[PATCH 1/8] dtc2278: fix ->io_32bit handling

Bartlomiej Zolnierkiewicz
2008-01-06T16:51:28Z

On DTC2278 32-bit I/O has to be enabled for both devices on the port
so always enable it during init time and disallow further changes.

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/ide.c | 4 ----
drivers/ide/legacy/dtc2278.c | 12 ++++++------
2 files changed, 6 insertions(+), 10 deletions(-)

Index: b/drivers/ide/ide.c
===================================================================
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -791,10 +791,6 @@ int set_io_32bit(ide_drive_t *drive, int
return -EBUSY;

drive->io_32bit = arg;
-#ifdef CONFIG_BLK_DEV_DTC2278
- if (HWIF(drive)->chipset == ide_dtc2278)
- HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
-#endif /* CONFIG_BLK_DEV_DTC2278 */

spin_unlock_irq(&ide_lock);

Index: b/drivers/ide/legacy/dtc2278.c
===================================================================
--- a/drivers/ide/legacy/dtc2278.c
+++ b/drivers/ide/legacy/dtc2278.c
@@ -84,12 +84,6 @@ static void dtc2278_set_pio_mode(ide_dri
/* Actually we do - there is a data sheet available for the
Winbond but does anyone actually care */
}
-
- /*
- * 32bit I/O has to be enabled for *both* drives at the same time.
- */
- drive->io_32bit = 1;
- HWIF(drive)->drives[!drive->select.b.unit].io_32bit = 1;
}

static int __init dtc2278_probe(void)
@@ -123,18 +117,24 @@ static int __init dtc2278_probe(void)
local_irq_restore(flags);

hwif->serialized = 1;
+ hwif->no_io_32bit = 1; /* disallow ->io_32bit changes */
hwif->chipset = ide_dtc2278;
hwif->pio_mask = ATA_PIO4;
hwif->set_pio_mode = &dtc2278_set_pio_mode;
hwif->drives[0].no_unmask = 1;
hwif->drives[1].no_unmask = 1;
+ hwif->drives[0].io_32bit = 1;
+ hwif->drives[1].io_32bit = 1;
hwif->mate = mate;

mate->serialized = 1;
+ mate->no_io_32bit = 1;
mate->chipset = ide_dtc2278;
mate->pio_mask = ATA_PIO4;
mate->drives[0].no_unmask = 1;
mate->drives[1].no_unmask = 1;
+ mate->drives[0].io_32bit = 1;
+ mate->drives[1].io_32bit = 1;
mate->mate = hwif;
mate->channel = 1;