Signed-off-by: Alan Cox <[email protected]>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.20-rc6-mm3/drivers/ata/pata_atiixp.c linux-2.6.20-rc6-mm3/drivers/ata/pata_atiixp.c
--- linux.vanilla-2.6.20-rc6-mm3/drivers/ata/pata_atiixp.c 2007-01-31 14:20:10.000000000 +0000
+++ linux-2.6.20-rc6-mm3/drivers/ata/pata_atiixp.c 2007-01-31 15:05:11.000000000 +0000
@@ -36,15 +36,22 @@
static int atiixp_pre_reset(struct ata_port *ap)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
- static struct pci_bits atiixp_enable_bits[] = {
+ static const struct pci_bits atiixp_enable_bits[] = {
{ 0x48, 1, 0x01, 0x00 },
{ 0x48, 1, 0x08, 0x00 }
};
+ u8 udma;
if (!pci_test_config_bits(pdev, &atiixp_enable_bits[ap->port_no]))
return -ENOENT;
- ap->cbl = ATA_CBL_PATA80;
+ /* Hack from drivers/ide/pci. Really we want to know how to do the
+ raw detection not play follow the bios mode guess */
+ pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ap->port_no, &udma);
+ if ((udma & 0x07) >= 0x04 || (udma & 0x70) >= 0x40)
+ ap->cbl = ATA_CBL_PATA80;
+ else
+ ap->cbl = ATA_CBL_PATA40;
return ata_std_prereset(ap);
}
-
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