}
 
 static u32
-vidtv_psi_table_header_write_into(struct header_write_args args)
+vidtv_psi_table_header_write_into(struct header_write_args *args)
 {
-       struct psi_write_args psi_args = {};
-       /* the number of bytes written by this function */
-       u32 nbytes = 0;
-
-       psi_args.dest_buf           = args.dest_buf;
-       psi_args.from               = args.h;
-       psi_args.len                = sizeof(struct vidtv_psi_table_header);
-       psi_args.dest_offset        = args.dest_offset;
-       psi_args.pid                = args.pid;
-       psi_args.new_psi_section    = true;
-       psi_args.continuity_counter = args.continuity_counter;
-       psi_args.is_crc             = false;
-       psi_args.dest_buf_sz        = args.dest_buf_sz;
-       psi_args.crc                = args.crc;
-
-       nbytes += vidtv_psi_ts_psi_write_into(&psi_args);
+       struct psi_write_args psi_args = {
+               .dest_buf           = args->dest_buf,
+               .from               = args->h,
+               .len                = sizeof(struct vidtv_psi_table_header),
+               .dest_offset        = args->dest_offset,
+               .pid                = args->pid,
+               .new_psi_section    = true,
+               .continuity_counter = args->continuity_counter,
+               .is_crc             = false,
+               .dest_buf_sz        = args->dest_buf_sz,
+               .crc                = args->crc,
+       };
 
-       return nbytes;
+       return vidtv_psi_ts_psi_write_into(&psi_args);
 }
 
 void
        h_args.dest_buf_sz        = args.buf_sz;
        h_args.crc = &crc;
 
-       nbytes += vidtv_psi_table_header_write_into(h_args);
+       nbytes += vidtv_psi_table_header_write_into(&h_args);
 
        /* note that the field 'u16 programs' is not really part of the PAT */
 
        h_args.dest_buf_sz        = args.buf_sz;
        h_args.crc                = &crc;
 
-       nbytes += vidtv_psi_table_header_write_into(h_args);
+       nbytes += vidtv_psi_table_header_write_into(&h_args);
 
        /* write the two bitfields */
        psi_args.dest_buf = args.buf;
        h_args.dest_buf_sz        = args.buf_sz;
        h_args.crc                = &crc;
 
-       nbytes += vidtv_psi_table_header_write_into(h_args);
+       nbytes += vidtv_psi_table_header_write_into(&h_args);
 
        psi_args.dest_buf = args.buf;
        psi_args.from     = &args.sdt->network_id;
        h_args.dest_buf_sz        = args.buf_sz;
        h_args.crc                = &crc;
 
-       nbytes += vidtv_psi_table_header_write_into(h_args);
+       nbytes += vidtv_psi_table_header_write_into(&h_args);
 
        /* write the bitfield */
        psi_args.dest_buf = args.buf;
        h_args.dest_buf_sz        = args.buf_sz;
        h_args.crc                = &crc;
 
-       nbytes += vidtv_psi_table_header_write_into(h_args);
+       nbytes += vidtv_psi_table_header_write_into(&h_args);
 
        psi_args.dest_buf = args.buf;
        psi_args.from     = &args.eit->transport_id;