scsi: libfc: fix null pointer dereference on a null lport

Currently if lport is null then the null lport pointer is dereference when
printing out debug via the FC_LPORT_DB macro. Fix this by using the more
generic FC_LIBFC_DBG debug macro instead that does not use lport.

Addresses-Coverity: ("Dereference after null check")
Fixes: 7414705ea4ae ("libfc: Add runtime debugging with debug_logging module parameter")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index 025cd2ff9f65..0c87b9777c3a 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -2591,7 +2591,7 @@ void fc_exch_recv(struct fc_lport *lport, struct fc_frame *fp)
 
         /* lport lock ? */
         if (!lport || lport->state == LPORT_ST_DISABLED) {
-                FC_LPORT_DBG(lport, "Receiving frames for an lport that "
+                FC_LIBFC_DBG("Receiving frames for an lport that "
                              "has not been initialized correctly\n");
                 fc_frame_free(fp);
                 return;