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-rw-r--r--drivers/ata/libata-core.c1
-rw-r--r--drivers/ata/pata_it821x.c4
-rw-r--r--drivers/ata/pata_via.c14
3 files changed, 16 insertions, 3 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index a3ee087..c43de9a 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -6035,6 +6035,7 @@ void ata_dev_init(struct ata_device *dev)
*/
spin_lock_irqsave(ap->lock, flags);
dev->flags &= ~ATA_DFLAG_INIT_MASK;
+ dev->horkage = 0;
spin_unlock_irqrestore(ap->lock, flags);
memset((void *)dev + ATA_DEVICE_CLEAR_OFFSET, 0,
diff --git a/drivers/ata/pata_it821x.c b/drivers/ata/pata_it821x.c
index ed637ae..5d8b91e 100644
--- a/drivers/ata/pata_it821x.c
+++ b/drivers/ata/pata_it821x.c
@@ -533,6 +533,10 @@ static int it821x_check_atapi_dma(struct ata_queued_cmd *qc)
struct ata_port *ap = qc->ap;
struct it821x_dev *itdev = ap->private_data;
+ /* Only use dma for transfers to/from the media. */
+ if (qc->nbytes < 2048)
+ return -EOPNOTSUPP;
+
/* No ATAPI DMA in smart mode */
if (itdev->smart)
return -EOPNOTSUPP;
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c
index ea18e33..636c4f1 100644
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -97,6 +97,7 @@ static const struct via_isa_bridge {
u8 rev_max;
u16 flags;
} via_isa_bridges[] = {
+ { "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
{ "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
{ "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
{ "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
@@ -243,7 +244,6 @@ static void via_do_set_mode(struct ata_port *ap, struct ata_device *adev, int mo
int ut;
int offset = 3 - (2*ap->port_no) - adev->devno;
-
/* Calculate the timing values we require */
ata_timing_compute(adev, mode, &t, T, UT);
@@ -290,9 +290,17 @@ static void via_do_set_mode(struct ata_port *ap, struct ata_device *adev, int mo
ut = t.udma ? (0xe0 | (FIT(t.udma, 2, 9) - 2)) : 0x07;
break;
}
+
/* Set UDMA unless device is not UDMA capable */
- if (udma_type)
- pci_write_config_byte(pdev, 0x50 + offset, ut);
+ if (udma_type) {
+ u8 cable80_status;
+
+ /* Get 80-wire cable detection bit */
+ pci_read_config_byte(pdev, 0x50 + offset, &cable80_status);
+ cable80_status &= 0x10;
+
+ pci_write_config_byte(pdev, 0x50 + offset, ut | cable80_status);
+ }
}
static void via_set_piomode(struct ata_port *ap, struct ata_device *adev)

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