diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c
index 177d47e92e49..5d08bdbcf70a 100644
--- a/drivers/scsi/qla2xxx/qla_dfs.c
+++ b/drivers/scsi/qla2xxx/qla_dfs.c
@@ -510,7 +510,9 @@ qla2x00_dfs_fce_write(struct file *file, const char __user *buffer,
 		return PTR_ERR(buf);
 	}
 
-	enable = kstrtoul(buf, 0, 0);
+	rc = kstrtoul(buf, 0, &enable);
+	if (rc)
+		goto out_free;
 	rc = count;
 
 	mutex_lock(&ha->fce_mutex);