ide-cd: remove ide_cd_drain_data and ide_cd_pad_transfer

Use the generic ide_pad_transfer() helper instead.

[bart: fixup ide_cd_drain_data() -> ide_pad_transfer() conversion]
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-cd.c

@@ -598,28 +598,6 @@ static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
 	return ide_started;
 }
 
-/*
- * Block read functions.
- */
-static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len)
-{
-	while (len > 0) {
-		int dum = 0;
-		xf(drive, NULL, &dum, sizeof(dum));
-		len -= sizeof(dum);
-	}
-}
-
-static void ide_cd_drain_data(ide_drive_t *drive, int nsects)
-{
-	while (nsects > 0) {
-		static char dum[SECTOR_SIZE];
-
-		drive->hwif->input_data(drive, NULL, dum, sizeof(dum));
-		nsects--;
-	}
-}
-
 /*
  * Check the contents of the interrupt reason register from the cdrom
  * and attempt to recover if there are problems.  Returns  0 if everything's
@@ -635,15 +613,12 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
 	if (ireason == (!rw << 1))
 		return 0;
 	else if (ireason == (rw << 1)) {
-		ide_hwif_t *hwif = drive->hwif;
-		xfer_func_t *xf;
 
 		/* whoops... */
 		printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
 				drive->name, __func__);
 
-		xf = rw ? hwif->output_data : hwif->input_data;
-		ide_cd_pad_transfer(drive, xf, len);
+		ide_pad_transfer(drive, rw, len);
 	} else  if (rw == 0 && ireason == 1) {
 		/*
 		 * Some drives (ASUS) seem to tell us that status info is
@@ -1006,7 +981,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 					   - bio_cur_sectors(rq->bio),
 					   thislen >> 9);
 			if (nskip > 0) {
-				ide_cd_drain_data(drive, nskip);
+				ide_pad_transfer(drive, write, nskip << 9);
 				rq->current_nr_sectors -= nskip;
 				thislen -= (nskip << 9);
 			}
@@ -1043,7 +1018,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 				 * If the buffers are full, pipe the rest into
 				 * oblivion.
 				 */
-				ide_cd_drain_data(drive, thislen >> 9);
+				ide_pad_transfer(drive, 0, thislen);
 			else {
 				printk(KERN_ERR "%s: confused, missing data\n",
 						drive->name);
@@ -1091,7 +1066,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 
 	/* pad, if necessary */
 	if (!blk_fs_request(rq) && len > 0)
-		ide_cd_pad_transfer(drive, xferfunc, len);
+		ide_pad_transfer(drive, write, len);
 
 	if (blk_pc_request(rq)) {
 		timeout = rq->timeout;