[SCSI] libfc: don't exch_done() on invalid sequence ptr

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / scsi / libfc / fc_lport.c

diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c
index ca278d4..d385d11 100644 (file)
--- a/drivers/scsi/libfc/fc_lport.c
+++ b/drivers/scsi/libfc/fc_lport.c
@@ -980,7 +980,8 @@ drop:
        rcu_read_unlock();
        FC_LPORT_DBG(lport, "dropping unexpected frame type %x\n", fh->fh_type);
        fc_frame_free(fp);
-       lport->tt.exch_done(sp);
+       if (sp)
+               lport->tt.exch_done(sp);
 }
 
 /**