commit fb221b24a314069af26db8c9beb6c843efcafa38
Author: Rene Herman <rene.herman@gmail.com>
Date:   Tue Mar 18 00:02:16 2008 +0100

    USB: VIA VT6212 10us EHCI sleep time select
    
    The VIA VT6212 uses a 1us EHCI sleep time by default which
    hammers the PCI bus bad. Use the 10us spec value instead
    as suggested by Lev A. Melnikovsky.
    
    CC: Lev A. Melnikovsky <melnikovsky@mail.ru>
    Signed-off-by: Rene Herman <rene.herman@gmail.com>

diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 3ba0166..35a6ccb 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -152,6 +152,15 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
 			break;
 		}
 		break;
+	case PCI_VENDOR_ID_VIA:
+		if (pdev->device == 0x3104 && pdev->revision >= 0x60) {
+			u8 tmp;
+
+			/* VT6212: EHCI sleep time 10us (default 1) */
+			pci_read_config_byte(pdev, 0x4b, &tmp);
+			pci_write_config_byte(pdev, 0x4b, tmp | 0x20);
+		}
+		break;
 	}
 
 	ehci_reset(ehci);