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path: root/drivers/ata/pata_sis.c
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Diffstat (limited to 'drivers/ata/pata_sis.c')
-rw-r--r--drivers/ata/pata_sis.c32
1 files changed, 30 insertions, 2 deletions
diff --git a/drivers/ata/pata_sis.c b/drivers/ata/pata_sis.c
index c434c4ef4e4b..d9486fcd59f2 100644
--- a/drivers/ata/pata_sis.c
+++ b/drivers/ata/pata_sis.c
@@ -43,6 +43,34 @@ struct sis_chipset {
up code later */
};
+struct sis_laptop {
+ u16 device;
+ u16 subvendor;
+ u16 subdevice;
+};
+
+static const struct sis_laptop sis_laptop[] = {
+ /* devid, subvendor, subdev */
+ { 0x5513, 0x1043, 0x1107 }, /* ASUS A6K */
+ /* end marker */
+ { 0, }
+};
+
+static int sis_short_ata40(struct pci_dev *dev)
+{
+ const struct sis_laptop *lap = &sis_laptop[0];
+
+ while (lap->device) {
+ if (lap->device == dev->device &&
+ lap->subvendor == dev->subsystem_vendor &&
+ lap->subdevice == dev->subsystem_device)
+ return 1;
+ lap++;
+ }
+
+ return 0;
+}
+
/**
* sis_port_base - return PCI configuration base for dev
* @adev: device
@@ -79,7 +107,7 @@ static int sis_133_pre_reset(struct ata_port *ap)
/* The top bit of this register is the cable detect bit */
pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp);
- if (tmp & 0x8000)
+ if ((tmp & 0x8000) && !sis_short_ata40(pdev))
ap->cbl = ATA_CBL_PATA40;
else
ap->cbl = ATA_CBL_PATA80;
@@ -127,7 +155,7 @@ static int sis_66_pre_reset(struct ata_port *ap)
/* Older chips keep cable detect in bits 4/5 of reg 0x48 */
pci_read_config_byte(pdev, 0x48, &tmp);
tmp >>= ap->port_no;
- if (tmp & 0x10)
+ if ((tmp & 0x10) && !sis_short_ata40(pdev))
ap->cbl = ATA_CBL_PATA40;
else
ap->cbl = ATA_CBL_PATA80;