Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=36beb82390235236c60eb97ca526b1cad97e2df3
Commit: 36beb82390235236c60eb97ca526b1cad97e2df3
Parent: 152af05cc85119d294b977ab4de07a781795c298
Author: Alan Cox <[EMAIL PROTECTED]>
AuthorDate: Mon Nov 5 15:04:40 2007 +0000
Committer: Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Mon Nov 5 18:08:46 2007 -0500
pata_serverworks: Fix problem with some drive combinations
The driver used the channel not the device number for deciding where to
load some timing parameters. Also change so that we clear the UDMA field
as the old driver did. Not believed neccessary but does no harm.
Signed-off-by: Alan Cox <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
drivers/ata/pata_serverworks.c | 11 +++++------
1 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/ata/pata_serverworks.c b/drivers/ata/pata_serverworks.c
index df68806..8bed888 100644
--- a/drivers/ata/pata_serverworks.c
+++ b/drivers/ata/pata_serverworks.c
@@ -274,28 +274,27 @@ static void serverworks_set_dmamode(struct ata_port *ap,
struct ata_device *adev
{
static const u8 dma_mode[] = { 0x77, 0x21, 0x20 };
int offset = 1 + 2 * ap->port_no - adev->devno;
- int devbits = (2 * ap->port_no + adev->devno);
+ int devbits = 2 * ap->port_no + adev->devno;
u8 ultra;
u8 ultra_cfg;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
pci_read_config_byte(pdev, 0x54, &ultra_cfg);
+ pci_read_config_byte(pdev, 0x56 + ap->port_no, &ultra);
+ ultra &= ~(0x0F << (adev->devno * 4));
if (adev->dma_mode >= XFER_UDMA_0) {
pci_write_config_byte(pdev, 0x44 + offset, 0x20);
- pci_read_config_byte(pdev, 0x56 + ap->port_no, &ultra);
- ultra &= ~(0x0F << (ap->port_no * 4));
ultra |= (adev->dma_mode - XFER_UDMA_0)
- << (ap->port_no * 4);
- pci_write_config_byte(pdev, 0x56 + ap->port_no, ultra);
-
+ << (adev->devno * 4);
ultra_cfg |= (1 << devbits);
} else {
pci_write_config_byte(pdev, 0x44 + offset,
dma_mode[adev->dma_mode - XFER_MW_DMA_0]);
ultra_cfg &= ~(1 << devbits);
}
+ pci_write_config_byte(pdev, 0x56 + ap->port_no, ultra);
pci_write_config_byte(pdev, 0x54, ultra_cfg);
}
-
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