnic->vdev)) {
 	case DCEM_PORTSPEED_10G:

drivers/scsi/fnic/fnic_trace.c

@@ -453,7 +453,7 @@ int fnic_get_stats_data(struct stats_debug_info *debug,
 		  (u64)atomic64_read(&stats->misc_stats.frame_errors));
 
 	len += snprintf(debug->debug_buffer + len, buf_size - len,
-			"Firmware reported port seed: %llu\n",
+			"Firmware reported port speed: %llu\n",
 			(u64)atomic64_read(
 				&stats->misc_stats.current_port_speed));