+ case PCI_VENDOR_ID_ATI:
+ /* SB700 old version has a bug in EHCI controller,
+ * which causes usb devices lose response in some cases.
+ */
+ if (pdev->device == 0x4396) {
+ p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
+ PCI_DEVICE_ID_ATI_SBX00_SMBUS,
+ NULL);
+ if (!p_smbus)
+ break;
+ rev = p_smbus->revision;
+ if ((rev == 0x3a) || (rev == 0x3b)) {
+ u8 tmp;
+ pci_read_config_byte(pdev, 0x53, &tmp);
+ pci_write_config_byte(pdev, 0x53, tmp | (1<<3));
+ }
+ pci_dev_put(p_smbus);
+ }
+ break;