ide: convert 'pio_mode' device setting to use DS_SYNC flag

* Convert 'pio_mode' device setting to use DS_SYNC flag.

* Remove unused special_t.b.{set_tune,serviced} and ide_drive_t.tune_req.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 5 insertions, 63 deletions

diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index ecfb87c1009..ec709269c06 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -543,30 +543,6 @@ static ide_startstop_t ide_disk_special(ide_drive_t *drive)
 	return ide_started;
 }
 
-/*
- * handle HDIO_SET_PIO_MODE ioctl abusers here, eventually it will go away
- */
-static int set_pio_mode_abuse(ide_hwif_t *hwif, u8 req_pio)
-{
-	switch (req_pio) {
-	case 202:
-	case 201:
-	case 200:
-	case 102:
-	case 101:
-	case 100:
-		return (hwif->host_flags & IDE_HFLAG_ABUSE_DMA_MODES) ? 1 : 0;
-	case 9:
-	case 8:
-		return (hwif->host_flags & IDE_HFLAG_ABUSE_PREFETCH) ? 1 : 0;
-	case 7:
-	case 6:
-		return (hwif->host_flags & IDE_HFLAG_ABUSE_FAST_DEVSEL) ? 1 : 0;
-	default:
-		return 0;
-	}
-}
-
 /**
  *	do_special		-	issue some special commands
  *	@drive: drive the command is for
@@ -584,46 +560,12 @@ static ide_startstop_t do_special (ide_drive_t *drive)
 #ifdef DEBUG
 	printk("%s: do_special: 0x%02x\n", drive->name, s->all);
 #endif
-	if (s->b.set_tune) {
-		ide_hwif_t *hwif = drive->hwif;
-		const struct ide_port_ops *port_ops = hwif->port_ops;
-		u8 req_pio = drive->tune_req;
-
-		s->b.set_tune = 0;
-
-		if (set_pio_mode_abuse(drive->hwif, req_pio)) {
-			/*
-			 * take ide_lock for IDE_DFLAG_[NO_]UNMASK/[NO_]IO_32BIT
-			 */
-			if (req_pio == 8 || req_pio == 9) {
-				unsigned long flags;
-
-				spin_lock_irqsave(&ide_lock, flags);
-				port_ops->set_pio_mode(drive, req_pio);
-				spin_unlock_irqrestore(&ide_lock, flags);
-			} else
-				port_ops->set_pio_mode(drive, req_pio);
-		} else {
-			int keep_dma =
-				!!(drive->dev_flags & IDE_DFLAG_USING_DMA);
-
-			ide_set_pio(drive, req_pio);
-
-			if (hwif->host_flags & IDE_HFLAG_SET_PIO_MODE_KEEP_DMA) {
-				if (keep_dma)
-					ide_dma_on(drive);
-			}
-		}
-
-		return ide_stopped;
-	} else {
-		if (drive->media == ide_disk)
-			return ide_disk_special(drive);
+	if (drive->media == ide_disk)
+		return ide_disk_special(drive);
 
-		s->all = 0;
-		drive->mult_req = 0;
-		return ide_stopped;
-	}
+	s->all = 0;
+	drive->mult_req = 0;
+	return ide_stopped;
 }
 
 void ide_map_sg(ide_drive_t *drive, struct request *rq)