diff options
| author | Sergei Shtylyov <sshtylyov@ru.mvista.com> | 2009-04-14 18:39:14 +0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2009-04-16 15:21:15 -0400 |
| commit | 265b7215aed36941620b65ecfff516200fb190c1 (patch) | |
| tree | 3524f0bfacaede8f9a864128843c6b19c7a24839 /drivers | |
| parent | 79b42babbac2a5a522b8e269fb2811b6e1063030 (diff) | |
| download | op-kernel-dev-265b7215aed36941620b65ecfff516200fb190c1.zip op-kernel-dev-265b7215aed36941620b65ecfff516200fb190c1.tar.gz | |
pata_hpt37x: fix HPT370 DMA timeouts
The libata driver has copied the code from the IDE driver which caused a post
2.4.18 regression on many HPT370[A] chips -- DMA stopped to work completely,
only causing timeouts. Now remove hpt370_bmdma_start() for good...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/pata_hpt37x.c | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c index 81ab5700..122c786 100644 --- a/drivers/ata/pata_hpt37x.c +++ b/drivers/ata/pata_hpt37x.c @@ -8,7 +8,7 @@ * Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org> * Portions Copyright (C) 2001 Sun Microsystems, Inc. * Portions Copyright (C) 2003 Red Hat Inc - * Portions Copyright (C) 2005-2007 MontaVista Software, Inc. + * Portions Copyright (C) 2005-2009 MontaVista Software, Inc. * * TODO * Look into engine reset on timeout errors. Should not be required. @@ -24,7 +24,7 @@ #include <linux/libata.h> #define DRV_NAME "pata_hpt37x" -#define DRV_VERSION "0.6.11" +#define DRV_VERSION "0.6.12" struct hpt_clock { u8 xfer_speed; @@ -445,23 +445,6 @@ static void hpt370_set_dmamode(struct ata_port *ap, struct ata_device *adev) } /** - * hpt370_bmdma_start - DMA engine begin - * @qc: ATA command - * - * The 370 and 370A want us to reset the DMA engine each time we - * use it. The 372 and later are fine. - */ - -static void hpt370_bmdma_start(struct ata_queued_cmd *qc) -{ - struct ata_port *ap = qc->ap; - struct pci_dev *pdev = to_pci_dev(ap->host->dev); - pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37); - udelay(10); - ata_bmdma_start(qc); -} - -/** * hpt370_bmdma_end - DMA engine stop * @qc: ATA command * @@ -598,7 +581,6 @@ static struct scsi_host_template hpt37x_sht = { static struct ata_port_operations hpt370_port_ops = { .inherits = &ata_bmdma_port_ops, - .bmdma_start = hpt370_bmdma_start, .bmdma_stop = hpt370_bmdma_stop, .mode_filter = hpt370_filter, |
