mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 05:48:40 +00:00
pata_via: Handle laptops via DMI
Oh the joy of saving a fraction of a cent using short 40 wire cables and not faking 80wire Teach the VIA driver that there are some systems we need to know are magically wired for high speeds. Signed-off-by: Alan Cox <alan@redhat.com> Tested-by: Francis Russell <FrancisRussell@btinternet.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
parent
6dffaf61e2
commit
cf5792d20c
1 changed files with 29 additions and 0 deletions
|
@ -60,6 +60,7 @@
|
|||
#include <linux/delay.h>
|
||||
#include <scsi/scsi_host.h>
|
||||
#include <linux/libata.h>
|
||||
#include <linux/dmi.h>
|
||||
|
||||
#define DRV_NAME "pata_via"
|
||||
#define DRV_VERSION "0.3.1"
|
||||
|
@ -122,6 +123,31 @@ static const struct via_isa_bridge {
|
|||
{ NULL }
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* Cable special cases
|
||||
*/
|
||||
|
||||
static struct dmi_system_id cable_dmi_table[] = {
|
||||
{
|
||||
.ident = "Acer Ferrari 3400",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_BOARD_VENDOR, "Acer,Inc."),
|
||||
DMI_MATCH(DMI_BOARD_NAME, "Ferrari 3400"),
|
||||
},
|
||||
},
|
||||
{ }
|
||||
};
|
||||
|
||||
static int via_cable_override(struct pci_dev *pdev)
|
||||
{
|
||||
/* Systems by DMI */
|
||||
if (dmi_check_system(cable_dmi_table))
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* via_cable_detect - cable detection
|
||||
* @ap: ATA port
|
||||
|
@ -139,6 +165,9 @@ static int via_cable_detect(struct ata_port *ap) {
|
|||
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
||||
u32 ata66;
|
||||
|
||||
if (via_cable_override(pdev))
|
||||
return ATA_CBL_PATA40_SHORT;
|
||||
|
||||
/* Early chips are 40 wire */
|
||||
if ((config->flags & VIA_UDMA) < VIA_UDMA_66)
|
||||
return ATA_CBL_PATA40;
|
||||
|
|
Loading…
Reference in a new issue